Keller in September
7.7out of 10
Yes, a good time to go
Hot: daytime highs around 31°C. Some rain: about 6 rainy days.
31°CAvg high
20°CAvg low
6Rainy days (68 mm)
12:11 hDaylight
07:18Sunrise · 19:29 Sunset
Why this score
- Hot: daytime highs around 31°C
- Some rain: about 6 rainy days
What to wear and pack
- Light, breathable clothing
- Shorts or a light skirt
- Sunscreen, sunglasses and a hat
How reliable is the forecast?
Rain in September varies a lot between years (±3.5 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 | 14°C | 3°C | 62 mm | 7 | – | – | 7.0 |
| February | 17°C | 5°C | 68 mm | 7 | – | – | 7.3 |
| March | 21°C | 9°C | 94 mm | 9 | – | – | 7.7 |
| April | 25°C | 13°C | 96 mm | 8 | – | – | 7.9 |
| May | 29°C | 18°C | 129 mm | 11 | – | – | 7.4 |
| June | 33°C | 23°C | 83 mm | 8 | – | – | 6.9 |
| July | 35°C | 24°C | 45 mm | 6 | – | – | 6.7 |
| August | 35°C | 24°C | 50 mm | 5 | – | – | 6.7 |
| September | 31°C | 20°C | 68 mm | 6 | – | – | 7.7 |
| October | 26°C | 14°C | 94 mm | 7 | – | – | 8.1 |
| November | 20°C | 9°C | 80 mm | 6 | – | – | 7.8 |
| December | 15°C | 4°C | 77 mm | 7 | – | – | 7.0 |
Frequently asked questions
How hot is Keller in September?
Daytime highs average 31°C and nights about 20°C.
When is the best time to visit Keller?
The best months are October, April, November, March.