Siena weather by month
The best time to visit Siena, Italy is June. Pick a month for full climate normals and a verdict.
- Januarycold, a little rain, clean air66tier C
- Februarycool, a little rain, clean air73tier B
- Marchcool, a little rain, clean air79tier B
- Aprilnice, a little rain, clean air82tier A
- Maynice, rainy, clean air89tier A
- Junewarm, a little rain, clean air92tier S
- Julyhot, dry, clean air86tier A
- Augusthot, a little rain, clean air85tier A
- Septemberwarm, rainy, clean air91tier S
- Octobernice, rainy, clean air83tier A
- Novembercool, rainy, clean air68tier C
- Decembercool, rainy, clean air63tier C