Italy Florence Weather in September — Climate Guide
September in Florence is very-high
September is very-high for Florence.
Best month for Florence. Cooling + Tuscan grape harvest + Chianti wine tours peak. Lower than July-August crowds.
Travel score
Florence September Weather Stats
Avg High
26°C
Avg Low
14°C
Rainy Days
8
75mm total
Sunshine
7h
Daily avg
Humidity
65%
moderate
UV Index
5
Moderate
Wind
7 km/h
Gusts 20
Sea Temp
22°C
swimming possible
Crowds
Very busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
20 μg/m³
PM10
35 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
26°C
Nighttime
13°C
Humidity and wind affect how the actual temperature feels.
Wind
7 km/h
Max gust 20 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- 26/14°C ideal
- Wine harvest season
- Tourist crowds dropping
- Tuscan tours peak
Cons
- Rain 8 days/month
- Korean Chuseok airfare spike
- Hotels still elevated
September Events & Festivals
- Wine harvest (Vendemmia, late September)
- Korean Chuseok
Florence in September — Full Picture
Best month for Florence. Cooling + Tuscan grape harvest + Chianti wine tours peak. Lower than July-August crowds.
What to Wear & What to Pack
Early autumn. Day 26°C tee, evening 14°C cardigan.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
18.7°C
8.3°C
9.3/mo
Summer (Jun·Jul·Aug)
29.7°C
17.3°C
6.3/mo
Autumn (Sep·Oct·Nov)
Current20.3°C
10°C
9.7/mo
Winter (Dec·Jan·Feb)
11°C
2.7°C
9.3/mo
Florence Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 10° | 2° | 9d·65mm | 3h | 79% | 1 | Quiet | Peak | |
| 12° | 3° | 9d·70mm | 4h | 76% | 2 | Quiet | Shoulder | |
| 15° | 5° | 9d·75mm | 5h | 70% | 3 | Moderate | Shoulder | |
| April (Best) | 18° | 8° | 10d·75mm | 6h | 65% | 4 | Busy | Peak |
| May (Best) | 23° | 12° | 9d·65mm | 7h | 65% | 6 | Very busy | Peak |
| June (Best) | 27° | 16° | 7d·50mm | 9h | 60% | 7 | Very busy | Peak |
| 31° | 18° | 5d·35mm | 10h | 60% | 8 | Very busy | Peak | |
| 31° | 18° | 7d·50mm | 9h | 60% | 7 | Very busy | Peak | |
| September (Best) | 26° | 14° | 8d·75mm | 7h | 65% | 5 | Very busy | Peak |
| 21° | 10° | 10d·90mm | 5h | 73% | 3 | Busy | Shoulder | |
| 14° | 6° | 11d·110mm | 3h | 78% | 2 | Moderate | Shoulder | |
| 11° | 3° | 10d·80mm | 3h | 80% | 1 | Moderate | Shoulder |
View Other Months
Florence September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Florence?
Florence in September is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Florence in September?
Florence September averages a high of 26°C and a low of 14°C.
Does it rain much in Florence in September?
Florence September averages 75mm of rainfall over about 8 rainy days.
What should I wear in Florence in September?
Early autumn. Day 26°C tee, evening 14°C cardigan.
What time are sunrise and sunset in Florence in September?
Florence September sunrise is 06:45 and sunset is 19:25, with 12h 40min of daylight.
What's the air quality like in Florence in September?
Florence September air quality (AQI) averages 55, rated Moderate. PM2.5 averages 20μg/m³.
What activities are recommended in Florence in September?
In September, Florence is great for Uffizi + Accademia + Duomo Dome, Chianti harvest tours, Piazzale Michelangelo sunset.
Is September peak season in Florence?
Florence September crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Florence
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.