Friday, 1 May 2020 - Monthly Climate Summary for Greater Perth - Product code IDCKGC11L0
Greater Perth in April 2020: dry with hot days in early April
April was dry and temperatures were generally mild across Greater Perth, apart from few hot days in early April including the record breaking day on the 11th. Monthly rainfall was well below average despite there were at least eight days of light rainfall late in April.
Below average rainfall
- Monthly rainfall totals were less than 10 mm along the coast and in offshore islands, about 10–15 mm in the coastal plain sites, and up to 20–25 mm in the Perth hills
- Monthly rainfall was 20–40% of April average across Perth
- The wettest day was on the 19th as a cold front produced moderate rainfall at several sites in the Perth hills
- Perth Metro recorded 13.2 mm, which was its seventh–driest April on record, and driest since 2017 (nil rainfall), since records commenced in 1993
Above average daytime and overnight temperatures
- Mean maximum temperatures ranged in the mid–to–high twenties, and about 0.4–1.5 °C above average, across Greater Perth
- In early April, Perth experienced a few days of temperatures over 30 °C from the 6th till the 11th, when temperatures climbed even further to the low forties in inland northern suburbs, and multiple April temperature records broken
- Perth Metro had five consecutive days with temperature of 32 °C or higher between the 7th and 11th, which was a record for April; the previous record was four consecutive days and occurred on four occasions
- Perth Metro recorded 39.5 °C on the 11th, a new April temperature record, and 2.2 °C higher than its previous record; Perth city previously had only recorded 37 °C or above twice in April (37.6 °C on the 9th in 1910 and 37.1 °C on the 3rd in 1971 at Perth Regional Office)
- Mean minimum temperatures ranged in the teens, and 0.5–1.0 °C above average, across Greater Perth
- The mean minimum temperature at Perth Metro was 14.7 °C, which was its warmest April since 2016 (15.3 °C), and equal fifth-warmest April on record
Perth Metro
- Total rainfall for Perth Metro was 13.2 mm, which is 38% of the long-term average of 35.2 mm
- The mean daily maximum temperature for Perth Metro was 26.4 °C, which is 0.5 °C above the long-term average of 25.9 °C
- The warmest day was 39.5 °C on the 11th, and the coolest day was on the 28th when the temperature reached 20.8 °C
- The mean daily minimum temperature for Perth Metro was 14.7 °C, which is 0.9 °C above the long-term average of 13.8 °C
- The coldest morning was 8.9 °C on the 3rd, and the warmest morning was on the 12th when the minimum temperature was 21.7 °C
Further information
- Media
- media@bom.gov.au (03) 9669 4057
Extremes Maps Records Summaries Daily observations Important notes the top
