What is the weather like in Rome vs Siena in December?

In December, Rome averages 14°C high / 5°C low with about 98 mm of rain; Siena averages 10°C high / 2°C low with about 85 mm.

Rome vs Siena in December

Rome is the better pick in December — 67 vs 61 on SeasonMap's comfort score. Rome is cool, rainy, muggy air, while Siena is cold, rainy, clean air.

Rome vs Siena — December climate, side by side

	Rome	Siena
Comfort score	67/100 (C)	61/100 (C)
Feels-like high	12°C	8°C
Avg high / low	14° / 5°	10° / 2°
Rainfall	98 mm	85 mm
Rainy days	10	10
Humidity	81%	87%
Air quality (AQI)	55	37

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Rome vs Siena in December — FAQ

Is December better in Rome or Siena?: Rome is the better pick in December — 67 vs 61 on SeasonMap's comfort score. Rome is cool, rainy, muggy air, while Siena is cold, rainy, clean air.
What is the weather like in Rome vs Siena in December?: In December, Rome averages 14°C high / 5°C low with about 98 mm of rain; Siena averages 10°C high / 2°C low with about 85 mm.