Isernia Weather in September

September in Isernia averages 23°C (73°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 82 mm (3.2 in) on average. An umbrella is a good idea.

Rainfall in Isernia in September

Records from the past 30 years suggest around 8 days of rain, with 82 mm (3.2 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Isernia in September

Isernia has excellent weather in September, with days reaching 23°C (73°F) and nights cooling to 12°C (54°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Isernia in September

Enjoy a sunny month with about 215 hours of sunshine, the clear skies make Isernia even more beautiful.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Isernia.

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

Isernia Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 28%  

Precipitation 82 mm (3.2 in)  

Rainy days 8 days  

Humidity 66% *  

Sunshine 215 hours *  

Percentage Sunshine *  

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

What to Wear in Isernia in September

For Isernia in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Isernia in September

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

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

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 Isernia's climate page.

More climate data for Isernia

Temperature Rainfall Sunshine Humidity

See the full Isernia climate overview or explore weather in Italy.