Casalnuovo di Napoli Weather in September

Casalnuovo di Napoli in September averages 26°C (79°F) during the day and 18°C (64°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Casalnuovo di Napoli in September

On average, there are about 9 days with rain during this month, averaging 100 mm (3.9 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Casalnuovo di Napoli in September

In September, Casalnuovo di Napoli gets high temperatures, with highs of 26°C (79°F). Nights cool to around 18°C (64°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 18°C (64°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 Casalnuovo di Napoli in September

The city usually sees around 234 hours of sunlight, indicating many sunny days — a great month for sightseeing.

Average water temperature in September

The water is 25°C (77°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July and August typically offer the best weather for Casalnuovo di Napoli.

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 Casalnuovo di Napoli's climate page.

Casalnuovo di Napoli Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 26°C (79°F)  

Water Temperature 25°C (77°F) *  

Chance of Rain 29%  

Precipitation 100 mm (3.9 in)  

Rainy days 9 days  

Humidity 73% *  

Sunshine 234 hours *  

Percentage Sunshine *  

* Data from: Naples, Italy (10 KM, 6 Miles).

What to Wear in Casalnuovo di Napoli 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. The water temperature sits at about 25°C (77°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Casalnuovo di Napoli 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 Casalnuovo di Napoli's climate page.

More climate data for Casalnuovo di Napoli

Temperature Rainfall Sunshine Humidity Water Temp

See the full Casalnuovo di Napoli climate overview or explore weather in Italy.