| Extremes in April 2020 | |
|---|---|
| Hottest day | 40.7 °C at Pearce RAAF on the 11th |
| Warmest days on average | 28.0 °C at Pearce RAAF |
| Coolest days on average | 24.0 °C at Bickley |
| Coldest day |
18.3 °C at Karnet on the 28th 18.3 °C at Bickley on the 30th |
| Coldest night |
6.2 °C at Jandakot Aero on the 3rd 6.2 °C at Karnet on the 29th |
| Coolest nights on average | 12.6 °C at Karnet |
| Warmest nights on average | 17.9 °C at Rottnest Island |
| Warmest night |
22.4 °C at Pearce RAAF on the 7th 22.4 °C at Rottnest Island on the 11th 22.4 °C at Swanbourne on the 11th 22.4 °C at Mandurah on the 12th |
| Warmest on average overall | 21.1 °C at Rottnest Island |
| Coolest on average overall | 18.7 °C at Bickley |
| Wettest overall | 25.0 mm at Jarrahdale |
| Driest overall | 6.0 mm at Pinjarra South |
| Wettest day | 13.4 mm at Jarrahdale on the 19th |
| Strongest wind gust | 72 km/h at Ocean Reef on the 19th |
Extremes Maps Records Summaries Daily observations Important notes the top
| Record highest April temperature | ||||||
|---|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for April |
|||
| Perth Airport | 39.6 | on the 11th | 37.7 | on the 8th in 2013 | 76 | 25.6 |
| Pearce RAAF | 40.7 | on the 11th | 39.4 | on the 8th in 2013 | 63 | 26.5 |
| Karnet | 36.6 | on the 11th | 35.0 | on the 8th in 2013 | 54 | 23.3 |
| Rottnest Island | 35.2 | on the 11th | 33.1 | on the 10th in 2009 | 31 | 23.7 |
| Jandakot Aero | 39.2 | on the 11th | 37.0 | on the 8th in 2013 | 30 | 25.8 |
| Bickley | 36.5 | on the 11th | 35.1 | on the 8th in 2013 | 27 | 23.6 |
| Gosnells City | 39.5 | on the 11th | 38.5 | on the 8th in 2013 | 27 | 26.5 |
| Perth Metro | 39.5 | on the 11th | 37.3 | on the 8th in 2013 | 27 | 25.9 |
| Swanbourne | 37.3 | on the 11th | 35.9 | on the 6th in 2005 | 27 | 25.3 |
Extremes Maps Records Summaries Daily observations Important notes the top
| Summary statistics for April 2020 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for April 2020 |
Diff from average |
Highest for April 2020 |
Mean for April 2020 |
Diff from average |
Lowest for April 2020 |
Total for April 2020 |
Average for April |
Rank of April 2020 |
Fraction of April average |
|||
| Bickley | 24.0 | +0.4 | 36.5 | 11th | 13.5 | +0.9 | 6.6 | 29th | 18.2 | 54.7 | low | 33% |
| Garden Island HSF | 24.4 | +0.6 | 37.1 | 11th | 17.0 | +0.9 | 11.3 | 29th | 8.8 | 35.8 | v low | 25% |
| Gosnells City | 26.7 | +0.2 | 39.5 | 11th | 14.4 | -0.4 | 10.0 | 20th | 8.0 | 41.7 | low | 19% |
| Jandakot Aero | 26.2 | +0.4 | 39.2 | 11th | 13.5 | +1.0 | 6.2 | 3rd | 16.4 | 41.1 | low | 40% |
| Karnet | 24.3 | +1.0 | 36.6 | 11th | 12.6 | +0.8 | 6.2 | 29th | 19.1 | 64.6 | low | 30% |
| Mandurah | 24.5 | +0.4 | 33.2 | 10th | 16.9 | +1.1 | 10.3 | 29th | 8.2 | 37.5 | low | 22% |
