Sydney in September
7.0out of 10
Possible, with caveats
Mild: highs around 18°C. Frequent rain: about 10 rainy days.
18°CAvg high
13°CAvg low
10Rainy days (104 mm)
12:18 hDaylight
06:46Sunrise · 19:04 Sunset
Why this score
- Mild: highs around 18°C
- Frequent rain: about 10 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in September is fairly consistent from year to year (2.8 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -1°C | -7°C | 118 mm | 13 | – | – | 3.2 |
| February | -1°C | -8°C | 111 mm | 11 | – | – | 3.4 |
| March | 1°C | -5°C | 108 mm | 12 | – | – | 3.5 |
| April | 5°C | 0°C | 106 mm | 13 | – | – | 4.4 |
| May | 11°C | 4°C | 86 mm | 11 | – | – | 5.7 |
| June | 16°C | 10°C | 89 mm | 11 | – | – | 6.6 |
| July | 21°C | 15°C | 85 mm | 11 | – | – | 7.5 |
| August | 22°C | 16°C | 89 mm | 11 | – | – | 7.6 |
| September | 18°C | 13°C | 104 mm | 10 | – | – | 7.0 |
| October | 12°C | 8°C | 131 mm | 12 | – | – | 5.7 |
| November | 7°C | 3°C | 124 mm | 13 | – | – | 4.8 |
| December | 3°C | -2°C | 139 mm | 14 | – | – | 3.6 |
Frequently asked questions
How hot is Sydney in September?
Daytime highs average 18°C and nights about 13°C.
When is the best time to visit Sydney?
The best months are August, July, September.