Friday, 1 February 2019 - Monthly Climate Summary for Greater Perth - Product code IDCKGC11L0
Greater Perth in January 2019: coolest January for over a decade
Both mean maximum and minimum temperatures were below average across Greater Perth. For Perth Metro and Perth Airport, it was the coolest January since 2007. Monthly rainfall totals were mostly less than 10 mm, and the lowest January rainfall for four years for most sites.
Below average rainfall
- Monthly rainfall totals were mostly less than 10 mm, increasing to about 20 mm in the Perth hills; the lowest January rainfall since 2015 for most sites
- Perth Metro recorded a monthly total of 7.2 mm over 4 days, which was its lowest January rainfall since a total of 0.2 mm in 2014
- A cut-off low pressure system near the far southwest WA on the 23rd produced widespread light rainfall with moderate falls in the Perth hills
Cooler than average temperatures
- Mean maximum temperatures were generally 1-3 °C below average across Greater Perth; while mean minimum temperature were mostly 1-2 °C below average
- In terms of mean maximum temperature, Swanbourne had its coolest January on record, and Perth Metro's mean of 30.5 °C was its coolest January since 2007 when a mean of 29.1 °C was recorded
- Perth Metro, Perth Airport, Pearce RAAF and Swan Valley recorded two consecutive days with temperature over 40 °C on the 19th and 20th; Perth Metro's 42.1 °C on the 20th was its highest January temperature for four years since a 44.4 °C was recorded on 5 January 2015
- The coolest days were on the 23rd and 24th with daily maxima merely in the high 10s to low 20s
- Perth Metro's mean minimum temperature of 16.6 °C equalled its January record low mean minimum set in 2007; Pearce RAAF had its lowest January mean minimum since 1990
Perth Metro
- Total rainfall for Perth Metro was 7.2 mm, which is 37% of the long-term average of 19.7 mm
- The mean daily maximum temperature for Perth Metro was 30.5 °C, which is 0.7 °C below the long-term average of 31.2 °C
- The warmest day was 42.1 °C on the 20th, and the coolest day was on the 24th when the temperature reached 20.6 °C
- The mean daily minimum temperature for Perth Metro was 16.6 °C, which is 1.5 °C below the long-term average of 18.1 °C
- The coldest morning was 10.0 °C on the 4th, and the warmest morning was on the 6th when the minimum temperature was 20.3 °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 January 2019 | |
|---|---|
| Hottest day | 44.4 °C at Pearce RAAF on the 20th |
| Warmest days on average | 33.1 °C at Pearce RAAF |
| Coolest days on average | 24.6 °C at Garden Island HSF |
| Coldest day | 17.3 °C at Bickley on the 24th |
| Coldest night | 6.8 °C at Jandakot Aero on the 4th |
| Coolest nights on average |
14.7 °C at Bickley 14.7 °C at Pearce RAAF |
| Warmest nights on average | 18.1 °C at Rottnest Island |
| Warmest night | 24.0 °C at Mandurah on the 20th |
| Warmest on average overall | 23.9 °C at Pearce RAAF |
| Coolest on average overall | 21.3 °C at Garden Island HSF |
| Wettest overall | 23.6 mm at Karnet |
