Friday, 1 June 2018 - Monthly Climate Summary for Greater Perth - Product code IDCKGC11L0
Greater Perth in May 2018: Warm days before rain in late May
May rainfall was slightly below average for most Perth sites with most of the rain falling towards the end of month. Mean maximum temperatures were very much above average, while the mean minimum temperatures were generally below average for the Perth coastal plain sites.
Near average to below average rainfall
- Monthly rainfall totals were between 50 mm and 80 mm for coastal plain sites, and 120 mm -150 mm in the hills
- A strong cold front and associated deep low produced four consecutive wet days with moderate to heavy falls between the 24th and 28th; the wettest day of the month being the 25th or 26th
- Bickley recorded a daily rainfall of 67.0 mm on the 26th, which was its wettest May day for thirteen years, since a daily total of 72.0 mm was recorded on 19 May 2005
Above average mean maximum temperatures; Below average mean minimum temperatures for costal plain sites
- Mean maximum temperatures were mostly 1 °C to 3 °C above average across the Perth area
- Rottnest Island had its warmest May on record; Pearce RAAF had its warmest May for 46 years
- Days were persistently warm in the middle of the month, as Perth Metro, Perth Airport and Pearce RAAF all recorded 16 consecutive days with maxima 24 °C or higher between the 9th and 24th.The previous record for such a spell at Perth Airport was 12 days between 18 and 29 May 1972, whilst the Perth city had 11 consecutive days of 24 °C between 1 and 11 May 1962
- Mean minimum temperatures were mostly below average for the coastal plain sites and in the hills
- Pearce RAAF recorded a minimum temperature of 19.3 °C on the 12th, which was its warmest morning in May for fifteen years when a minimum of 20.3 °C was recorded on 1 May 2003
Perth Metro
- Total rainfall for Perth Metro was 67.4 mm, and was Perth Metro's driest May since 2012, when a total of 49.0 mm was recorded
- The mean maximum temperature for Perth Metro was 23.9 °C, which was its warmest May for nine years when a mean of 24.4 °C was recorded on May 2009 (Perth Metro's warmest May on record)
- A daily maximum temperature of 32.7 °C on the 12th was the highest temperature in May for 15 years when a maximum of 32.7 °C was recorded on 1 May 2003. It was also the highest temperature recorded so late in May for the Perth city. The previous latest date in May with temperature of 32 °C in the city was 3 May in 1907 (32.2 °C)
- The mean minimum temperature for Perth Metro was 10.0 °C, which was cooler than last two years but warmer than 2014
- The coldest morning was 5.1 °C on the 20th, and the warmest morning was on the 12th when the minimum temperature was 15.2 °C
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 May 2018 | |
|---|---|
| Hottest day | 34.1 °C at Pearce RAAF on the 12th |
| Warmest days on average | 24.6 °C at Pearce RAAF |
| Coolest days on average | 20.5 °C at Bickley |
| Coldest day | 14.5 °C at Bickley on the 26th |
| Coldest night | 3.1 °C at Pearce RAAF on the 4th |
