Basel weather by month
The best time to visit Basel, Switzerland is September. Pick a month for full climate normals and a verdict.
- Januarycold, rainy, clean air53tier D
- Februarycold, a little rain, clean air65tier C
- Marchcold, a little rain, clean air72tier B
- Aprilcool, a little rain, clean air79tier B
- Maynice, rainy, clean air83tier A
- Junewarm, rainy90tier S
- Julywarm, rainy, clean air89tier A
- Augustwarm, rainy, clean air87tier A
- Septembernice, a little rain, clean air92tier S
- Octobernice, rainy, clean air75tier B
- Novembercold, rainy, clean air62tier C
- Decembercold, rainy, clean air52tier D