Late May and June, then September into early October, suit most trips to Naples. Walking is comfortable, the days are long, and the sea warms up for a swim by June.
Each shoulder has a catch. The sea is still cool in May, and October brings back real rain, with 5 inches over the month.
At a glance
- Best window for sightseeing: May, June, September and early October
- Warmest month: August, high of 88°F (31°C)
- Driest month: July, 1 inch of rain over 2 rainy days
- Wettest month: November, 6 inches of rain over 10 rainy days
- Warmest sea: August, 79°F
- Festival season: June to mid-October
When is the best time to visit Naples?
For most travelers, the best months are May, June, September and early October. Days are warm without being hot, and the sun shines for 8 hours a day in May and 9 in June. Rain stays modest until October.
The beach window runs from June to October. The sea reaches 73°F in June and peaks at 79°F in August. September is still warm at 76°F, and by October the water has eased to 71°F.
Sightseeing on foot is easiest in May and June, or in September. Highs are 75°F (24°C) in May and 80°F (27°C) in September. July and August push the afternoon high to 87°F (31°C) or more, so plan museums and churches for the middle of the day and walks for early morning or evening. The Great Cono trail on Vesuvius takes up to 2 hours round trip on the shortest route and 3 hours on the longest, so a dry day in these months is the one to pick.
- If you want the beach: June to October, with the warmest water in August
- For sightseeing or walking: May, June, September and early October
- For a festival trip: June to mid-October, with the San Gennaro Mass on September 19 in 2026
Naples weather by month
| Month | Average high | Average low | Rain | Rainy days | Sunshine per day | Sea |
|---|---|---|---|---|---|---|
| January | 56°F (13°C) | 41°F (5°C) | 3.6 in (92 mm) | 9 | 3.7 h | 59°F (15°C) |
| February | 57°F (14°C) | 41°F (5°C) | 3.8 in (95 mm) | 9 | 4.5 h | 58°F (14°C) |
| March | 62°F (16°C) | 45°F (7°C) | 3.1 in (78 mm) | 9 | 5.1 h | 58°F (14°C) |
| April | 67°F (19°C) | 50°F (10°C) | 3.9 in (99 mm) | 9 | 6.3 h | 60°F (16°C) |
| May | 75°F (24°C) | 58°F (14°C) | 2.3 in (59 mm) | 6 | 7.9 h | 66°F (19°C) |
| June | 82°F (28°C) | 65°F (18°C) | 1.3 in (33 mm) | 3 | 9.3 h | 73°F (23°C) |
| July | 87°F (30°C) | 70°F (21°C) | 1.1 in (29 mm) | 2 | 10.1 h | 77°F (25°C) |
| August | 88°F (31°C) | 71°F (21°C) | 1.4 in (36 mm) | 4 | 9.5 h | 79°F (26°C) |
| September | 80°F (27°C) | 64°F (18°C) | 3.5 in (89 mm) | 6 | 7.8 h | 76°F (24°C) |
| October | 73°F (23°C) | 57°F (14°C) | 5.3 in (136 mm) | 9 | 6.1 h | 71°F (22°C) |
| November | 65°F (18°C) | 49°F (10°C) | 6.0 in (152 mm) | 10 | 4.2 h | 67°F (19°C) |
| December | 58°F (14°C) | 43°F (6°C) | 4.4 in (112 mm) | 10 | 3.4 h | 62°F (17°C) |
*Long-term monthly averages.*
The year runs from a mild, damp winter to a hot, dry summer, with a wet autumn that arrives in October.
Three months tip the year. July is the driest, with 2 rainy days and 10 hours of sun. August is the hottest, with a low of 71°F (21°C) at night. November is the wettest, with 10 rainy days.
November is the hard month for anyone planning long days outdoors. It rains on 10 days, the sun shows for only 4 hours a day, and highs sit at 65°F (18°C). Museums and covered galleries suit those days, such as Castel Nuovo with its civic museum and Gallerie d’Italia.
When can you swim in Naples?
The sea passes 68°F (20°C) from June to October. May, at 66°F, and November, at 67°F, stay just below that mark, so those months suit a quick dip at best.
These are monthly averages.
When is Naples cheapest and least crowded?
The festival calendar sets the lively months. The city describes its tourism as constantly growing, so booking rooms ahead for summer and for festival weekends is sensible.
Winter has a cost. Sunshine falls to 3 or 4 hours a day from November to February, and 9 or 10 days a month are rainy. Boat trips still run, though. SNAV hydrofoils to Procida leave daily all year round.
November is the month to skip for a first visit. A winter visit to museums and indoor sights is a better fit.
Festivals and events in Naples through the year
Patron saint festivals, June to October
They include solemn masses, processions, concerts and shows in churches, squares and streets.
The calendar opens on June 1 at 9 p.m. with the Festa di Sant’Erasmo. It closes on October 17 with the Festa di San Gaetano Errico, at 8 p.m. in Secondigliano. The Festa del Carmine falls on July 15 at 9 p.m. in Piazza del Carmine. These festivals are free.
Estate a Napoli, July to early October
It falls in the stretch when July highs reach 87°F (30°C) and the month has only 2 rainy days.
Its dates overlap the swimming season from June to October, which makes July, August and September the months that combine sea, sun and events.
Sources
- open-meteo.com (https://open-meteo.com/en/docs/historical-weather-api), checked 2026-10-30
- comune.napoli.it (https://www.comune.napoli.it/novita/presentato-programma-feste-patronali/), checked 2026-10-30
- snav.it (https://www.snav.it/en/destinations/ischia-2/procida-casamicciola-2), checked 2026-10-30
- parconazionaledelvesuvio.it (https://www.parconazionaledelvesuvio.it/en/visit-the-park/the-paths/the-great-cono-of-vesuvius/), checked 2026-10-30
- ambwashingtondc.esteri.it (https://ambwashingtondc.esteri.it/en/chi-siamo/gli-uffici/), checked 2026-10-25
- comune.napoli.it (https://www.comune.napoli.it/tipi_evento/raduno-di-comunita/), checked 2026-10-30
- comune.napoli.it (https://www.comune.napoli.it/maschioangioino), checked 2026-10-30
- open-meteo.com (https://open-meteo.com/en/docs/marine-weather-api), checked 2026-10-30