Sydney Climate — Average Highs, Lows & Rainfall by Month
Sydney has a temperate climate with four distinct seasons. Daytime temperatures average 26°C / 78°F in January, the warmest month, and drop to 17°C / 62°F in June, the coldest. Overnight lows in June average 8°C / 46°F. Sydney receives about 1185 mm of rain a year across roughly 139 wet days, with March the wettest month.
Averages for 2021–2025 · Open-Meteo Historical Weather API (ERA5 reanalysis) · Updated 2026-10-05
Monthly averages in Sydney
Average daytime high, overnight low and rainfall for each month of the year.
| Month | Avg high | Avg low | Rainfall | Wet days |
|---|---|---|---|---|
| January | 26°C / 78°F | 19°C / 66°F | 133 mm | 16 |
| February | 26°C / 78°F | 19°C / 66°F | 108 mm | 16 |
| March | 25°C / 77°F | 18°C / 65°F | 182 mm | 16 |
| April | 22°C / 72°F | 14°C / 57°F | 106 mm | 12 |
| May | 19°C / 67°F | 11°C / 52°F | 119 mm | 12 |
| June | 17°C / 62°F | 8°C / 46°F | 53 mm | 7 |
| July | 17°C / 62°F | 8°C / 47°F | 97 mm | 9 |
| August | 19°C / 65°F | 9°C / 49°F | 91 mm | 9 |
| September | 21°C / 71°F | 11°C / 52°F | 57 mm | 7 |
| October | 23°C / 73°F | 13°C / 56°F | 74 mm | 12 |
| November | 24°C / 74°F | 16°C / 60°F | 95 mm | 13 |
| December | 26°C / 78°F | 17°C / 63°F | 72 mm | 10 |
Best time to visit Sydney
September, December, October offer the most comfortable weather in Sydney: mild daytime temperatures with the year's lowest rainfall — September averages 21°C (71°F); December averages 26°C (78°F); October averages 23°C (73°F).
Sydney climate FAQ
- What is the hottest month in Sydney?
- January is the hottest month in Sydney, with average daytime highs of 26°C / 78°F and overnight lows of 19°C / 66°F (averages for 2021–2025).
- What is the coldest month in Sydney?
- June is the coldest month in Sydney, with average highs of 17°C / 62°F and lows of 8°C / 46°F.
- How much rain does Sydney get a year?
- Sydney receives about 1185 mm of rainfall a year, spread over roughly 139 wet days. March is the wettest month (182 mm on average) and June the driest (53 mm).
- When is the best time to visit Sydney?
- September, December, October are the most comfortable months in Sydney: mild daytime temperatures with the least rainfall of the year.
Want today's conditions instead of averages?
See live weather in Sydney →Source: Open-Meteo Historical Weather API (ERA5 reanalysis), Open-Meteo. Averages are daily means across 2021–2025 and are rounded for display — for a live forecast see the Sydney weather page.