Monthly climate guide
Florence weather in September
September in Florence is typically warm, with average daytime highs around 24°C (75°F) and night-time lows near 13°C (55°F). The month usually brings about 63 mm of rain (some rain) and is a mix of sun and cloud. Daytime highs are 6°C cooler than August and 6°C warmer than October.
What stands out in September
- Good walking weather for combining Piazzale Michelangelo and Florence Cathedral (Duomo) in one day.
- Temperatures are falling — expect highs around 6°C lower by October.
- Florence is usually about 3°C cooler than Siena, 50 km away, in September.
- In Florence, September is early autumn.
Avg high
24°C
75°F
Avg low
13°C
55°F
Rainfall
63 mm
some rain
Humidity
70%
relative
Sky
47%
cloud · a mix of sun and cloud
Florence weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 6°C / 44°F | 0°C / 32°F | 51 mm | 90% | 65% |
| February | 7°C / 45°F | 0°C / 32°F | 78 mm | 88% | 64% |
| March | 11°C / 52°F | 2°C / 36°F | 68 mm | 82% | 58% |
| April | 16°C / 61°F | 6°C / 42°F | 53 mm | 77% | 60% |
| May | 20°C / 67°F | 9°C / 48°F | 67 mm | 75% | 61% |
| June | 26°C / 78°F | 14°C / 57°F | 44 mm | 65% | 41% |
| July | 30°C / 85°F | 16°C / 61°F | 39 mm | 58% | 30% |
| August | 30°C / 86°F | 17°C / 62°F | 35 mm | 58% | 28% |
| September | 24°C / 75°F | 13°C / 55°F | 63 mm | 70% | 47% |
| October | 18°C / 65°F | 9°C / 47°F | 84 mm | 80% | 56% |
| November | 12°C / 54°F | 5°C / 41°F | 96 mm | 90% | 66% |
| December | 8°C / 46°F | 1°C / 35°F | 57 mm | 90% | 61% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
Is September a good time to visit Florence?
Our Florence guide recommends: April to May or September to October — summer is hot and heavily crowded.
Reserve Uffizi Gallery tickets online — the walk-up queue routinely stretches for hours in high season.
Best time to visit Florence →Other Italy cities in September
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Florence weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/italy/florence/september
<a href="https://weathercompare.eu/weather/italy/florence/september">Florence weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/italy/florence" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Florence weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/italy/florence/september">Florence weather in September</a> – WeatherCompare</p>
Florence in September: quick answers
Is September a good time to visit Florence?
September is a reasonable time for Florence: highs around 24°C and about 63 mm of rain, though not one of the three best months.
How warm is Florence in September?
Average highs are about 24°C (75°F) and average lows about 13°C (55°F), based on 10 years of daily data.
Does it rain a lot in Florence in September?
Florence typically gets around 63 mm of rain in September — some rain.
When is the best time to visit Florence?
April to May or September to October — summer is hot and heavily crowded.
Figures are long-term averages for the area around Florence (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.