Summit in September
7.8out of 10
Yes, a good time to go
Warm and comfortable: highs around 24°C. Frequent rain: about 9 rainy days.
24°CAvg high
16°CAvg low
9Rainy days (102 mm)
12:15 hDaylight
06:44Sunrise · 18:59 Sunset
Why this score
- Warm and comfortable: highs around 24°C
- Frequent rain: about 9 rainy days
What to wear and pack
- T-shirts and light layers
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in September is fairly consistent from year to year (2.9 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 | 4°C | -4°C | 86 mm | 9 | – | – | 4.5 |
| February | 5°C | -3°C | 78 mm | 9 | – | – | 4.9 |
| March | 9°C | 1°C | 107 mm | 10 | – | – | 5.5 |
| April | 16°C | 7°C | 93 mm | 11 | – | – | 6.6 |
| May | 21°C | 13°C | 91 mm | 12 | – | – | 7.4 |
| June | 26°C | 18°C | 105 mm | 11 | – | – | 7.4 |
| July | 29°C | 21°C | 106 mm | 11 | – | – | 7.4 |
| August | 28°C | 20°C | 102 mm | 11 | – | – | 7.5 |
| September | 24°C | 16°C | 102 mm | 9 | – | – | 7.8 |
| October | 18°C | 10°C | 99 mm | 9 | – | – | 7.2 |
| November | 12°C | 4°C | 80 mm | 8 | – | – | 6.4 |
| December | 6°C | 0°C | 103 mm | 10 | – | – | 4.9 |
Frequently asked questions
How hot is Summit in September?
Daytime highs average 24°C and nights about 16°C.
When is the best time to visit Summit?
The best months are September, August, May, June.