Friday, 1 September 2017 - Monthly Climate Summary for Greater Perth - Product code IDCKGC11L0
Greater Perth in August 2017: A wet month
Rainfall in August 2017 was above average for the Greater Perth area, with totals generally between 120 mm and 170 mm, and higher in the hills. Mean maximum temperatures were generally close to normal, while mean minimum temperatures were mostly above average.
This summary includes data from observing sites in or near the Greater Perth “Greater Capital City Statistical Area” (GCCSA) – see the notes.
Above average rainfall
- Rainfall was mostly in the 120 mm to 170 mm range on the islands and the coastal plain, and in the 220 mm to 270 mm range in the hills
- A number of sites in southern Greater Perth had their wettest August in 25 years
- Rain days were generally between 18 and 20; a wet period between the 8th and 20th saw most sites record rainfall on every day
- Wettest day was the 9th with most sites reporting between 40 mm and 60 mm;
Rottnest Island registered its wettest August day in 23 years
Near normal mean maximum temperatures; above average mean minimum temperatures
- Mean maximum temperatures were generally close to normal, and within 0.5 °C of the average
- Days were mostly cool for the first three weeks of August, but temperatures were mild in the low to mid-twenties in the last week of August
- Mean minimum temperatures were mostly 0.5 °C to 1.5 °C above average
- A very cold start to August in terms of overnight temperatures, though nights were mostly cool to mild for the remainder of August
Perth Metro
- Total rainfall was 151.6 mm, its wettest August for four years, since 167.4 mm was recorded in August 2013
- Rain days totalled 18, which was above the August average of 15.8 rain days
- Mean maximum temperature was 18.7 °C, 0.4 °C below average
- A daily maximum temperature of 14.2 °C on the 9th was Perth Metro's coldest August day for 13 years, since 28 August 2004 when 13.3 °C was recorded
- Mean daily minimum temperature was 9.4 °C, which was 1.0 °C above average and the highest in August for three years, since 2014 when a minimum of 10.3 °C was recorded
- A daily minimum of 1.7 °C on the 2nd was the lowest temperature for 12 months, since 1.6 °C was recorded on 1 August 2016
Further information
- Media
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
Extremes Maps Records Summaries Daily observations Important notes the top
| Extremes in August 2017 | |
|---|---|
| Hottest day | 25.7 °C at Mandurah on the 27th |
| Warmest days on average | 19.2 °C at Medina Research Centre |
| Coolest days on average | 15.4 °C at Bickley |
