January · Italy
Best time to visit Siena in January Weather, crowds & prices
Weather in Siena in January
Average temperature 6°C, 56 mm of rain, about 20 days with 6+ hours of sunshine and 82% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
January score
6.6/10
Ranked #11 of 12 months
- Avg temp
- 6°C
- Rainfall
- 56 mm
- Humidity
- 82%
- Days with 6h+ sun
- 20
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $$ · Moderate Cost ($$)
January in Siena scores 6.6/10 for sightseeing and cultural travel - ranked #11 of 12. Expect around 6°C, 56 mm of rain, and roughly 20 days with 6+ hours of sunshine this month.
Siena's medieval center revolves around Piazza del Campo, framed by the Palazzo Pubblico and the Torre del Mangia.
January in Siena — middling scores, decent value
Expect 6°C (43°F) in January. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 56 mm of rain this month — a flexible day or two helps — with about 20 days with 6+ hours of sunshine and 9.4 hours of daylight to work around it.
That is 6.6/10 on the same scale — 11th of 12 months, versus 9.3/10 for the best month here.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Budget for mid-season pricing, and crowds are light for this destination.
If your dates are flexible, June is materially better in Siena — 2.7 points higher on the same scale.
Frequently asked
- What is the weather like in Siena in January?
- In January, Siena averages 6°C, 56 mm of rain, and about 20 days with 6+ hours of sunshine. Its climate-comfort score is 6.6/10.
- Is January a good time to visit Siena?
- January earns a 6.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Siena in January?
- Expect about 56 mm of rain in January. Average humidity is 82% and there are about 20 days with 6+ hours of sunshine.
Curated in Siena
Tickets & experiences
Things to do in Siena
Siena, Italy. Live activities and tours from GetYourGuide, matched to this destination.