What is the weather like in Florence vs Siena in September?

In September, Florence averages 29°C high / 15°C low with about 94 mm of rain; Siena averages 25°C high / 15°C low with about 93 mm.

Florence vs Siena in September

Siena is the better pick in September — 90 vs 84 on SeasonMap's comfort score. Siena is warm, rainy, clean air, while Florence is hot, rainy, clean air.

Florence vs Siena — September climate, side by side

	🇮🇹 Florence	🇮🇹 Siena
Comfort score	84/100 (A)	90/100 (S)
Feels-like high	29°C	25°C
Avg high / low	29° / 15°	25° / 15°
Rainfall	94 mm	93 mm
Rainy days	9	9
Humidity	72%	71%
Air quality (AQI)	44	41

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

Month by month

Florence 🇮🇹 Italyhot, rainy, clean air · best May84
Siena 🇮🇹 Italywarm, rainy, clean air · best June90

Florence vs Siena in September — FAQ

Is September better in Florence or Siena?: Siena is the better pick in September — 90 vs 84 on SeasonMap's comfort score. Siena is warm, rainy, clean air, while Florence is hot, rainy, clean air.
What is the weather like in Florence vs Siena in September?: In September, Florence averages 29°C high / 15°C low with about 94 mm of rain; Siena averages 25°C high / 15°C low with about 93 mm.