| Coldest day | 10.2 °C at Karnet on the 9th |
| Coldest night | 0.7 °C at Jandakot Aero on the 2nd |
| Coolest nights on average | 7.8 °C at Bickley |
| Warmest nights on average |
12.3 °C at Rottnest Island 11.4 °C at Mandurah |
| Warmest night |
15.7 °C at Rottnest Island on the 8th 15.1 °C at Rottnest Island on the 7th 15.1 °C at Perth Metro on the 14th 15.1 °C at Swanbourne on the 14th 15.1 °C at Rottnest Island on the 30th |
| Warmest on average overall |
15.1 °C at Rottnest Island 14.7 °C at Garden Island HSF 14.7 °C at Mandurah |
| Coolest on average overall | 11.6 °C at Bickley |
| Wettest overall | 278.2 mm at Huntly |
| Driest overall | 113.2 mm at Rottnest Island |
| Wettest day | 71.0 mm at Huntly on the 9th |
| Strongest wind gust | 94 km/h at Ocean Reef on the 9th |
Extremes Maps Records Summaries Daily observations Important notes the top
| Highest August total rainfall for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (mm) |
Most recent higher |
Average for August |
|||
| Medina Research Centre | 169.2 | 170.7 | in 1992 | 115.4 | |
| Jarrahdale | 258.0 | 277.2 | in 1992* | 183.8 | |
| Pinjarra Refinery | 179.7 | 192.0 | in 1992* | 125.7 | |
* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported
Extremes Maps Records Summaries Daily observations Important notes the top
| Summary statistics for August 2017 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for August 2017 |
Diff from average |
Highest for August 2017 |
Mean for August 2017 |
Diff from average |
Lowest for August 2017 |
Total for August 2017 |
Average for August |
Rank of August 2017 |
Fraction of August average |
|||
| Bickley | 15.4 | -0.6 | 22.0 | 28th | 7.8 | +0.2 | 3.4 | 1st | 224.2 | 173.5 | high | 129% |
| Garden Island HSF | 17.8 | -0.4 | 24.4 | 27th | 11.7 | +0.4 | 4.8 | 3rd | 132.6 | 94.9 | v high | 140% |
| Gosnells City | 18.9 | -0.5 | 25.1 | 28th | 10.2 | +1.3 | 3.4 | 1st | 143.5 | 126.4 | average | 114% |
| Jandakot Aero | 18.4 | -0.3 | 25.2 | 28th | 9.0 | +1.9 | 0.7 | 2nd | 169.0 | 127.5 | high | 133% |
| Mandurah | 18.1 | 0.0 | 25.7 | 27th | 11.4 | +0.4 | 5.7 | 2nd | 129.2 | 95.4 | high | 135% |
| Medina Research Centre | 19.2 | +0.3 | 24.9 | 27th | 9.1 | +0.9 | 1.2 | 2nd | 169.2 | 115.4 | v high | 147% |
| Millendon (Swan Valley) | 18.8 | 23.7 | 28th | 8.5 | 1.4 | 2nd | 153.6 | |||||
| Pearce RAAF | 18.7 | +0.3 | 23.9 | 28th | 8.8 | +0.6 | 2.0 | 2nd | 126.0 | 104.8 | high | 120% |
| Perth Airport | 18.8 | +0.2 | 24.6 | 28th | 9.1 | +1.1 | 1.0 | 2nd | 144.6 | 118.1 | high | 122% |
| Perth Metro | 18.7 | -0.4 | 24.4 | 28th | 9.4 | +1.1 | 1.7 | 2nd | 151.6 | 132.9 | high | 114% |
