Weather in Napoli for September 2025
In general, the average temperature in Napoli at the beginning of September is 29.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 25.1 °C by the end of September.
Napoli in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 123.3 mm.
Is September a good time to visit Napoli? check out the best time to travel to Napoli page.
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Napoli in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 29° | 3  29° | 4  29° | 5 30° | 6 30° | 7  30° |
| 8 30° | 9 29° | 10 29° | 11 28° | 12 28° | 13 28° | 14 27° |
| 15 27° | 16 27° | 17 26° | 18 26° | 19  25° | 20 26° | 21 26° |
| 22 26° | 23 25° | 24 25° | 25 25° | 26 25° | 27  26° | 28 26° |
| 29 24° | 30 25° |
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Temperatures trend during September in Napoli
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Sunny | 29° /22° | 5.3 mm | 7 | |
| 2 Sept. | Sunny | 29° /22° | 0 mm | 7 | |
| 3 Sept. | Partly cloudy | 29° /22° | 0 mm | 7 | |
| 4 Sept. | Moderate rain at times | 29° /22° | 1.5 mm | 7 | |
| 5 Sept. | Sunny | 30° /22° | 1.7 mm | 7 | |
| 6 Sept. | Sunny | 30° /22° | 0.3 mm | 8 | |
| 7 Sept. | Patchy rain possible | 30° /22° | 0.4 mm | 7 | |
| 8 Sept. | Partly cloudy | 30° /22° | 0.3 mm | 7 | |
| 9 Sept. | Patchy rain possible | 29° /22° | 6.7 mm | 7 | |
| 10 Sept. | Sunny | 29° /21° | 1 mm | 7 | |
| 11 Sept. | Sunny | 28° /21° | 0.6 mm | 7 | |
| 12 Sept. | Sunny | 28° /21° | 2.3 mm | 7 | |
| 13 Sept. | Sunny | 28° /20° | 2.7 mm | 7 | |
| 14 Sept. | Sunny | 27° /20° | 0.3 mm | 7 | |
| 15 Sept. | Partly cloudy | 27° /20° | 0 mm | 7 | |
| 16 Sept. | Partly cloudy | 27° /20° | 15.9 mm | 6 | |
| 17 Sept. | Moderate or heavy rain shower | 26° /20° | 13.6 mm | 6 | |
| 18 Sept. | Patchy rain possible | 26° /20° | 1.6 mm | 6 | |
| 19 Sept. | Overcast | 25° /20° | 1.6 mm | 6 | |
| 20 Sept. | Patchy rain possible | 26° /20° | 0.2 mm | 6 | |
| 21 Sept. | Partly cloudy | 26° /20° | 0.2 mm | 7 | |
| 22 Sept. | Sunny | 26° /19° | 0 mm | 7 | |
| 23 Sept. | Sunny | 25° /18° | 8.9 mm | 6 | |
| 24 Sept. | Patchy rain possible | 25° /18° | 1.2 mm | 6 | |
| 25 Sept. | Sunny | 25° /18° | 23.1 mm | 6 | |
| 26 Sept. | Sunny | 25° /19° | 9.5 mm | 6 | |
| 27 Sept. | Heavy rain at times | 26° /20° | 1.3 mm | 6 | |
| 28 Sept. | Partly cloudy | 26° /20° | 2.3 mm | 6 | |
| 29 Sept. | Sunny | 24° /19° | 10.9 mm | 6 | |
| 30 Sept. | Moderate rain at times | 25° /18° | 9.6 mm | 6 | |
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Guide for Napoli in September
In September, Naples, Italy experiences a transition from the warm summer weather to the cooler temperatures of autumn. At the beginning of the month, the weather in Naples is generally still quite warm, with average temperatures around 25° during the day and 17° at night.
The city continues to enjoy long, sunny days with minimal rainfall, making it an ideal time to explore the historic sites and beautiful coastline.
As the month progresses, the weather gradually begins to cool down. By the end of September, temperatures in Naples tend to decrease to around 22° during the day and 14° at night.
While the days remain pleasant for outdoor activities, the evenings become noticeably cooler, signaling the arrival of autumn.
Overall, September in Naples offers a delightful blend of summer and autumn weather, making it a great time to visit for those who enjoy milder temperatures and fewer crowds. Visitors can still enjoy the city's outdoor attractions and al fresco dining while experiencing the changing seasons.
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Napoli in September - FAQ
What to pack to Napoli in September?
As you prepare for your trip to Napoli in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Napoli, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
September rainfall patterns in Napoli
UV exposure in Napoli during September
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Where is Napoli?Get accurate weather forecasts for Napoli, located at latitude 40.852 and longitude 14.268. Stay updated with localized weather information tailored for Napoli.