Climate averages 1991–2020
Sydney weather
in August.
A mild, moderately wet month: the 10th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Sydney: daytime highs average 17.1°C and nights cool to about 9.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 53 mm of rain on roughly 6 days, which makes August a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 52 min on an average August day.
The nearest other city in this atlas is Central Coast (51 km away). In August its highs average 17.3°C, about as warm as Sydney, with 49 mm of rain.
Among the 32 cities listed in Australia, Sydney ranks 18th of 32 for the warmest August highs and 21st of 32 for the driest August (rainfall, lowest first). The mean August high of those 32 cities is 17.6°C; Sydney is 0.5°C cooler than that mean.
From August to September, average highs rise by 2.3°C to 19.4°C, and monthly rainfall falls from 53 mm to 50 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sydney climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.6°C19.5°C | 19.5°C | 73 | 9.3 | 14.114 h |
| February | 25.0°C19.5°C | 19.5°C | 93 | 10.5 | 13.313 h |
| March | 23.6°C18.2°C | 18.2°C | 81 | 11.7 | 12.312 h |
| April | 21.5°C15.3°C | 15.3°C | 77 | 10.5 | 11.311 h |
| May | 18.7°C12.4°C | 12.4°C | 79 | 9.6 | 10.410 h |
| June | 16.4°C10.4°C | 10.4°C | 97 | 10.1 | 9.910 h |
| July | 15.9°C9.1°C | 9.1°C | 56 | 7.8 | 10.110 h |
| August, selected | 17.1°C9.4°C | 9.4°C | 53 | 6.4 | 10.911 h |
| September | 19.4°C11.5°C | 11.5°C | 50 | 6.7 | 11.912 h |
| October | 21.3°C13.8°C | 13.8°C | 59 | 8.1 | 12.913 h |
| November | 22.6°C15.8°C | 15.8°C | 72 | 9.2 | 13.914 h |
| December | 24.2°C17.8°C | 17.8°C | 60 | 8.7 | 14.414 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Central Coast in AugustAustralia · 51 kmHigh 17.3°C · Low 10.9°C · 49 mm rain
- Wollongong in AugustAustralia · 68 kmHigh 16.6°C · Low 10.7°C · 63 mm rain
- Blue Mountains in AugustAustralia · 83 kmHigh 11.5°C · Low 1.8°C · 46 mm rain
- Newcastle, Australia in AugustAustralia · 117 kmHigh 17.4°C · Low 10.8°C · 56 mm rain
- Maitland in AugustAustralia · 130 kmHigh 18.2°C · Low 8.4°C · 31 mm rain
- Canberra in AugustAustralia · 247 kmHigh 11.4°C · Low 1.6°C · 49 mm rain
- Tuggeranong in AugustAustralia · 261 kmHigh 11.4°C · Low 1.6°C · 57 mm rain
- Coffs Harbour in AugustAustralia · 436 kmHigh 19.0°C · Low 11.7°C · 45 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sydney) is explained once on the Sydney year overview and on the Sources, method and limits page.