| Rottnest Island | 17.9 | 0.0 | 22.8 | 27th | 12.3 | -0.1 | 8.2 | 1st | 113.2 | 87.1 | high | 130% |
| Swanbourne | 18.3 | -0.6 | 24.4 | 27th | 10.8 | +0.7 | 5.1 | 2nd | 156.2 | 117.8 | v high | 133% |
|
Note:
Observations for “Perth Metro” are taken from the current site at
Mount Lawley (Bureau number 009225).
Comparisons are made against combined data from the current site (which opened in early 1993) and the previous site at Perth Regional Office (009034), which ran from 1876 to early 1992. | ||||||||||||
Extremes Maps Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for August 2017 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
| Bickley | 12.1 | 12.4 | 13.6 | 11.7 | 15.1 | 16.7 | 15.7 | 15.2 | 10.3 | 12.8 | 15.3 | 15.8 | 16.5 | 13.7 | 13.7 | 13.1 | 14.8 | 17.5 | 14.4 | 13.4 | 13.2 | 16.6 | 16.8 | 18.9 | 20.5 | 18.0 | 20.8 | 22.0 | 15.6 | 17.2 | 15.1 |
| Garden Island HSF | 14.2 | 16.5 | 17.6 | 16.2 | 17.9 | 19.0 | 18.3 | 19.1 | 14.2 | 16.2 | 17.3 | 19.1 | 19.7 | 17.2 | 16.4 | 15.8 | 16.8 | 18.6 | 16.4 | 15.3 | 15.6 | 17.6 | 17.5 | 20.9 | 16.9 | 20.5 | 24.4 | 21.3 | 18.1 | 19.0 | 17.7 |
| Gosnells City | 15.2 | 15.2 | 18.0 | 16.0 | 20.5 | 19.5 | 18.4 | 14.5 | 16.3 | 18.3 | 19.8 | 21.0 | 20.0 | 17.5 | 16.9 | 18.5 | 21.0 | 18.0 | 17.0 | 17.5 | 19.7 | 22.4 | 22.1 | 21.0 | 24.1 | 25.1 | 17.8 | ||||
| Jandakot Aero | 15.4 | 14.5 | 18.2 | 15.4 | 18.0 | 19.2 | 18.8 | 18.0 | 14.3 | 15.9 | 17.4 | 19.5 | 20.4 | 17.7 | 16.9 | 16.5 | 17.6 | 19.5 | 17.4 | 16.6 | 16.3 | 18.9 | 19.6 | 22.0 | 20.7 | 20.5 | 24.3 | 25.2 | 17.6 | 19.6 | 18.7 |
| Karnet | 12.0 | 13.0 | 16.3 | 16.3 | 15.6 | 10.2 | 13.0 | 16.0 | 17.0 | 14.4 | 13.6 | 14.0 | 13.6 | 16.0 | 16.3 | 21.2 | 22.1 | 18.0 | |||||||||||||
| Mandurah | 14.7 | 16.0 | 16.5 | 15.8 | 18.1 | 18.2 | 17.9 | 18.1 | 14.3 | 16.0 | 16.8 | 18.1 | 18.4 | 17.1 | 16.8 | 15.4 | 15.7 | 16.7 | 17.4 | 16.8 | 16.1 | 18.6 | 19.2 | 21.4 | 19.9 | 21.6 | 25.7 | 25.6 | 20.1 | 19.3 | 17.9 |
| Medina Research Centre | 15.9 | 14.9 | 19.0 | 17.0 | 20.0 | 19.8 | 18.7 | 19.4 | 14.8 | 17.2 | 18.0 | 20.0 | 20.5 | 18.8 | 17.0 | 19.2 | 19.5 | 18.5 | 17.4 | 18.0 | 18.7 | 19.7 | 22.2 | 21.0 | 22.0 | 24.9 | 24.1 | 20.4 | 19.7 | ||
| Millendon (Swan Valley) | 14.9 | 15.4 | 18.3 | 15.2 | 18.9 | 19.5 | 18.1 | 19.4 | 14.3 | 16.3 | 18.5 | 20.0 | 20.1 | 17.8 | 17.1 | 16.8 | 18.0 | 20.1 | 17.8 | 17.3 | 17.3 | 19.7 | 19.4 | 21.6 | 22.1 | 20.4 | 23.3 | 23.7 | 20.8 | 20.3 | 19.1 |
| Pearce RAAF | 14.8 | 15.7 | 18.3 | 15.0 | 19.3 | 19.3 | 18.9 | 19.3 | 14.3 | 16.2 | 19.2 | 19.0 | 20.3 | 17.8 | 16.8 | 16.1 | 17.9 | 20.3 | 17.6 | 16.7 | 18.0 | 19.1 | 19.2 | 21.3 | 21.8 | 19.6 | 23.8 | 23.9 | 21.5 | 20.1 | 19.2 |