| Millendon (Swan Valley) | 27.5 | 40.4 | 11th | 13.2 | 7.1 | 29th | 10.2 | |||||
| Pearce RAAF | 28.0 | +1.5 | 40.7 | 11th | 13.5 | +0.2 | 7.0 | 3rd | 10.4 | 34.0 | low | 31% |
| Perth Airport | 26.9 | +1.3 | 39.6 | 11th | 13.5 | +0.5 | 8.3 | 3rd | 14.0 | 39.7 | low | 35% |
| Perth Metro | 26.4 | +0.5 | 39.5 | 11th | 14.7 | +0.9 | 8.9 | 3rd | 13.2 | 35.2 | low | 38% |
| Rottnest Island | 24.2 | +0.5 | 35.2 | 11th | 17.9 | +0.6 | 12.5 | 29th | 6.6 | 32.3 | low | 20% |
| Swanbourne | 25.2 | -0.1 | 37.3 | 11th | 16.3 | +1.0 | 10.8 | 29th | 14.0 | 38.3 | low | 37% |
Extremes Maps Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for April 2020 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| Bickley | 26.1 | 22.4 | 22.2 | 22.1 | 21.8 | 28.5 | 31.1 | 31.5 | 33.2 | 33.8 | 36.5 | 24.5 | 24.0 | 23.2 | 21.0 | 22.9 | 25.3 | 20.8 | 19.2 | 20.3 | 21.5 | 21.1 | 22.8 | 19.8 | 21.0 | 24.1 | 23.0 | 19.0 | 18.7 | 18.3 |
| Garden Island HSF | 23.7 | 22.2 | 20.6 | 24.2 | 25.0 | 31.8 | 34.4 | 29.1 | 28.1 | 26.5 | 37.1 | 25.6 | 25.7 | 22.4 | 22.6 | 21.0 | 23.3 | 21.3 | 21.9 | 23.3 | 24.5 | 23.1 | 23.2 | 23.1 | 21.7 | 22.7 | 20.4 | 19.0 | 22.1 | 22.2 |
| Gosnells City | 24.5 | 24.5 | 26.2 | 25.5 | 32.5 | 34.5 | 33.5 | 36.6 | 39.5 | 26.6 | 26.5 | 25.5 | 25.0 | 26.1 | 28.2 | 21.5 | 23.0 | 24.5 | 25.0 | 25.0 | 25.4 | 23.2 | 24.4 | 26.4 | 23.5 | 21.6 | 22.8 | |||
| Jandakot Aero | 27.4 | 24.5 | 23.8 | 25.3 | 24.7 | 31.8 | 34.8 | 32.7 | 33.5 | 35.1 | 39.2 | 26.1 | 26.0 | 25.0 | 24.1 | 24.4 | 26.9 | 21.1 | 22.0 | 24.0 | 24.5 | 24.9 | 24.9 | 22.6 | 23.6 | 26.0 | 22.6 | 20.7 | 21.9 | 21.6 |
| Karnet | 26.1 | 22.4 | 22.3 | 21.0 | 21.1 | 31.7 | 32.0 | 32.0 | 34.5 | 36.6 | 24.5 | 24.5 | 22.6 | 22.0 | 23.0 | 26.8 | 22.5 | 19.1 | 20.8 | 21.5 | 20.5 | 23.2 | 21.0 | 21.4 | 24.2 | 21.1 | 18.3 | |||
| Mandurah | 24.6 | 23.3 | 21.6 | 24.8 | 24.4 | 31.3 | 30.2 | 26.8 | 29.1 | 33.2 | 30.4 | 25.7 | 25.8 | 24.2 | 23.7 | 22.4 | 25.5 | 21.5 | 22.0 | 23.0 | 23.2 | 22.3 | 23.7 | 23.7 | 22.6 | 23.5 | 21.1 | 20.0 | 21.4 | 21.1 |
| Millendon (Swan Valley) | 29.7 | 25.9 | 25.3 | 26.0 | 27.6 | 32.9 | 35.0 | 35.4 | 36.3 | 38.0 | 40.4 | 27.1 | 27.3 | 26.0 | 24.8 | 26.1 | 28.5 | 22.8 | 22.9 | 24.7 | 25.8 | 25.5 | 25.6 | 23.4 | 24.1 | 27.2 | 24.9 | 21.8 | 22.0 | 22.0 |
| Pearce RAAF | 30.1 | 26.7 | 25.5 | 25.8 | 28.1 | 32.5 | 35.7 | 35.8 | 37.7 | 39.2 | 40.7 | 27.7 | 28.0 | 26.3 | 25.6 | 26.5 | 29.4 | 23.9 | 23.8 | 25.0 | 26.2 | 25.5 | 26.3 | 23.6 | 24.5 | 27.7 | 26.3 | 22.1 | 22.2 | 21.8 |
| Perth Airport | 28.5 | 25.2 | 25.3 | 25.0 | 26.3 | 32.0 | 35.0 | 34.4 | 35.3 | 35.8 | 39.6 | 26.4 | 26.6 | 25.6 | 25.1 | 25.9 | 28.5 | 21.9 | 22.8 | 24.3 | 25.5 | 24.3 | 25.5 | 22.8 | 24.2 | 26.5 | 24.0 | 21.7 | 22.1 | 21.6 |
