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January is the hottest month in Sydney, with an average high of 28°C / 82°F; July is the coldest (18°C / 64°F). June is the wettest month, averaging 123 mm / 4.8 in of precipitation.
| Month | High °C / °F | Low °C / °F | Precip mm / in | Wet days |
|---|---|---|---|---|
| Jan | 28 / 82 | 20 / 68 | 80 / 3.1 | 8 |
| Feb | 27 / 81 | 20 / 68 | 117 / 4.6 | 9 |
| Mar | 26 / 78 | 19 / 65 | 95 / 3.7 | 9 |
| Apr | 23 / 74 | 15 / 59 | 96 / 3.8 | 8 |
| May | 21 / 69 | 12 / 54 | 90 / 3.5 | 8 |
| Jun | 18 / 65 | 10 / 50 | 123 / 4.8 | 9 |
| Jul | 18 / 64 | 9 / 47 | 72 / 2.8 | 7 |
| Aug | 19 / 66 | 9 / 49 | 63 / 2.5 | 5 |
| Sep | 22 / 71 | 12 / 53 | 58 / 2.3 | 6 |
| Oct | 24 / 74 | 14 / 58 | 56 / 2.2 | 8 |
| Nov | 25 / 76 | 17 / 62 | 72 / 2.8 | 9 |
| Dec | 26 / 80 | 18 / 65 | 67 / 2.6 | 8 |
Extremes since 1750: highest 46°C / 116°F (January 18, 2013), lowest 0°C / 32°F (July 23, 1943).
Daylight lasts about 14.3 hours in December and 9.7 hours in June.
Data: Meteostat — Sydney Airport, 1991–2020 averages.
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