| Driest overall | 1.0 mm at Garden Island HSF |
| Wettest day | 20.1 mm at Karnet on the 24th |
| Strongest wind gust | 83 km/h at Rottnest Island on the 22nd |
Extremes Maps Records Summaries Daily observations Important notes the top
| Record lowest January daily maximum temperature | ||||||
|---|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for January |
|||
| Gosnells City | 20.0 | on the 23rd | 20.3 | on the 3rd in 2007 | 26 | 33.1 |
| Record lowest January mean daily maximum temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for January |
||
| Swanbourne | 27.6 | 27.8 | in 2006 | 25 | 29.9 |
| Record lowest January mean daily minimum temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for January |
||
| Perth Metro | 16.6 | = 16.6 | in 2007 | 25 | 18.1 |
| Lowest January mean daily minimum temperature for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (°C) |
Most recent lower |
Average for January |
|||
| Pearce RAAF | 14.7 | 14.3 | in 1990 | 17.0 | |
| Record lowest January mean temperature | |||||
|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for January |
||
| Swanbourne | 22.3 | = 22.3 | in 2006 | 25 | 24.1 |
Extremes Maps Records Summaries Daily observations Important notes the top
| Summary statistics for January 2019 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for January 2019 |
Diff from average |
Highest for January 2019 |
Mean for January 2019 |
Diff from average |
Lowest for January 2019 |
Total for January 2019 |
Average for January |
Rank of January 2019 |
Fraction of January average |
|||
| Bickley | 29.7 | -0.9 | 40.4 | 20th | 14.7 | -0.7 | 8.4 | 4th | 13.8 | 20.8 | average | 66% |
| Garden Island HSF | 24.6 | -2.8 | 33.0 | 31st | 18.0 | -1.0 | 13.7 | 25th | 1.0 | 15.6 | average | 6% |
| Jandakot Aero | 30.1 | -1.3 | 42.0 | 20th | 15.0 | -1.8 | 6.8 | 4th | 4.0 | 16.5 | average | 24% |
| Mandurah | 27.8 | -1.7 | 35.5 | 19th | 17.6 | -1.4 | 13.2 | 25th | 4.2 | 18.4 | average | 23% |
| Millendon (Swan Valley) | 32.2 | 43.9 | 20th | 15.0 | 8.5 | 4th | 9.6 | |||||
| Pearce RAAF | 33.1 | -0.4 | 44.4 | 20th | 14.7 | -2.3 | 10.0 | 12th | 3.8 | 10.6 | average | 36% |
| Perth Airport | 31.3 | -0.5 | 42.9 | 20th | 15.8 | -1.3 | 7.0 | 4th | 6.2 | 11.1 | average | 56% |
| Perth Metro | 30.5 | -0.7 | 42.1 | 20th | 16.6 | -1.5 | 10.0 | 4th | 7.2 | 19.7 | average | 37% |
| Rottnest Island | 24.9 | -1.6 | 35.4 | 20th | 18.1 | -1.0 | 14.1 | 25th | 4.8 | 16.6 | average | 29% |
| Swanbourne | 27.6 | -2.3 | 37.7 | 20th | 17.1 | -1.2 | 11.3 | 25th | 5.0 | 20.3 | average | 25% |
Extremes Maps Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for January 2019 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 33.4 | 22.4 | 21.2 | 23.8 | 30.9 | 34.4 | 33.3 | 30.9 | 31.1 | 25.4 | 28.5 | 34.8 | 29.3 | 29.9 | 29.5 | 27.4 | 25.7 | 31.9 | 38.2 | 40.4 | 32.2 | 27.7 | 18.6 | 17.3 | 25.6 | 29.6 | 33.8 | 38.0 | 30.9 | 30.1 | 34.2 |
| Garden Island HSF | 25.3 | 23.1 | 21.0 | 23.1 | 27.1 | 29.9 | 25.3 | 28.0 | 25.5 | 22.2 | 23.8 | 24.5 | 22.7 | 22.8 | 22.9 | 22.0 | 22.2 | 26.4 | 27.7 | 29.4 | 22.9 | 27.2 | 20.6 | 20.0 | 21.0 | 24.4 | 25.7 | 25.6 | 23.3 | 24.5 | 33.0 |