| Coolest nights on average | 9.4 °C at Jandakot Aero |
| Warmest nights on average |
15.7 °C at Rottnest Island 13.6 °C at Mandurah |
| Warmest night | 19.3 °C at Pearce RAAF on the 12th |
| Warmest on average overall |
19.1 °C at Rottnest Island 18.3 °C at Swanbourne |
| Coolest on average overall | 15.2 °C at Bickley |
| Wettest overall | 151.6 mm at Bickley |
| Wettest day | 67.0 mm at Bickley on the 26th |
| Strongest wind gust | 104 km/h at Ocean Reef on the 25th |
Extremes Maps Records Summaries Daily observations Important notes the top
| Record highest May mean daily maximum temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for May |
||
| Rottnest Island | 22.6 | 22.5 | in 2009 | 28 | 21.1 |
| Highest May mean daily maximum temperature for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (°C) |
Most recent higher |
Average for May |
|||
| Pearce RAAF | 24.6 | 24.9 | in 1972 | 22.0 | |
Extremes Maps Records Summaries Daily observations Important notes the top
| Summary statistics for May 2018 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for May 2018 |
Diff from average |
Highest for May 2018 |
Mean for May 2018 |
Diff from average |
Lowest for May 2018 |
Total for May 2018 |
Average for May |
Rank of May 2018 |
Fraction of May average |
|||
| Bickley | 20.5 | +1.2 | 29.6 | 12th | 9.8 | -0.4 | 6.7 | 4th | 151.6 | 131.9 | high | 115% |
| Garden Island HSF | 23.0 | +1.7 | 29.3 | 12th | 14.1 | +0.1 | 10.6 | 4th | 44.4 | 75.4 | low | 59% |
| Jandakot Aero | 23.7 | +1.7 | 31.5 | 12th | 9.4 | 0.0 | 4.9 | 20th | 81.0 | 106.6 | average | 76% |
| Mandurah | 22.3 | +1.2 | 28.0 | 11th | 13.6 | +0.1 | 9.9 | 4th | 66.0 | 90.6 | average | 73% |
| Millendon (Swan Valley) | 24.3 | 34.0 | 12th | 9.5 | 3.6 | 20th | 71.0 | |||||
| Pearce RAAF | 24.6 | +2.6 | 34.1 | 12th | 10.2 | -0.5 | 3.1 | 4th | 62.2 | 83.9 | average | 74% |
| Perth Airport | 24.2 | +2.4 | 33.1 | 12th | 10.3 | -0.1 | 4.9 | 4th | 72.2 | 98.5 | average | 73% |
| Perth Metro | 23.9 | +1.6 | 32.7 | 12th | 10.0 | -0.5 | 5.1 | 20th | 67.4 | 89.4 | low | 75% |
| Rottnest Island | 22.6 | +1.5 | 27.3 | 23rd | 15.7 | +0.5 | 12.5 | 25th | 54.2 | 74.0 | average | 73% |
| Swanbourne | 23.6 | +1.4 | 30.4 | 12th | 13.0 | +0.4 | 8.8 | 30th | 70.4 | 90.7 | low | 78% |
Extremes Maps Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for May 2018 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 17.8 | 16.1 | 17.6 | 18.8 | 25.1 | 17.6 | 18.7 | 19.1 | 20.3 | 20.5 | 25.5 | 29.6 | 24.1 | 22.6 | 23.5 | 22.9 | 21.9 | 21.1 | 21.5 | 21.6 | 22.1 | 24.1 | 24.6 | 23.8 | 14.9 | 14.5 | 17.3 | 15.3 | 18.2 | 18.7 | 16.6 |
| Garden Island HSF | 18.8 | 18.8 | 18.9 | 21.0 | 27.8 | 21.8 | 20.0 | 19.8 | 24.5 | 24.8 | 27.9 | 29.3 | 21.8 | 26.3 | 26.6 | 24.3 | 25.2 | 24.4 | 23.5 | 23.6 | 24.4 | 25.4 | 27.6 | 26.5 | 19.0 | 19.5 | 20.8 | 18.1 | 20.3 | 22.0 | 20.5 |
| Gosnells City | 20.8 | 22.5 | 22.8 | 29.5 | 21.2 | 21.7 | 24.7 | 24.5 | 30.2 | 33.5 | 26.0 | 26.5 | 26.0 | 24.0 | 24.5 | 25.5 | 15.9 | 18.0 | 20.7 | 18.4 | 21.1 | 22.5 | 18.0 | ||||||||
