Siwei in September
8.1out of 10
Yes, a good time to go
Warm and comfortable: highs around 25°C. Some rain: about 7 rainy days.
25°CAvg high
15°CAvg low
7Rainy days (63 mm)
12:14 hDaylight
06:11Sunrise · 18:25 Sunset
Why this score
- Warm and comfortable: highs around 25°C
- Some rain: about 7 rainy days
What to wear and pack
- T-shirts and light layers
How reliable is the forecast?
Rain in September varies a lot between years (±3.2 rainy days), so check the forecast closer to your trip. 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 | 3°C | -7°C | 4 mm | 1 | – | – | 5.2 |
| February | 7°C | -4°C | 6 mm | 2 | – | – | 6.0 |
| March | 14°C | 2°C | 12 mm | 3 | – | – | 7.3 |
| April | 21°C | 9°C | 31 mm | 5 | – | – | 8.3 |
| May | 27°C | 15°C | 41 mm | 6 | – | – | 8.3 |
| June | 31°C | 20°C | 74 mm | 9 | – | – | 7.5 |
| July | 31°C | 22°C | 173 mm | 14 | – | – | 6.3 |
| August | 29°C | 21°C | 141 mm | 13 | – | – | 7.1 |
| September | 25°C | 15°C | 63 mm | 7 | – | – | 8.1 |
| October | 19°C | 8°C | 31 mm | 5 | – | – | 8.0 |
| November | 11°C | 0°C | 18 mm | 3 | – | – | 6.7 |
| December | 4°C | -5°C | 4 mm | 1 | – | – | 5.6 |
Frequently asked questions
How hot is Siwei in September?
Daytime highs average 25°C and nights about 15°C.
When is the best time to visit Siwei?
The best months are April, May, September, October.