Castel Gandolfo Weather in September

September in Castel Gandolfo averages 26°C (79°F) during the day and 17°C (63°F) at night. Quite a bit of rainfall is typical this month, with around 98 mm (3.9 in) on average. An umbrella is a good idea.

Rainfall in Castel Gandolfo in September

You can typically expect 9 days of rain this month, averaging around 98 mm (3.9 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Castel Gandolfo in September

The temperature in Castel Gandolfo in September is perfect. Daytime highs reach 26°C (79°F), with nights dropping to 17°C (63°F). Overall, the month follows a fairly predictable daily temperature pattern. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Castel Gandolfo in September

With approximately 237 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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• January
• February
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• May
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For a detailed overview over the year and the best time to visit Italy, check out our Castel Gandolfo's climate page.

Castel Gandolfo Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 30%  

Precipitation 98 mm (3.9 in)  

Rainy days 9 days  

Humidity 75% *  

Sunshine 237 hours *  

Percentage Sunshine *  

* Data from: Rome, Italy (35 KM, 21 Miles).

What to Wear in Castel Gandolfo in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Castel Gandolfo 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

8/10

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 Gandolfo's climate page.

More climate data for Castel Gandolfo

Temperature Rainfall Sunshine Humidity

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