| Gosnells City | 33.2 | 25.0 | 33.4 | 36.5 | 34.0 | 32.8 | 31.5 | 28.9 | 36.0 | 29.5 | 30.3 | 30.0 | 28.0 | 27.0 | 34.0 | 39.6 | 42.0 | 20.0 | 21.0 | 26.9 | 33.2 | 36.4 | 32.0 | 33.0 | |||||||
| Jandakot Aero | 32.0 | 23.9 | 23.4 | 24.0 | 31.8 | 34.9 | 31.9 | 30.1 | 25.2 | 26.6 | 33.6 | 27.7 | 28.7 | 29.1 | 27.3 | 26.0 | 33.3 | 38.8 | 42.0 | 29.3 | 30.2 | 22.3 | 20.9 | 25.3 | 32.6 | 34.8 | 39.6 | 31.1 | 30.4 | 36.1 | |
| Karnet | 33.0 | 21.5 | 21.0 | 23.9 | 30.8 | 34.5 | 33.8 | 28.5 | 31.5 | 25.8 | 29.8 | 30.0 | 28.7 | 26.8 | 25.8 | 32.0 | 40.0 | 19.8 | 19.0 | 34.0 | 36.8 | 30.5 | 29.2 | 33.6 | |||||||
| Mandurah | 28.7 | 23.2 | 22.4 | 22.6 | 28.4 | 33.6 | 30.4 | 30.4 | 27.2 | 23.4 | 24.3 | 30.0 | 26.2 | 26.9 | 26.3 | 24.5 | 23.8 | 28.1 | 35.5 | 34.0 | 26.9 | 31.1 | 20.0 | 20.6 | 23.9 | 29.9 | 31.1 | 35.0 | 27.8 | 29.2 | 35.2 |
| Millendon (Swan Valley) | 35.3 | 26.0 | 24.9 | 25.8 | 34.0 | 37.2 | 34.7 | 34.0 | 33.8 | 27.5 | 30.1 | 35.4 | 29.7 | 32.1 | 31.9 | 30.1 | 28.2 | 34.3 | 41.0 | 43.9 | 32.8 | 30.2 | 21.9 | 20.4 | 27.6 | 32.9 | 37.0 | 41.0 | 32.7 | 32.9 | 37.4 |
| Pearce RAAF | 36.1 | 27.7 | 25.5 | 26.6 | 34.5 | 37.7 | 35.8 | 34.8 | 34.8 | 28.4 | 31.1 | 37.2 | 30.9 | 33.1 | 32.3 | 30.3 | 29.0 | 35.0 | 41.9 | 44.4 | 33.6 | 30.6 | 23.8 | 21.1 | 29.0 | 33.7 | 37.7 | 42.8 | 34.1 | 33.7 | 37.5 |
| Perth Airport | 34.1 | 24.6 | 24.5 | 25.5 | 32.7 | 36.7 | 32.5 | 33.9 | 31.5 | 26.1 | 28.2 | 35.4 | 28.7 | 30.2 | 30.5 | 29.2 | 26.7 | 34.0 | 40.5 | 42.9 | 31.6 | 30.6 | 21.5 | 20.4 | 26.7 | 32.9 | 36.8 | 40.2 | 31.7 | 33.2 | 37.3 |
| Perth Metro | 32.5 | 23.8 | 23.8 | 24.2 | 32.5 | 36.4 | 32.2 | 33.1 | 31.2 | 25.5 | 27.5 | 33.7 | 27.7 | 28.8 | 29.1 | 28.1 | 26.0 | 32.8 | 40.4 | 42.1 | 29.8 | 30.5 | 22.2 | 20.6 | 25.7 | 32.0 | 35.5 | 39.6 | 30.6 | 30.9 | 36.2 |
| Rottnest Island | 26.9 | 23.9 | 22.4 | 22.1 | 25.0 | 27.3 | 25.0 | 25.4 | 24.8 | 23.8 | 23.2 | 25.3 | 24.3 | 24.1 | 23.6 | 22.8 | 23.1 | 25.7 | 29.2 | 35.4 | 23.8 | 24.9 | 20.7 | 21.4 | 22.2 | 24.1 | 25.3 | 27.8 | 24.1 | 23.7 | 29.5 |
| Swanbourne | 26.8 | 23.0 | 22.7 | 23.6 | 29.3 | 34.3 | 26.4 | 31.4 | 28.8 | 26.1 | 27.1 | 24.7 | 24.7 | 24.9 | 24.2 | 24.2 | 29.0 | 37.0 | 37.7 | 25.0 | 27.2 | 22.4 | 21.4 | 23.0 | 27.7 | 31.9 | 34.6 | 25.8 | 27.4 | 34.9 | |
|
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 January 2019 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 16.9 | 16.2 | 13.5 | 8.4 | 12.9 | 17.1 | 17.2 | 14.9 | 14.8 | 17.0 | 12.9 | 14.8 | 16.4 | 15.5 | 13.2 | 13.4 | 12.5 | 12.9 | 15.9 | 21.5 | 21.5 | 16.5 | 12.5 | 12.0 | 8.6 | 12.0 | 13.5 | 17.3 | 16.6 | 13.8 | 13.2 |
| Garden Island HSF | 19.9 | 19.2 | 18.2 | 14.3 | 16.3 | 20.4 | 19.8 | 18.0 | 18.7 | 19.8 | 15.3 | 18.3 | 19.6 | 20.0 | 16.8 | 17.6 | 17.2 | 17.0 | 19.1 | 22.3 | 20.6 | 19.0 | 16.6 | 15.8 | 13.7 | 15.3 | 17.3 | 18.0 | 18.3 | 16.4 | 18.0 |
| Gosnells City | 17.8 | 20.0 | 9.9 | 20.8 | 16.0 | 19.0 | 16.1 | 14.0 | 18.9 | 19.5 | 15.0 | 15.5 | 15.5 | 15.0 | 20.0 | 14.5 | 11.0 | 16.0 | 18.1 | 16.6 | 13.1 | 17.8 | |||||||||