| Perth Airport | 15.3 | 14.9 | 17.9 | 15.5 | 18.3 | 19.8 | 19.4 | 19.2 | 14.7 | 16.1 | 18.1 | 19.9 | 20.7 | 18.0 | 17.3 | 16.8 | 18.2 | 20.5 | 17.2 | 16.9 | 17.6 | 19.2 | 19.7 | 22.0 | 21.8 | 21.2 | 23.8 | 24.6 | 18.6 | 19.8 | 18.3 |
| Perth Metro | 15.1 | 14.8 | 18.5 | 15.7 | 18.6 | 19.7 | 18.8 | 18.4 | 14.2 | 16.7 | 18.3 | 20.2 | 20.3 | 18.4 | 17.4 | 16.6 | 18.2 | 20.7 | 18.0 | 16.9 | 17.0 | 18.5 | 19.3 | 22.3 | 21.0 | 20.8 | 24.2 | 24.4 | 18.5 | 20.1 | 18.8 |
| Rottnest Island | 14.6 | 14.8 | 18.1 | 16.1 | 18.2 | 19.3 | 19.1 | 20.2 | 14.6 | 16.3 | 17.6 | 19.4 | 19.4 | 17.4 | 16.8 | 16.6 | 17.9 | 18.9 | 17.3 | 16.0 | 17.5 | 17.7 | 17.3 | 19.4 | 17.3 | 19.4 | 22.8 | 19.7 | 17.8 | 19.6 | 17.9 |
| Swanbourne | 15.2 | 14.2 | 18.1 | 16.2 | 18.7 | 19.3 | 18.1 | 18.2 | 14.6 | 16.8 | 18.2 | 19.4 | 20.0 | 17.9 | 17.1 | 16.6 | 17.1 | 20.1 | 17.9 | 17.0 | 15.9 | 18.2 | 19.3 | 22.1 | 18.2 | 20.7 | 24.4 | 23.4 | 17.5 | 19.8 | 18.5 |
|
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated, and typically occurred in the afternoon of that day. | |||||||||||||||||||||||||||||||
| Temperatures coloured according to their difference from the long-term average for the period |
-10.0 | -9.0 | -8.0 | -7.0 | -6.0 | -5.0 | -4.0 | -3.0 | -2.0 | -1.0 | 0.0 | +1.0 | +2.0 | +3.0 | +4.0 | +5.0 | +6.0 | +7.0 | +8.0 | +9.0 | +10.0 | °C | Grey outline marks highest and lowest for the period |
||||||||
| Daily minimum temperatures for August 2017 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
| Bickley | 3.4 | 3.5 | 4.0 | 5.6 | 7.8 | 7.6 | 9.7 | 11.2 | 6.2 | 4.1 | 6.3 | 10.8 | 11.6 | 12.0 | 7.5 | 8.2 | 4.9 | 6.6 | 8.0 | 8.1 | 6.9 | 8.2 | 8.7 | 6.7 | 7.3 | 8.3 | 9.6 | 9.0 | 11.0 | 10.8 | 9.6 |
| Garden Island HSF | 8.7 | 7.5 | 4.8 | 10.5 | 12.0 | 11.0 | 14.2 | 14.5 | 9.9 | 9.9 | 11.1 | 14.2 | 15.4 | 15.0 | 12.3 | 12.9 | 9.9 | 11.3 | 11.0 | 11.7 | 11.7 | 10.9 | 10.7 | 11.0 | 11.6 | 12.3 | 13.6 | 13.0 | 11.9 | 13.2 | 14.5 |
| Gosnells City | 3.4 | 3.6 | 4.5 | 8.5 | 10.9 | 7.6 | 11.8 | 13.8 | 9.1 | 6.5 | 9.8 | 13.8 | 13.9 | 14.0 | 11.0 | 10.9 | 5.7 | 9.6 | 10.5 | 9.0 | 7.5 | 11.0 | 10.8 | 11.2 | 11.7 | 13.9 | 14.0 | 14.4 | 12.7 | ||
| Jandakot Aero | 2.0 | 0.7 | 2.7 | 8.1 | 10.5 | 6.4 | 10.3 | 12.9 | 8.6 | 5.3 | 8.9 | 13.6 | 14.3 | 14.7 | 11.1 | 11.6 | 5.0 | 8.1 | 10.2 | 9.3 | 8.0 | 10.6 | 7.0 | 7.5 | 9.3 | 7.6 | 13.1 | 11.4 | 10.3 | 10.3 | 9.8 |
| Karnet | 4.9 | 2.0 | 5.6 | 9.5 | 11.4 | 6.6 | 3.0 | 6.1 | 12.0 | 11.6 | 8.4 | 8.2 | 7.4 | 7.0 | 5.6 | 7.4 | 7.0 | 10.2 | 9.1 | 9.7 | |||||||||||
| Mandurah | 7.3 | 5.7 | 8.3 | 10.1 | 12.1 | 12.1 | 14.2 | 14.3 | 9.9 | 8.0 | 9.9 | 13.1 | 14.6 | 14.2 | 12.0 | 12.1 | 8.3 | 10.0 | 10.2 | 11.4 | 11.8 | 11.2 | 10.6 | 10.2 | 10.4 | 12.4 | 13.2 | 12.7 | 12.9 | 14.2 | 14.6 |