| Jandakot Aero | 20.8 | 19.4 | 20.7 | 21.9 | 28.7 | 21.3 | 20.5 | 22.3 | 24.4 | 24.3 | 28.7 | 31.5 | 25.5 | 26.3 | 27.1 | 25.8 | 24.8 | 24.4 | 23.4 | 23.8 | 25.1 | 27.5 | 27.9 | 27.3 | 18.8 | 19.1 | 21.4 | 18.2 | 22.7 | 17.6 | |
| Karnet | 18.0 | 18.5 | 18.0 | 19.5 | 25.6 | 17.9 | 18.5 | 19.6 | 26.0 | 24.0 | 24.3 | 23.0 | 22.5 | 23.5 | 25.1 | 19.6 | |||||||||||||||
| Mandurah | 19.7 | 19.2 | 19.8 | 20.6 | 23.8 | 21.1 | 20.4 | 20.9 | 24.5 | 25.3 | 28.0 | 24.7 | 23.7 | 25.7 | 25.7 | 23.4 | 24.7 | 24.6 | 22.9 | 23.1 | 23.0 | 23.3 | 23.8 | 24.3 | 18.5 | 19.0 | 20.4 | 18.3 | 19.4 | 21.1 | 19.9 |
| Millendon (Swan Valley) | 21.4 | 19.6 | 20.9 | 22.3 | 29.3 | 22.4 | 22.7 | 22.5 | 25.3 | 25.1 | 29.7 | 34.0 | 26.4 | 26.8 | 27.3 | 26.4 | 25.1 | 24.6 | 24.6 | 24.9 | 26.0 | 28.0 | 28.5 | 28.0 | 18.2 | 18.7 | 21.4 | 18.2 | 21.6 | 22.1 | 20.4 |
| Pearce RAAF | 21.5 | 20.3 | 21.3 | 22.5 | 30.0 | 22.6 | 22.7 | 22.9 | 25.6 | 25.1 | 29.9 | 34.1 | 26.6 | 27.0 | 27.6 | 26.4 | 25.1 | 24.5 | 24.3 | 24.9 | 26.0 | 28.1 | 29.1 | 28.3 | 19.6 | 19.4 | 20.8 | 19.3 | 22.0 | 23.2 | 22.6 |
| Perth Airport | 21.3 | 20.3 | 21.3 | 22.1 | 29.4 | 22.1 | 22.2 | 22.7 | 24.8 | 24.7 | 29.5 | 33.1 | 26.3 | 26.2 | 27.3 | 26.3 | 25.1 | 24.4 | 24.3 | 24.9 | 25.7 | 28.0 | 28.4 | 27.7 | 20.6 | 18.8 | 21.0 | 18.3 | 21.5 | 22.9 | 19.5 |
| Perth Metro | 21.1 | 19.2 | 20.9 | 22.1 | 28.8 | 21.7 | 21.5 | 22.5 | 24.6 | 24.4 | 28.9 | 32.7 | 25.3 | 26.1 | 27.0 | 26.3 | 24.9 | 24.3 | 24.3 | 24.6 | 25.4 | 28.1 | 28.6 | 27.4 | 18.8 | 19.3 | 21.3 | 17.2 | 21.2 | 22.3 | 19.1 |
| Rottnest Island | 19.8 | 19.9 | 19.6 | 20.8 | 26.6 | 21.9 | 19.7 | 20.0 | 22.3 | 23.2 | 27.3 | 27.3 | 22.0 | 25.0 | 26.0 | 24.6 | 24.0 | 23.5 | 22.0 | 22.8 | 26.2 | 27.3 | 25.4 | 18.5 | 19.0 | 20.9 | 18.9 | 20.3 | 22.2 | 20.9 | |
| Swanbourne | 20.2 | 19.3 | 20.0 | 21.6 | 28.9 | 22.1 | 20.6 | 20.8 | 24.2 | 24.3 | 29.2 | 30.4 | 23.3 | 26.2 | 27.5 | 26.1 | 25.3 | 24.2 | 24.1 | 24.1 | 25.8 | 27.3 | 28.1 | 26.8 | 19.6 | 19.6 | 21.6 | 18.0 | 20.4 | 22.8 | 19.0 |
|
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 May 2018 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 10.0 | 9.0 | 7.6 | 6.7 | 7.8 | 12.6 | 8.8 | 9.1 | 9.7 | 10.7 | 11.5 | 13.5 | 15.4 | 12.6 | 10.0 | 10.8 | 9.2 | 8.4 | 8.3 | 8.7 | 9.3 | 8.8 | 9.7 | 11.8 | 10.6 | 10.3 | 11.6 | 7.8 | 8.1 | 6.9 | 9.8 |
| Garden Island HSF | 15.5 | 15.4 | 13.3 | 10.6 | 12.3 | 18.2 | 13.2 | 13.4 | 13.2 | 15.4 | 17.0 | 16.5 | 14.5 | 16.0 | 15.3 | 14.5 | 13.2 | 13.9 | 13.6 | 11.2 | 12.7 | 15.7 | 14.3 | 12.9 | 14.5 | 14.1 | 15.2 | 13.1 | 12.3 | 11.1 | 15.4 |
| Gosnells City | 12.0 | 11.8 | 8.0 | 8.9 | 16.1 | 9.2 | 10.0 | 11.9 | 17.0 | 19.0 | 13.7 | 15.0 | 15.2 | 9.2 | 13.4 | 10.0 | 13.0 | 13.0 | 13.0 | 8.5 | 8.0 | 8.5 | 12.0 | ||||||||
| Jandakot Aero | 9.7 | 9.3 | 6.7 | 5.5 | 6.6 | 15.1 | 6.1 | 6.5 | 8.9 | 14.8 | 15.4 | 15.0 | 11.1 | 11.9 | 15.1 | 10.0 | 7.3 | 8.4 | 6.1 | 4.9 | 5.6 | 6.8 | 6.8 | 7.7 | 12.6 | 13.4 | 14.6 | 7.6 | 5.8 | 8.0 | |
| Karnet | 8.9 | 8.0 | 8.5 | 10.0 | 11.0 | 7.6 | 8.0 | 15.0 | 10.5 | 9.0 | 5.0 | 10.0 | 8.5 | 8.2 | 10.5 | 10.5 | 7.7 | 8.1 | |||||||||||||