| Jandakot Aero | 16.4 | 19.6 | 16.8 | 6.8 | 12.3 | 17.7 | 16.7 | 17.6 | 18.1 | 13.9 | 11.2 | 11.9 | 17.4 | 17.1 | 15.5 | 14.8 | 14.0 | 11.6 | 15.3 | 19.6 | 17.6 | 17.1 | 16.0 | 14.5 | 9.1 | 14.0 | 16.1 | 12.4 | 12.2 | 15.5 | 17.2 |
| Karnet | 16.6 | 14.0 | 7.0 | 12.5 | 15.6 | 16.2 | 14.6 | 15.6 | 10.5 | 16.7 | 13.4 | 13.8 | 12.2 | 12.5 | 15.9 | 18.2 | 16.9 | 12.2 | 8.8 | 16.1 | 14.9 | 12.5 | 14.0 | ||||||||
| Mandurah | 20.3 | 19.6 | 17.7 | 13.8 | 15.4 | 19.4 | 19.4 | 17.6 | 18.6 | 19.4 | 16.3 | 17.4 | 19.0 | 18.8 | 16.7 | 16.3 | 16.5 | 16.2 | 20.1 | 24.0 | 20.7 | 18.9 | 16.0 | 15.1 | 13.2 | 14.0 | 16.8 | 18.3 | 16.7 | 15.7 | 17.6 |
| Millendon (Swan Valley) | 14.9 | 20.1 | 15.5 | 8.5 | 10.5 | 18.7 | 15.1 | 18.6 | 18.2 | 12.9 | 11.6 | 11.4 | 16.4 | 18.0 | 14.3 | 13.4 | 13.4 | 14.5 | 15.8 | 18.4 | 17.7 | 18.3 | 15.2 | 14.7 | 10.9 | 14.1 | 16.3 | 11.2 | 10.9 | 17.1 | 17.1 |
| Pearce RAAF | 12.7 | 19.7 | 15.8 | 10.2 | 11.0 | 19.5 | 14.9 | 18.7 | 19.2 | 13.2 | 11.6 | 10.0 | 16.9 | 16.9 | 12.9 | 13.2 | 13.5 | 13.7 | 15.9 | 17.9 | 16.7 | 17.3 | 14.0 | 14.1 | 10.0 | 13.6 | 17.5 | 11.4 | 10.8 | 16.6 | 17.4 |
| Perth Airport | 16.3 | 20.0 | 16.9 | 7.0 | 14.8 | 18.6 | 17.2 | 18.4 | 18.5 | 13.2 | 11.7 | 12.0 | 18.9 | 17.5 | 16.2 | 14.5 | 14.8 | 16.0 | 16.1 | 20.7 | 17.6 | 18.8 | 15.5 | 14.6 | 12.4 | 15.6 | 17.4 | 11.6 | 11.0 | 17.4 | 17.1 |
| Perth Metro | 17.2 | 19.7 | 17.4 | 10.0 | 12.9 | 20.3 | 19.7 | 18.3 | 18.5 | 17.0 | 14.5 | 14.0 | 20.1 | 17.7 | 17.1 | 16.5 | 16.0 | 14.2 | 18.2 | 20.0 | 19.9 | 19.7 | 16.0 | 15.0 | 11.6 | 15.2 | 16.1 | 13.2 | 14.0 | 17.3 | |
| Rottnest Island | 19.2 | 18.9 | 17.5 | 15.8 | 17.1 | 19.5 | 20.0 | 18.6 | 19.2 | 18.7 | 18.3 | 18.7 | 18.9 | 19.0 | 17.5 | 17.6 | 17.8 | 17.5 | 19.7 | 21.8 | 19.6 | 19.4 | 14.7 | 14.5 | 14.1 | 16.0 | 18.2 | 18.9 | 18.2 | 17.7 | 18.8 |
| Swanbourne | 17.7 | 19.3 | 17.3 | 12.2 | 14.8 | 19.8 | 19.3 | 17.8 | 18.3 | 18.4 | 16.0 | 15.8 | 19.4 | 17.6 | 16.2 | 16.1 | 16.2 | 15.0 | 18.5 | 21.8 | 20.5 | 19.0 | 15.7 | 15.2 | 11.3 | 15.1 | 17.1 | 16.9 | 16.8 | 16.8 | 18.0 |
|
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 January 2019 | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | - | - | 1.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1.0 | 8.2 | 0.6 | - | - | - | - | - | - | |
| Bickley | - | - | 1.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2.8 | 9.6 | 0.2 | - | - | - | - | - | - | |
| Bungendore | - | - | 2.8 | - | - | - | - | - | 0.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | 1.0 | 8.8 | 0.6 | - | - | - | - | - | - | |
| Chidlow | - | - | 0.2 | - | - | - | - | - | 1.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5.6 | ||||||||
| Garden Island HSF | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.6 | 0.4 | - | - | - | - | - | - | |
| Gidgegannup | - | - | 0.8 | - | - | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.8 | 10.6 | 0.2 | - | - | - | - | - | - | |
| Gosnells City | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | → | → | 4.6 | - | - | - | - | - | - | - | |
| Huntly | - | 0.2 | 3.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 6.6 | 9.5 | - | - | - | - | - | - | - | |