| Medina Research Centre | 3.2 | 1.2 | 2.7 | 8.3 | 11.0 | 9.0 | 9.7 | 13.0 | 8.3 | 5.6 | 9.4 | 13.5 | 14.0 | 14.4 | 11.2 | 5.3 | 9.7 | 10.0 | 9.5 | 10.6 | 11.0 | 7.4 | 7.9 | 8.0 | 9.5 | 11.0 | 11.7 | 9.4 | 9.4 | 9.2 | |
| Millendon (Swan Valley) | 2.3 | 1.4 | 2.7 | 7.6 | 8.7 | 5.7 | 8.2 | 10.6 | 8.3 | 5.4 | 6.3 | 13.1 | 12.9 | 13.6 | 10.6 | 9.3 | 4.1 | 7.4 | 9.7 | 8.7 | 5.2 | 7.8 | 6.9 | 8.4 | 8.4 | 10.2 | 11.6 | 12.9 | 12.4 | 11.7 | 10.0 |
| Pearce RAAF | 2.7 | 2.0 | 3.6 | 7.8 | 9.9 | 5.6 | 8.6 | 11.9 | 8.6 | 5.8 | 6.3 | 13.2 | 13.1 | 13.7 | 10.0 | 9.9 | 5.6 | 7.5 | 9.9 | 9.0 | 5.5 | 7.8 | 6.3 | 9.7 | 10.7 | 8.6 | 12.5 | 13.2 | 13.2 | 11.2 | 10.3 |
| Perth Airport | 1.8 | 1.0 | 3.6 | 7.9 | 9.3 | 6.7 | 10.6 | 12.5 | 8.5 | 5.3 | 7.5 | 13.2 | 13.1 | 14.6 | 11.4 | 10.8 | 5.0 | 7.0 | 9.7 | 9.2 | 5.8 | 9.9 | 10.3 | 9.3 | 8.9 | 10.2 | 12.2 | 12.8 | 11.0 | 12.0 | 10.1 |
| Perth Metro | 4.2 | 1.7 | 4.4 | 8.6 | 11.0 | 7.4 | 10.0 | 13.3 | 8.9 | 6.1 | 8.9 | 13.6 | 14.2 | 15.1 | 11.6 | 11.7 | 6.5 | 8.9 | 10.0 | 10.3 | 6.6 | 9.8 | 8.5 | 8.1 | 7.5 | 9.3 | 12.2 | 12.6 | 11.0 | 10.5 | 9.9 |
| Rottnest Island | 8.2 | 8.9 | 9.8 | 10.2 | 12.6 | 13.6 | 15.1 | 15.7 | 9.7 | 9.9 | 12.0 | 13.5 | 14.6 | 14.0 | 9.9 | 11.4 | 11.2 | 12.1 | 11.4 | 12.3 | 12.9 | 12.4 | 11.7 | 11.7 | 12.9 | 13.3 | 13.8 | 13.8 | 14.3 | 15.1 | 14.0 |
| Swanbourne | 6.4 | 5.1 | 6.3 | 9.2 | 11.4 | 9.1 | 13.6 | 14.3 | 9.0 | 7.4 | 10.1 | 14.1 | 14.3 | 15.1 | 11.9 | 12.0 | 7.3 | 9.2 | 10.1 | 11.0 | 10.2 | 11.0 | 9.9 | 9.8 | 9.6 | 11.1 | 13.0 | 12.8 | 13.1 | 12.8 | 13.9 |
|
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated, and typically occurred that morning. | |||||||||||||||||||||||||||||||
| Temperatures coloured according to their difference from the long-term average for the period |
-10.0 | -9.0 | -8.0 | -7.0 | -6.0 | -5.0 | -4.0 | -3.0 | -2.0 | -1.0 | 0.0 | +1.0 | +2.0 | +3.0 | +4.0 | +5.0 | +6.0 | +7.0 | +8.0 | +9.0 | +10.0 | °C | Grey outline marks highest and lowest for the period |
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| Daily rainfall for August 2017 | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | ||
| Anketell | 29.2 | - | - | 4.8 | 0.4 | - | - | 2.0 | 61.2 | 12.2 | 0.6 | 20.8 | 7.8 | 11.8 | 9.4 | 3.4 | 1.8 | 2.2 | 9.2 | 4.8 | - | - | - | - | - | - | - | - | - | 0.6 | 1.6 | |
| Bickley | 32.2 | - | 0.6 | 6.8 | 0.8 | - | - | 0.4 | 55.4 | 12.8 | - | 30.2 | 7.4 | 24.8 | 31.8 | 4.8 | 0.6 | - | 9.2 | 0.6 | - | 0.4 | 0.2 | - | - | - | - | - | - | 1.6 | 3.6 | |
| Bungendore | 29.0 | 0.2 | 1.2 | 6.4 | 0.2 | - | - | 1.6 | 46.2 | 10.4 | 0.2 | 29.2 | 6.0 | 12.2 | 14.0 | 4.2 | 2.2 | 1.4 | 8.2 | 1.6 | - | 0.4 | 0.2 | - | - | - | 0.2 | - | - | 1.0 | 2.6 | |