| Mandurah | 14.9 | 13.2 | 12.3 | 9.9 | 11.2 | 17.8 | 11.7 | 11.6 | 12.1 | 14.4 | 16.4 | 18.2 | 16.1 | 16.0 | 13.6 | 14.6 | 13.5 | 12.4 | 11.2 | 10.6 | 12.5 | 12.6 | 15.6 | 16.0 | 14.1 | 14.7 | 15.8 | 10.7 | 11.5 | 11.1 | 14.1 |
| Millendon (Swan Valley) | 9.9 | 7.5 | 5.8 | 3.8 | 9.4 | 11.7 | 6.3 | 5.3 | 9.0 | 14.4 | 16.8 | 18.9 | 11.7 | 11.3 | 14.8 | 14.7 | 7.1 | 10.5 | 4.3 | 3.6 | 5.4 | 8.8 | 8.6 | 9.2 | 13.3 | 12.9 | 11.9 | 8.3 | 6.3 | 6.4 | 8.1 |
| Pearce RAAF | 10.4 | 6.5 | 6.1 | 3.1 | 10.4 | 12.5 | 7.6 | 5.0 | 6.6 | 15.4 | 17.2 | 19.3 | 11.8 | 10.4 | 15.7 | 16.2 | 7.2 | 11.1 | 9.1 | 4.5 | 7.2 | 8.3 | 11.0 | 10.0 | 13.5 | 13.0 | 13.0 | 9.4 | 6.0 | 8.6 | 9.0 |
| Perth Airport | 9.3 | 8.7 | 5.6 | 4.9 | 7.2 | 12.6 | 5.5 | 5.0 | 8.9 | 14.4 | 15.7 | 17.4 | 11.6 | 12.5 | 13.9 | 13.3 | 10.4 | 11.5 | 8.6 | 9.4 | 8.0 | 12.0 | 12.0 | 11.2 | 12.3 | 12.2 | 7.7 | 7.8 | 9.4 | 9.0 | |
| Perth Metro | 12.3 | 10.9 | 8.2 | 6.0 | 6.7 | 13.8 | 7.9 | 7.5 | 10.0 | 14.6 | 13.9 | 15.2 | 13.1 | 13.4 | 12.8 | 10.4 | 8.2 | 10.1 | 5.7 | 5.1 | 6.3 | 7.9 | 7.5 | 8.6 | 13.9 | 12.7 | 14.8 | 9.1 | 7.6 | 5.1 | 10.2 |
| Rottnest Island | 16.1 | 14.0 | 14.6 | 12.8 | 14.4 | 18.4 | 15.2 | 14.7 | 14.9 | 15.7 | 17.1 | 18.8 | 18.5 | 17.2 | 16.2 | 16.8 | 16.4 | 15.8 | 15.3 | 15.1 | 16.2 | 16.6 | 18.4 | 12.5 | 12.9 | 16.0 | 15.6 | 13.4 | 14.3 | 16.2 | |
| Swanbourne | 15.4 | 13.3 | 11.3 | 9.0 | 10.1 | 17.2 | 11.4 | 10.9 | 12.3 | 14.9 | 16.0 | 18.8 | 16.6 | 15.4 | 14.3 | 14.1 | 11.9 | 12.0 | 9.3 | 10.1 | 11.1 | 13.4 | 13.5 | 14.7 | 14.1 | 12.9 | 15.8 | 11.9 | 9.6 | 8.8 | 13.2 |
|
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 |
||||||||
| Daily rainfall for May 2018 | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | - | 0.8 | 0.6 | - | - | 1.8 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 42.0 | 18.0 | 9.6 | 2.8 | 3.2 | - | - | |
| Bickley | - | - | 5.0 | - | - | 5.2 | 1.2 | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 41.8 | 67.0 | 27.6 | 3.2 | 0.2 | 0.2 | - | |
| Bungendore | - | - | 0.4 | - | 0.2 | 1.6 | 2.2 | 0.2 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 39.8 | 27.0 | 16.0 | 8.4 | 0.2 | 0.2 | - | |
| Chidlow | - | - | 1.6 | - | - | → | 1.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 26.0 | ||||||
| Garden Island HSF | 0.2 | 0.6 | 1.2 | - | - | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 29.2 | 7.6 | 2.8 | 0.8 | 1.0 | - | - | |
| Gidgegannup | - | - | 2.8 | - | - | 1.2 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 25.4 | 40.0 | 9.2 | 3.6 | 0.4 | - | - | |
| Gosnells City | - | 0.4 | - | - | - | 3.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | → | → | → | 58.6 | 0.2 | 3.0 | 0.1 | - | - | |
| Huntly | 0.1 | 1.8 | 2.8 | - | - | 1.8 | 2.6 | - | - | - | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | 53.2 | 40.8 | 9.4 | 8.4 | 0.2 | - | ||
| Jandakot Aero | - | 0.4 | 1.4 | - | - | 6.0 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 39.4 | 16.4 | 16.0 | 1.2 | - | - | ||
| Jarrahdale | - | - | 1.6 | 0.2 | - | 4.4 | 3.0 | 0.2 | 0.2 | - | - | - | - | 0.2 | - | 0.2 | 0.2 | - | - | 0.2 | 0.2 | 0.2 | - | - | 38.8 | 39.4 | 12.0 | 6.6 | 0.6 | 0.2 | - | |
