Sydney Weather in August
In August, Sydney averages a high of 19°C (66°F) and a low of 10°C (50°F), from 55 years of daily records (1971–2026).
19°C
Average high
66°F
10°C
Average low
50°F
30°C
Record high
86°F · August 31, 1995
4°C
Record low
38°F · August 6, 1974
What August Is Like in Sydney
- 5 of the 10 warmest Augusts on record in Sydney have come since 2012.
- The coldest August reading, 4°C (38°F) on August 6, 1974, has not been matched in 52 years.
- The August heat record, 30°C (86°F) on August 31, 1995, has stood for 31 years.
- August in Sydney has become 0.8°C (1.4°F) warmer on average: the 2012–2026 average against 1970–1989.
At least 1 mm of rain falls on 19% of August days, and the month averages 81 mm in total.
Warmest: 2013 (21.1°C)Latest: 2026 (18.1°C)10-year averageLong-run average (18.8°C)
Look Up a Day in August
See the weather in Sydney on any August date, year by year.
Source: NOAA GHCN-Daily, Sydney (Observatory Hill) (1971–2020); Sydney Harbour (Wedding Cake W (2020–2026). Averages cover 1971–2026. How we compute this