| Jandakot Aero | - | - | 0.6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3.2 | 0.2 | - | - | - | - | - | - | ||
| Jarrahdale | - | - | 2.0 | - | - | - | - | - | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | 2.4 | 14.0 | 0.6 | - | - | - | - | - | - | |
| Karnet | → | 0.5 | 1.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | → | 1.2 | 20.1 | 0.4 | - | - | - | - | |||
| Karragullen North | - | - | 1.4 | - | - | - | - | - | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | 3.8 | 11.8 | 0.2 | |||||||
| Maida Vale | - | - | 0.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1.0 | 7.0 | ||||||||
| Mandurah | - | - | 0.2 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.6 | 3.2 | - | - | - | - | - | - | - | |
| Midland | - | - | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
| Millendon (Swan Valley) | - | - | 0.6 | - | - | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | 3.8 | 4.8 | 0.2 | - | - | - | - | - | - | |
| Mosman Park | - | - | 1.6 | - | - | - | - | - | 0.6 | |||||||||||||||||||||||
| Mount Solus | - | 0.2 | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1.0 | 16.6 | - | - | - | - | - | - | - | |
| Muchea | - | - | 1.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2.8 | - | - | - | - | - | - | - | |
| Mundaring | - | - | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.1 | 1.2 | 9.0 | 0.4 | |||||||
| Noble Falls | 0.6 | |||||||||||||||||||||||||||||||
| Pearce RAAF | - | - | 0.6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3.2 | - | - | - | - | - | - | - | |
| Perth Airport | - | - | 0.6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.4 | 5.0 | 0.2 | - | - | - | - | - | - | |
| Perth Metro | - | - | 1.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.4 | 4.8 | 0.2 | - | - | - | - | - | ||
| Pinjarra South | - | - | 0.6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2.2 | 2.6 | - | - | - | - | - | - | - | |
| Roleystone | - | - | - | - | - | - | - | - | 1.6 | - | - | - | - | - | - | - | - | - | - | - | - | - | 2.2 | 8.0 | ||||||||
| Rottnest Island | - | - | 0.8 | - | - | - | - | - | 0.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | 1.2 | 2.0 | - | - | - | - | - | - | - | |
| Serpentine | - | - | 0.8 | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.2 | 5.0 | 0.6 | - | - | - | - | - | - | |
| Swanbourne | - | - | 1.6 | - | - | - | - | - | 0.6 | - | - | - | - | - | - | - | - | - | - | - | - | 0.4 | 2.4 | - | - | - | - | - | - | - | ||
| Tamala Park (Mindarie) | - | - | - | - | - | - | - | 0.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1.8 | 1.8 | - | - | - | - | - | - | - | |
| Wanneroo | - | - | - | - | - | - | - | - | 0.1 | - | - | - | - | - | - | - | - | - | - | - | - | - | 6.6 | 1.8 | ||||||||
| Werribee | - | - | - | 0.2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.2 | - | 3.6 | - | - | - | - | - | - | - | |
| Whiteman Park | - | - | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.6 | 5.2 | ||||||||
|
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 10 am on Friday 1 February 2019. 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
