Perth, Australia: Annual Weather Averages
January is the hottest month in Perth with an average temperature of 24.5°C (76°F) and the coldest is July at 13°C (55°F) with the most daily sunshine hours at 13 in January. The wettest month is June with an average of 140mm of rain. The best month to swim in the sea is in February when the average sea temperature is 22°C (72°F).
Average Temperature: Perth
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 25 | 25 | 23 | 19 | 16 | 14 | 13 | 13 | 15 | 16 | 20 | 22 |
| °F | 76 | 76 | 73 | 66 | 60 | 56 | 55 | 55 | 58 | 61 | 67 | 71 |
Average High/Low Temperature: Perth
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 31 | 31 | 29 | 24 | 20 | 18 | 17 | 17 | 19 | 21 | 25 | 27 |
| Low °C | 18 | 18 | 17 | 14 | 11 | 9 | 9 | 9 | 10 | 11 | 14 | 16 |
| High °F | 88 | 88 | 84 | 75 | 68 | 64 | 63 | 63 | 66 | 70 | 77 | 81 |
| Low °F | 64 | 64 | 63 | 57 | 52 | 48 | 48 | 48 | 50 | 52 | 57 | 61 |
Average Day/Night Temperature: Perth
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day °C | 27 | 27 | 24 | 21 | 17 | 15 | 14 | 15 | 16 | 20 | 23 | 25 |
| Night °C | 23 | 23 | 22 | 19 | 15 | 13 | 12 | 13 | 14 | 16 | 19 | 21 |
| Day °F | 80 | 80 | 75 | 69 | 63 | 60 | 58 | 59 | 61 | 67 | 73 | 77 |
| Night °F | 73 | 73 | 71 | 66 | 58 | 55 | 53 | 55 | 56 | 61 | 65 | 69 |
Average Rainfall: Perth
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 10 | 10 | 10 | 40 | 70 | 140 | 130 | 110 | 80 | 30 | 20 | 10 |
| Days | 5 | 4 | 5 | 7 | 12 | 15 | 17 | 15 | 15 | 9 | 7 | 4 |
Average Daily Sunshine Hours: Perth
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours | 13 | 11 | 11 | 9 | 8 | 7 | 7 | 8 | 7 | 10 | 11 | 12 |
Average Sea Temperature: Perth
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 21 | 22 | 22 | 22 | 21 | 21 | 19 | 19 | 18 | 19 | 19 | 20 |
| °F | 70 | 72 | 72 | 72 | 70 | 70 | 66 | 66 | 64 | 66 | 66 | 68 |