| Chidlow | 25.8 | - | - | 1.8 | 0.4 | - | - | - | 40.4 | 10.2 | - | 21.6 | → | 24.6 | 16.8 | 4.6 | - | - | 5.0 | → | 4.2 | - | - | - | - | - | - | - | 0.4 | 0.4 | 5.2 | |
| Garden Island HSF | 21.0 | - | 0.4 | 2.0 | - | - | 0.2 | 4.4 | 42.0 | 4.2 | - | 18.0 | 1.2 | 8.4 | 3.4 | 3.6 | 7.2 | 3.4 | 6.4 | 3.4 | 0.4 | 0.2 | - | - | - | - | - | - | - | - | 2.8 | |
| Gosnells City | 22.4 | 0.2 | 0.6 | 5.0 | 0.4 | - | - | 0.6 | 41.8 | 8.6 | 0.2 | → | → | 5.0 | 7.0 | 4.6 | 0.8 | 0.4 | - | - | - | - | - | - | - | - | - | - | - | 13.4 | ||
| Halls Head | 16.2 | - | - | - | - | - | 7.0 | 9.0 | 30.0 | 6.0 | 3.1 | 11.4 | 8.4 | 9.4 | 4.0 | 3.0 | 3.0 | 5.6 | 9.4 | 0.8 | 0.6 | |||||||||||
| Huntly | 49.0 | - | 1.3 | 9.6 | 0.1 | 0.2 | 1.2 | 12.0 | 71.0 | 10.2 | 1.8 | 26.0 | 19.4 | 30.4 | 17.8 | 5.2 | 3.2 | 8.0 | 5.7 | 0.3 | - | 0.4 | 0.2 | - | - | - | - | - | - | - | 5.2 | |
| Jandakot Aero | 22.0 | 1.2 | 5.2 | 1.0 | - | - | 4.6 | 50.6 | 9.0 | - | 23.0 | 6.4 | 9.8 | 10.0 | 3.4 | 0.8 | 1.0 | 8.0 | 2.2 | - | 0.6 | - | - | - | - | - | - | - | 5.0 | 5.2 | ||
| Jarrahdale | 34.8 | 0.2 | 1.8 | 6.8 | 0.2 | - | 0.2 | 3.6 | 59.2 | 11.8 | 1.0 | 44.6 | 22.8 | 20.6 | 15.4 | 3.8 | 3.2 | 1.6 | 9.2 | 6.8 | - | 0.2 | 0.2 | 0.4 | - | - | 0.2 | 0.2 | - | 0.4 | 8.8 | |
| Karnet | 32.4 | 2.4 | 7.8 | → | → | 0.3 | 6.4 | 39.4 | 8.0 | - | → | 22.6 | 34.0 | 8.2 | 4.8 | → | → | → | 2.4 | - | 0.3 | - | - | - | - | - | - | - | 0.3 | |||
| Karragullen North | 33.4 | - | - | 7.4 | 0.3 | - | - | 1.6 | 49.0 | 14.2 | - | 30.2 | 13.0 | 12.6 | 13.8 | 10.0 | 0.4 | - | 8.4 | 1.6 | - | 0.4 | - | - | - | - | - | - | - | 2.0 | 3.6 | |
| Maida Vale | 20.8 | 0.4 | 0.8 | 4.8 | 1.0 | - | - | 0.4 | 46.2 | 6.4 | - | 20.8 | 5.4 | 12.8 | 11.2 | 7.6 | 2.2 | - | 11.4 | 0.4 | - | 0.4 | - | - | - | - | - | - | - | 0.2 | 1.8 | |
| Mandurah | 14.8 | - | 1.0 | 1.8 | - | - | - | 13.4 | 38.4 | 4.6 | 0.6 | 7.2 | 6.6 | 10.8 | 4.0 | 3.0 | 3.0 | 6.6 | 9.4 | 0.8 | 0.6 | 1.0 | - | - | - | - | - | - | - | - | 1.6 | |
| Medina Research Centre | 24.8 | - | 1.0 | 2.8 | 0.6 | 0.1 | 0.2 | 4.4 | 49.8 | 8.6 | 3.0 | 16.8 | 12.8 | 11.2 | 5.8 | → | 7.4 | 0.6 | 14.0 | 1.6 | 0.2 | - | - | - | - | - | - | - | 0.1 | 0.4 | 3.0 | |
| Midland | 24.2 | 0.2 | 0.2 | - | → | → | 1.2 | - | 49.4 | 10.8 | - | → | → | 51.2 | 10.0 | 4.4 | - | - | → | → | 4.6 | - | - | - | - | - | - | - | - | 2.2 | 6.2 | |
| Millendon (Swan Valley) | 30.6 | - | 0.2 | 2.4 | 0.4 | 0.2 | - | - | 41.0 | 11.6 | - | 17.6 | 6.8 | 17.0 | 12.4 | 6.0 | 0.4 | - | 5.6 | 0.4 | - | - | - | - | - | - | - | - | - | 0.6 | 0.4 | |