| Perth Metro | 27.1 | 24.1 | 23.7 | 24.6 | 26.5 | 31.8 | 33.6 | 32.6 | 34.0 | 35.6 | 39.5 | 26.2 | 26.7 | 24.9 | 24.2 | 25.1 | 27.4 | 22.1 | 22.7 | 24.4 | 24.5 | 24.6 | 25.1 | 22.8 | 23.8 | 26.4 | 23.6 | 20.8 | 21.8 | 21.4 |
| Rottnest Island | 23.2 | 23.7 | 20.5 | 23.4 | 25.1 | 30.1 | 30.5 | 27.2 | 30.0 | 27.2 | 35.2 | 25.5 | 25.0 | 24.0 | 23.4 | 21.1 | 23.4 | 21.7 | 22.0 | 23.5 | 23.4 | 24.4 | 22.6 | 23.4 | 22.7 | 22.0 | 21.6 | 19.5 | 20.4 | 20.4 |
| Swanbourne | 24.0 | 24.1 | 21.8 | 24.9 | 26.0 | 32.1 | 35.2 | 30.3 | 29.6 | 31.5 | 37.3 | 24.8 | 25.1 | 24.0 | 23.7 | 23.0 | 25.4 | 21.4 | 22.1 | 23.9 | 24.1 | 24.3 | 23.0 | 22.8 | 23.0 | 23.4 | 21.2 | 20.3 | 21.7 | 21.4 |
|
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 April 2020 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| Bickley | 12.6 | 15.2 | 8.5 | 8.9 | 11.5 | 13.6 | 15.4 | 19.3 | 18.6 | 18.5 | 17.5 | 19.4 | 15.0 | 13.7 | 13.0 | 11.4 | 13.0 | 15.3 | 14.6 | 10.3 | 13.8 | 13.9 | 14.5 | 13.6 | 14.8 | 11.2 | 12.9 | 11.5 | 6.6 | 6.9 |
| Garden Island HSF | 16.9 | 18.9 | 13.3 | 14.1 | 16.6 | 17.0 | 21.2 | 17.6 | 17.0 | 19.0 | 18.4 | 20.6 | 21.1 | 17.3 | 19.5 | 14.6 | 16.0 | 15.2 | 17.8 | 17.8 | 18.5 | 20.5 | 18.9 | 15.1 | 18.6 | 14.3 | 16.2 | 16.0 | 11.3 | 12.0 |
| Gosnells City | 14.3 | 11.0 | 13.6 | 16.8 | 20.1 | 16.5 | 21.5 | 16.1 | 14.0 | 13.8 | 13.0 | 15.5 | 13.1 | 14.3 | 10.0 | 16.0 | 15.0 | 15.0 | 17.0 | 12.5 | 11.6 | 13.0 | 11.0 | 10.7 | ||||||
| Jandakot Aero | 12.1 | 17.1 | 6.2 | 10.5 | 14.6 | 16.7 | 20.6 | 16.0 | 14.0 | 19.9 | 20.5 | 19.9 | 12.9 | 12.1 | 14.1 | 8.9 | 12.8 | 10.9 | 16.8 | 9.1 | 15.2 | 13.7 | 12.1 | 11.7 | 16.1 | 10.8 | 11.0 | 12.9 | 7.0 | 9.3 |
| Karnet | 12.8 | 15.7 | 7.3 | 10.0 | 13.7 | 19.4 | 14.7 | 19.5 | 19.3 | 13.1 | 10.6 | 9.5 | 10.8 | 14.9 | 8.0 | 12.5 | 12.5 | 14.1 | 11.2 | 15.2 | 10.5 | 9.8 | 10.5 | 6.2 | ||||||
| Mandurah | 15.9 | 17.9 | 12.8 | 13.5 | 16.6 | 17.6 | 20.3 | 19.4 | 18.8 | 21.6 | 22.0 | 22.4 | 19.5 | 17.2 | 19.1 | 13.5 | 15.4 | 16.4 | 18.2 | 16.0 | 16.2 | 19.4 | 17.4 | 15.9 | 18.6 | 13.8 | 15.0 | 15.1 | 10.3 | 11.0 |
| Millendon (Swan Valley) | 9.9 | 17.1 | 7.4 | 9.5 | 16.2 | 18.6 | 20.5 | 15.7 | 14.2 | 18.4 | 20.8 | 19.0 | 14.7 | 11.9 | 9.9 | 9.1 | 12.9 | 10.8 | 16.3 | 8.9 | 14.2 | 12.4 | 12.5 | 12.0 | 16.1 | 10.4 | 9.0 | 11.0 | 7.1 | 10.4 |
| Pearce RAAF | 8.7 | 17.0 | 7.0 | 9.8 | 16.6 | 19.3 | 22.4 | 15.4 | 15.3 | 17.6 | 20.5 | 19.0 | 15.3 | 10.8 | 11.2 | 8.4 | 14.2 | 10.9 | 16.6 | 9.6 | 13.6 | 13.0 | 13.1 | 12.4 | 16.6 | 9.8 | 8.8 | 12.1 | 8.1 | 11.3 |
| Perth Airport | 11.0 | 17.9 | 8.3 | 10.0 | 15.3 | 18.3 | 19.4 | 15.4 | 14.6 | 20.2 | 21.4 | 19.8 | 14.0 | 11.3 | 11.6 | 9.4 | 12.2 | 10.3 | 16.3 | 9.1 | 14.7 | 13.4 | 13.8 | 12.0 | 16.4 | 10.2 | 9.4 | 11.4 | 9.8 | 9.4 |
