Castel San Gimignano Weather in September

During September, Castel San Gimignano experiences high daytime temperatures of 26°C (79°F) and cooler nights around 15°C (59°F). Expect quite a bit of rainfall. Around 106 mm (4.2 in) is typical.

Rainfall in Castel San Gimignano in September

Typically around 9 days of rainfall are expected, averaging 106 mm (4.2 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Castel San Gimignano in September

September in Castel San Gimignano brings high temperatures, with highs of 26°C (79°F) and nights around 15°C (59°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 15°C (59°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Castel San Gimignano in September

The city usually sees around 220 hours of sunlight, indicating many sunny days — a great month for sightseeing.

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.

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For a detailed overview over the year and the best time to visit Italy, check out our Castel San Gimignano's climate page.

Castel San Gimignano Temperature in September

Min Temperature 15°C (59°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 30%  

Precipitation 106 mm (4.2 in)  

Rainy days 9 days  

Sunshine 220 hours *  

Percentage Sunshine *  

* Data from: Siena, Italy (26 KM, 16 Miles).

What to Wear in Castel San Gimignano in September

Warm but pleasant conditions in Castel San Gimignano in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Castel San Gimignano in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Italy, check out our Castel San Gimignano's climate page.

More climate data for Castel San Gimignano

Temperature Rainfall Sunshine

See the full Castel San Gimignano climate overview or explore weather in Italy.