Sydney weather in August
August in Sydney: cool, a little rain, with clean air — an excellent time to visit.
#7 of 12 months in Sydney · #204 of 604 destinations to visit in August · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Sydney climate normals — August
| Daytime high | 18°C / 64°F | 🙂 cool |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 43 mm / 1.7 in | 🌦 some rain |
| Rainy days | 6 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 9°C / 48°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 10.9 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 46 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Sydney in August — FAQ
- Is August a good time to visit Sydney?
- August in Sydney: cool, a little rain, with clean air — an excellent time to visit. It ranks #7 of 12 months for Sydney on SeasonMap's comfort score (85/100).
- What is the weather like in Sydney in August?
- In August, Sydney averages a daily high of 17.5°C and a low of 10°C, with about 42.5 mm of rain over roughly 5.8 rainy days.
- What is the air quality in Sydney in August?
- Sydney has a mean US Air Quality Index of about 46 in August.