| Perth Metro | 13.0 | 18.0 | 8.9 | 11.5 | 15.1 | 18.5 | 19.0 | 17.1 | 15.7 | 19.6 | 21.2 | 21.7 | 15.2 | 15.7 | 16.3 | 10.7 | 12.7 | 11.9 | 17.4 | 10.3 | 15.1 | 13.8 | 14.1 | 13.7 | 16.9 | 11.2 | 11.2 | 14.0 | 10.9 | 9.4 |
| Rottnest Island | 17.2 | 17.9 | 15.0 | 14.7 | 16.6 | 18.6 | 21.3 | 20.3 | 20.1 | 21.5 | 22.4 | 21.6 | 19.3 | 18.7 | 18.3 | 15.4 | 17.5 | 19.0 | 17.4 | 16.5 | 17.5 | 18.4 | 18.4 | 18.2 | 18.8 | 16.7 | 18.1 | 16.2 | 12.5 | 12.8 |
| Swanbourne | 14.6 | 18.6 | 11.9 | 13.5 | 15.7 | 18.4 | 20.4 | 19.4 | 18.1 | 20.3 | 22.4 | 21.4 | 18.8 | 15.6 | 18.9 | 12.8 | 14.8 | 14.8 | 17.8 | 12.1 | 16.2 | 17.9 | 17.5 | 15.6 | 17.9 | 13.2 | 13.4 | 15.3 | 10.8 | 10.9 |
|
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 |
|||||||
| Daily rainfall for April 2020 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||
| Anketell | - | - | - | - | 1.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | 5.9 | 0.1 | 0.5 | 0.1 | 0.6 | - | 0.2 | 0.6 | - | 3.4 | - | - | |
| Bickley | - | - | - | - | 2.8 | - | - | - | - | - | - | - | - | 0.2 | - | - | - | - | 10.2 | - | 2.0 | 0.2 | 0.6 | - | 1.0 | 1.2 | - | - | - | - | |
| Bungendore | - | - | - | - | 2.0 | - | - | - | - | - | - | - | - | - | - | - | 0.2 | - | 10.4 | 0.6 | 0.6 | 0.2 | 1.4 | - | 3.8 | 0.4 | 0.2 | 0.4 | - | - | |
| Chidlow | - | - | - | - | - | 1.1 | - | - | - | - | - | - | - | - | - | - | - | - | - | 9.5 | 0.5 | - | 0.1 | - | 1.2 | → | → | 0.6 | |||
| Garden Island HSF | - | - | 0.6 | 0.2 | 0.4 | 0.2 | - | 0.4 | 0.6 | - | - | - | - | - | - | - | - | 4.4 | 0.6 | 0.6 | 0.2 | 0.2 | - | - | 0.2 | - | 0.2 | - | - | ||
| Gidgegannup | - | - | - | - | 0.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | 8.8 | - | 0.4 | - | 0.6 | - | 6.6 | 0.2 | - | 0.4 | - | - | |
| Gosnells City | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5.0 | - | - | - | 1.0 | → | 2.0 | - | - | - | - | - | |
| Huntly | - | - | - | - | 1.1 | - | - | - | - | - | - | - | 1.0 | - | - | - | - | - | 7.8 | 0.2 | 0.2 | 0.5 | 2.8 | - | - | 0.5 | - | 1.5 | - | - | |
| Jandakot Aero | - | - | - | - | 1.6 | - | - | - | - | - | - | - | - | - | - | - | - | - | 10.2 | 0.2 | - | - | 1.0 | - | 0.8 | 1.0 | - | 1.6 | - | - | |
| Jarrahdale | - | - | - | - | 0.8 | - | - | - | - | - | - | - | 0.4 | - | 0.2 | - | - | 0.2 | 13.4 | 0.8 | 2.6 | 0.4 | 2.8 | - | 2.2 | 0.2 | 0.4 | 0.4 | 0.2 | - | |
| Karnet | - | - | - | - | 1.0 | 0.2 | - | - | - | - | - | 0.3 | 0.5 | - | - | - | - | - | 9.2 | 0.2 | 2.5 | 0.2 | 3.6 | - | 0.5 | - | - | 0.9 | - | ||
| Karragullen North | - | - | - | - | 2.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | 7.6 | - | 1.2 | - | 1.0 | - | 0.6 | - | - | 1.0 | |||
| Maida Vale | - | - | - | 1.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 6.8 | - | 1.2 | - | 2.0 | - | 1.6 | 9.4 | - | 1.0 | |||
