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San Gimignano Weather in September
San Gimignano in September sees high daytime temperatures of 26°C (79°F) and nighttime lows of 15°C (59°F). Rainfall is fairly high this month at around 107 mm (4.2 in), so pack a rain jacket to stay dry.
Rainfall in San Gimignano in September
Historically, the month has about 9 days of rain, averaging 107 mm (4.2 in) in total. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in San Gimignano in September
San Gimignano in September gets highs of 26°C (79°F) during the day and drops to 15°C (59°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 15°C (59°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in San Gimignano in September
Expect a lot of sunshine this month, with about 220 hours of sun. These sunny conditions add to the overall experience.Should you favor a climate that's both dry and comfortably warm, May and June typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
San Gimignano Temperature in September
Min Temperature
15°C (59°F)
Max Temperature
26°C (79°F)
Chance of Rain
30%
Precipitation
107 mm (4.2 in)
Rainy days
9 days
Sunshine
220 hours *
Percentage Sunshine
*
* Data from: Siena, Italy (29 KM, 18 Miles).
San Gimignano Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Gimignano - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Gimignano typically drop from around 28°C (82°F) at the start of September to approximately 24°C (75°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 17°C (63°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for San Gimignano in September
Browse day-by-day weather records for San Gimignano spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Gimignano historical weather extremes in September
Based on 50 years of weather observations in San Gimignano between 1976 and 2026, these are the recorded extremes.
- The hottest September day on record in San Gimignano reached 36°C (97°F) (September 1, 2024).
- On September 27, 2020, San Gimignano saw its coldest September day with temperatures maxing out at 15°C (59°F).
- The coldest night in September in San Gimignano was on September 29, 1977, with a minimum of 5°C (41°F).
Best Places in Italy in September
Find out more about the weather in Italy and which places have the best travel conditions in this month. See all of Italy in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San Gimignano in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in San Gimignano in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
San Gimignano 3-Day Forecast
More climate data for San Gimignano
See the full San Gimignano climate overview or explore weather in Italy.
Popular in September
Where to go in September - average daytime high across popular destinations.
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