| Karnet | - | - | 3.9 | - | - | 4.2 | 4.3 | 0.1 | - | - | - | - | - | - | - | - | - | - | - | - | - | → | 39.2 | 4.0 | 15.4 | → | → | → | 1.4 | |||
| Karragullen North | - | - | 0.6 | - | - | 2.8 | 0.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 42.2 | 48.2 | 16.0 | 2.6 | ||||
| Maida Vale | - | - | 3.0 | - | - | 3.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 33.2 | 38.4 | 8.6 | 2.0 | 0.2 | |||
| Mandurah | - | 2.6 | 0.2 | - | - | 0.8 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 38.8 | 9.4 | 5.0 | 8.4 | 0.6 | - | - | |
| Midland | - | 5.1 | 1.3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 37.5 | - | - | - | - | 22.6 | ||
| Millendon (Swan Valley) | - | - | 2.8 | - | - | 0.6 | 0.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 28.4 | 33.4 | 2.8 | 2.2 | 0.4 | - | - | |
| Mount Solus | - | - | 1.8 | - | - | 2.6 | 0.8 | 0.2 | - | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 34.2 | 31.4 | 7.2 | 3.6 | - | 0.2 | - | |
| Muchea | - | - | 1.2 | - | - | 0.8 | 0.2 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 31.4 | 20.4 | 3.2 | 6.0 | 0.2 | - | - | |
| Mundaring | - | - | 2.0 | - | - | 2.4 | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 32.8 | 30.8 | 23.2 | 6.2 | 0.4 | - | - | |
| Noble Falls | 1.4 | 28.0 | 30.0 | 7.4 | 4.8 | 1.0 | ||||||||||||||||||||||||||
| Pearce RAAF | - | - | 1.2 | - | - | 1.0 | 0.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 27.6 | 24.2 | 4.0 | 3.0 | 0.4 | - | - | |
| Perth Airport | - | - | 1.2 | - | - | 2.0 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 31.6 | 27.6 | 5.6 | 3.8 | 0.2 | - | - | |
| Perth Metro | - | - | 2.6 | - | - | 3.2 | 0.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 29.2 | 24.6 | 4.2 | 2.8 | 0.4 | - | - | |
| Pinjarra Refinery | - | - | - | - | - | - | - | 0.4 | - | - | 0.1 | 0.9 | 0.6 | - | - | - | - | 2.0 | - | 0.2 | - | 23.8 | 0.5 | - | - | - | - | - | - | - | 1.4 | |
| Pinjarra South | - | 1.0 | 2.2 | - | - | 3.4 | 0.6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 34.6 | 15.0 | 5.0 | 3.4 | 0.8 | - | - | |
| Roleystone | - | - | - | - | - | 3.6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 48.6 | 32.6 | 12.8 | 2.8 | ||||
| Rottnest Island | - | 0.4 | - | - | - | 0.6 | - | - | - | - | - | - | 0.4 | - | - | - | - | - | - | - | - | - | 43.0 | 7.6 | 1.6 | - | 0.6 | - | - | |||
| Serpentine | - | - | 1.0 | - | - | 4.8 | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 34.2 | 17.4 | 5.8 | 2.2 | - | - | 0.2 | |
| Swanbourne | - | - | 1.0 | - | - | 1.4 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 41.4 | 21.6 | 2.8 | 1.4 | 0.6 | - | - | |
| Wanneroo | - | - | - | - | → | → | 1.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 27.2 | → | → | → | 23.0 | |||
| Werribee | - | - | 1.4 | - | - | 0.6 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 27.6 | 26.6 | 8.0 | 2.2 | 0.2 | 0.2 | - | |
| Whiteman Park | - | - | 2.8 | - | - | 2.0 | 0.4 | |||||||||||||||||||||||||
|
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 June 2018. 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