| Mandurah | - | - | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | 3.2 | - | - | 0.8 | 1.0 | 0.2 | 2.6 | - | 0.2 | - | - | - | |
| Millendon (Swan Valley) | - | - | - | - | 0.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | 5.6 | 0.6 | 0.4 | - | 0.4 | 0.2 | 1.0 | 1.0 | - | 0.2 | - | - | |
| Mount Solus | 0.2 | - | - | - | 0.6 | 0.2 | - | - | - | - | - | - | - | 0.4 | - | - | - | - | 9.0 | 0.2 | 1.4 | 0.2 | 4.2 | - | 0.4 | 0.2 | - | 0.2 | - | - | |
| Muchea | - | - | - | - | 1.8 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | 5.8 | - | 0.2 | - | 0.4 | - | - | 0.6 | 0.2 | - | - | - | |
| Mundaring | - | - | - | - | 1.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | 12.2 | 0.2 | → | 1.2 | 0.4 | - | 2.0 | 2.4 | - | 0.4 | |||
| Pearce RAAF | - | - | - | - | 0.4 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | 6.0 | 0.8 | 0.4 | 0.2 | - | - | 1.2 | 1.0 | - | 0.2 | - | - | |
| Perth Airport | - | - | - | - | 1.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | 6.6 | 0.2 | 0.6 | - | 1.2 | - | 2.8 | 1.2 | - | - | - | - | |
| Perth Metro | - | 0.2 | - | - | 1.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | 6.4 | - | 0.4 | 0.2 | 1.0 | - | 2.6 | 0.2 | - | 0.8 | - | - | |
| Pinjarra South | - | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | 3.8 | 0.2 | - | 0.4 | 0.2 | - | 0.8 | - | - | 0.4 | - | - | |
| Roleystone | - | - | - | - | 3.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | 8.2 | - | 2.8 | 0.2 | 1.0 | - | 1.6 | - | - | 1.8 | |||
| Rottnest Island | - | - | - | - | 0.4 | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | 4.2 | 0.2 | 0.2 | 0.6 | - | - | - | 0.2 | - | 0.4 | 0.2 | - | |
| Serpentine | - | - | - | - | 0.2 | 0.2 | 0.6 | - | - | - | - | - | - | - | - | - | - | - | 10.6 | 0.4 | 1.6 | 0.2 | 1.6 | 0.2 | 1.0 | 0.2 | - | - | 0.2 | - | |
| Subiaco Treatment Plant | - | - | 0.4 | ||||||||||||||||||||||||||||
| Swanbourne | - | - | - | - | 1.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | 5.2 | - | 0.2 | - | 0.2 | - | 5.6 | 0.2 | - | 0.8 | - | - | |
| Tamala Park (Mindarie) | - | - | 2.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 4.0 | 0.1 | 0.4 | - | 0.1 | - | 0.1 | 0.4 | - | 1.0 | - | - | |
| Wanneroo | - | - | - | → | → | 2.2 | - | - | - | - | - | - | - | - | - | - | - | → | → | 7.4 | - | - | 1.2 | - | - | → | → | → | 1.6 | ||
| Werribee | - | - | - | - | 1.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | 4.4 | 0.2 | - | - | - | 0.2 | 3.0 | - | 0.2 | 0.4 | 0.2 | - | |
| Whiteman Park | - | - | - | - | 0.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | 7.2 | 0.8 | 2.0 | - | 3.2 | 0.2 | 1.2 | ||||||
|
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.
This summary includes 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 May 2020. 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
