Siena Weather in January
9.4°C high · 2.6°C low · 59 mm rain · 2.6h sun
Jan is a cool month in Siena — not peak season, but a good time to avoid crowds.
January at a glance
| Metric | Value |
|---|---|
| Average high | 9.4°C |
| Average low | 2.6°C |
| Rainfall | 59 mm |
| Sunshine | 2.6 hours/day |
| Daylight | 9.1 hours |
What to pack in January
Pack a warm coat and layers for Siena in January.
Siena weather by month
JanFebMarAprMayJunJulAugSepOctNovDec
Frequently asked questions
What is the weather in Siena in January?
Highs of 9.4°C and lows of 2.6°C, with about 59 mm of rain and 2.6 hours of sunshine per day.
Is January a good time to visit Siena?
Jan is a cool month in Siena — not peak season, but a good time to avoid crowds.
What to do in Siena · Best time to visit Siena
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.