| Mount Helena | 35.7 | 0.4 | 3.2 | 0.4 | 49.0 | 11.4 | 24.0 | 6.4 | 17.0 | 22.6 | 4.2 | 0.4 | 5.4 | 1.4 | 3.0 | |||||||||||||||||
| Mount Solus | 27.2 | 0.2 | 1.2 | 1.8 | - | 0.2 | - | 3.6 | 43.6 | 10.6 | 0.6 | 41.4 | 21.0 | 26.4 | 16.6 | 5.2 | 2.0 | 1.0 | 7.8 | 0.4 | - | 0.4 | 0.2 | - | 0.2 | - | - | 0.2 | - | 0.2 | 4.2 | |
| Muchea | 20.6 | 0.2 | - | 1.6 | - | - | - | - | 57.4 | 6.4 | 0.2 | 17.2 | 9.8 | 14.2 | 11.8 | 6.8 | 0.8 | - | 4.2 | 0.8 | - | 0.6 | - | - | - | - | - | - | - | 0.2 | 1.6 | |
| Mundaring | 34.8 | - | 0.6 | 5.8 | 0.6 | 0.2 | - | - | 57.8 | 10.2 | - | 28.4 | 21.0 | 24.8 | 22.2 | 5.0 | 4.0 | - | 5.4 | 3.8 | - | 0.4 | - | - | - | - | - | - | 0.2 | 0.2 | 3.0 | |
| Noble Falls | 29.0 | 0.8 | 3.0 | 0.8 | 42.0 | 12.6 | 21.0 | 10.0 | 22.0 | 18.0 | 4.0 | 0.4 | 5.8 | 0.4 | 0.2 | 1.0 | 1.4 | |||||||||||||||
| Pearce RAAF | 26.4 | - | - | 1.8 | - | - | - | - | 40.0 | 4.0 | 0.2 | 13.4 | 4.2 | 12.0 | 9.2 | 6.4 | 0.2 | - | 7.8 | - | - | 0.2 | - | - | - | - | - | - | - | - | 0.2 | |
| Perth Airport | 23.6 | - | - | 1.8 | 0.2 | - | - | 0.2 | 41.4 | 6.4 | 0.2 | 19.8 | 5.6 | 10.2 | 11.8 | 5.2 | 1.2 | 0.2 | 10.0 | 1.6 | 0.2 | 0.8 | - | - | - | - | - | - | - | - | 4.2 | |
| Perth Metro | 27.4 | - | 0.4 | 2.6 | 0.8 | - | - | 0.2 | 47.2 | 9.2 | - | 19.8 | 2.2 | 6.6 | 8.4 | 5.4 | 1.0 | - | 11.0 | 2.8 | - | 0.6 | - | - | - | - | - | - | - | 1.4 | 4.6 | |
| Pickering Brook | 33.8 | 0.4 | 6.0 | 1.2 | 0.8 | 47.4 | 13.6 | 24.6 | 10.0 | 11.4 | 17.5 | 8.0 | 0.4 | 8.2 | 1.4 | 0.6 | 3.6 | 5.8 | ||||||||||||||
| Pinjarra Refinery | 18.2 | 0.1 | 1.0 | 5.6 | - | - | 0.4 | 20.0 | 42.2 | 11.0 | 1.0 | 15.0 | 14.2 | 14.0 | 8.6 | 3.8 | 3.8 | 12.2 | 5.8 | 0.3 | 0.2 | - | - | - | - | - | - | - | - | - | 2.3 | |
| Pinjarra South | 22.6 | - | 0.8 | 3.6 | - | - | 0.4 | 14.8 | 33.0 | 7.4 | 0.6 | 11.4 | 12.2 | 7.6 | 7.4 | 4.0 | 3.0 | 8.4 | 5.2 | - | - | - | - | - | - | - | - | - | - | - | 2.6 | |
| Roleystone | 26.8 | - | 0.8 | 7.8 | - | - | - | 1.6 | 42.4 | 13.4 | - | 23.2 | 13.4 | 10.8 | 17.8 | 9.8 | 0.8 | - | 8.6 | 1.4 | - | 0.8 | - | - | - | - | - | - | - | 5.4 | 3.4 | |
| Rottnest Island | 17.0 | - | 2.2 | 3.0 | - | - | - | 5.6 | 34.6 | 1.6 | 0.6 | 10.6 | 1.0 | 8.2 | 2.4 | 4.6 | 1.6 | 2.6 | 9.6 | 0.6 | - | 1.6 | 1.8 | - | - | - | - | - | 0.2 | 0.2 | 3.6 | |
| Serpentine | 27.6 | - | 0.8 | 5.0 | - | - | - | 2.0 | 48.2 | 9.4 | 0.2 | 38.6 | 19.4 | 11.2 | 8.6 | 2.8 | 3.4 | 1.2 | 10.4 | 0.8 | - | - | - | - | - | - | - | - | - | - | 5.0 | |
| Swanbourne | 22.0 | - | 2.8 | 3.0 | 0.2 | - | - | 1.6 | 46.4 | 7.8 | 0.2 | 19.2 | 3.0 | 6.6 | 4.0 | 3.8 | 4.6 | 2.0 | 16.4 | 0.2 | - | 1.4 | - | - | - | - | - | - | - | 9.2 | 1.8 | |
| Wanneroo | 24.5 | - | - | - | → | → | 0.8 | 0.4 | 40.6 | 2.4 | - | → | → | 44.4 | 6.0 | 6.0 | 2.0 | - | → | → | 20.0 | 1.4 | - | - | - | - | - | - | 0.3 | 0.2 | 1.6 | |
| Whiteman Park | 29.2 | - | 0.8 | 5.2 | - | - | - | - | 49.8 | 12.0 | - | 25.6 | 7.6 | 14.2 | 14.4 | 5.6 | - | - | - | - | - | 7.4 | - | - | - | - | - | - | - | 4.4 | 4.4 | |
|
Most values are the precipitation in the 24 hours to 9 am on the day indicated.
Days marked with → are part of a longer accumulation, which is shown on the final day. Values over 100 mm have been rounded to the nearest whole millimetre. Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell). | ||||||||||||||||||||||||||||||||
| Rainfalls coloured according to the amount |
0 | 1.0 | 5.0 | 10.0 | 15.0 | 25.0 | 50.0 | 100 | 150 | 200 | 300 | 400 | 600 | millimetres | ||||||||||||||||||
Extremes Maps Records Summaries Daily observations Important notes the top
Notes
The Monthly climate summary, generally published on the first working day of each month, lists the main features of the weather in Greater Perth using the most timely and accurate information available on the date of publication; it will generally not be updated. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.
In September 2017 this summary was broadened to include data from observing sites in or near the Greater Perth “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to “include the population within the urban area of the city, as well as people who regularly socialise, shop or work within the city, and live in small towns and rural areas surrounding the city. It is important to note that GCCSAs do not define the built up edge of the city. They provide a stable definition for these cities and are designed for the output of a range of social and economic survey data.”
This statement has been prepared based on information available at 9 am on Friday 1 September 2017. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.
Averages for individual sites are long-term means based on observations from
all available years of record, which vary widely from site to site.
They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median
is sometimes more representative than the
mean
of long-term average rain.
The Rank indicates how rainfall this time compares with the climate record for the site,
based on the
decile ranking
(very low rainfall is in decile 1, low in decile 2 or 3,
average in decile 4 to 7, high in decile 8 or 9
and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a
percentage of the long-term mean.
Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.
Further information
- Media
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
