March in Naples suits travelers who want sights and museums, with afternoons at 62°F (16°C) and the sea still too cold for most swimmers.
The catch is the weather: nights drop to 45°F (7°C), about nine days in the month bring rain, and the Vesuvius trails close automatically when an orange weather alert is issued.
At a glance
- Afternoon high: 62°F (16°C)
- Night low: 45°F (7°C)
- Rainy days: 9 in the month
- Sunshine: 5 hours a day
- Sea temperature: 58°F (14°C)
- Daylight on March 15: 11 hours 52 minutes
What is the weather like in Naples in March?
| Month | Average high | Average low | Rain | Rainy days | Sunshine per day | Sea |
|---|---|---|---|---|---|---|
| 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) |
*Long-term monthly averages.*
March in Naples is mild by day and cool at night. Afternoons reach 62°F (16°C), and the night low is 45°F (7°C). That’s comfortable for walking between museums and ruins without breaking a sweat.
Rain falls on about nine days, and the sun shines for around five hours a day on average. Plan outdoor sights like Herculaneum for the drier stretches, and keep the castle and museums for wet afternoons. Take a light jacket for the evening and a waterproof layer for the rest.
February is a little cooler, with afternoons near 57°F (14°C) and about the same number of rainy days. April warms to 67°F (19°C) and nights of 50°F (10°C), with about nine rainy days. March sits between the two. Daylight stretches from 10 hours 37 minutes in mid-February to nearly 12 hours in mid-March, so the days are long enough for a full outing.
What to do in Naples in March
Herculaneum on a dry March day
Herculaneum was buried by the eruption of Vesuvius in 79 A.D., and legend says Hercules founded it. It belongs to the same UNESCO World Heritage Site as Pompeii and Oplontis. The site is open air, so choose a day without rain.
If you hold a Campania Artecard PASS, including the LITE version, you can use it here. Go to the ticket office first to activate the card.
The Vesuvius Great Cono trail
The Great Cono is nature trail no. 5. It starts at the square at 3,281 feet (1,000 meters) above sea level in Ercolano. The round trip takes up to 2 hours on the shortest route and 3 hours on the longest. The high route on the crater summit is closed to visitors for safety and environmental protection.
From the square you can see the northern slope of Monte Somma, including Punta Nasone, the highest peak of the ancient volcano at 3,714 feet (1,132 meters). The trail is higher and cooler than the city, so take a layer. The ticket office and trail access close automatically on days of orange weather alerts or worse, so check the forecast the evening before.
Castel Nuovo and the city’s museums
Castel Nuovo, also called Maschio Angioino, is a castle, museum and picture gallery. It houses the Museo Civico and hosts exhibitions. The museum itinerary takes in the Sala dell’Armeria, the Cappella Palatina or di Santa Barbara, and the first and second floors of the southern curtain.
Two other indoor stops suit a rainy day. The Museo Archeologico Nazionale di Napoli (MANN) is at Piazza Museo 18/19. Gallerie d’Italia is at Via Toledo 177, where you can follow a physical or virtual audio guide through the app, or join a cultural mediator.
Pompeii by shuttle and themed itinerary
All the archaeological sites are connected by a shuttle service, Pompeii Artebus. That makes it easy to pair Pompeii with a second site in one day.
The thematic itineraries Civic Pompeii and Daily Pompeii last about 1.5 hours and cost €8 plus the entrance ticket. Either one gives a short, structured visit before the afternoon cools.
A hydrofoil day to Procida
SNAV hydrofoils connect Naples to Procida with daily departures all year round. SNAV boats also link Procida to Ischia, landing at the Casamicciola port.
Bring a windproof layer for the deck.
Is Naples busy in March?
Naples faces constantly growing tourism, and Herculaneum receives a large number of visitors every year.
The city expects more visitors, with 26 patron saint festivals this year. Booking your room early is still sensible, especially if your dates are fixed.
Tourist tax applies per person per night, up to a maximum of 14 consecutive days. It is due from non-residents over 14 staying in accommodation in Naples. The 2026 rates are €1 higher than the base values in force at the start of the year, so check the exact amount with your hotel.
Can you swim in Naples in March?
The sea near Naples averages 58°F (14°C) in March, the same as February. That’s a monthly average, and it’s cold for a swim. A quick dip is for the very hardy.
April brings the sea to 60°F (16°C), a small step up. March is better spent on sights and a boat day than on the beach.
What to pack for Naples in March
March asks for layers: mild afternoons, cool nights and regular rain.
- A warm layer for nights at 45°F (7°C)
- A light rain jacket for the nine rainy days
- Comfortable shoes with grip for the Vesuvius trail, which can take up to 3 hours round trip
- An extra layer for the trail start at 3,281 feet (1,000 meters)
- Earbuds and a charged phone for the Gallerie d’Italia audio guide through the app
- A windproof layer for the hydrofoil to Procida
What to know before visiting Naples in March
Check the forecast before heading up Vesuvius. On narrow stretches or ramps, hikers going uphill have priority over those coming down.
If you bring a Campania Artecard PASS to Herculaneum, activate it at the ticket office. Tourist tax applies per night for non-residents over 14, so budget for it on top of your room rate.
Is March a good time to visit Naples?
Yes, March is a good time to visit Naples for travelers who want ruins, museums and food, with comfortable temperatures for walking. It’s less suited to a beach trip.
April is warmer still, at 67°F (19°C), with a sea at 60°F (16°C).
For swimming, wait for April or later. For sightseeing, March works well, with Herculaneum, Pompeii and the Vesuvius trail all in reach. With children, the shorter itineraries are easier: Pompeii’s thematic walks last about 1.5 hours, and the museums offer cover when it rains.
Sources
- parconazionaledelvesuvio.it (https://www.parconazionaledelvesuvio.it/visita-il-parco/i-sentieri-del-vesuvio/il-gran-cono/), checked 2026-10-30
- 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/novita/napoli-aggiornate-le-tariffe-dellimposta-di-soggiorno-per-il-2026/), checked 2026-10-30
- comune.napoli.it (https://www.comune.napoli.it/maschioangioino), checked 2026-10-30
- comune.napoli.it (https://www.comune.napoli.it/novita/presentato-programma-feste-patronali/), checked 2026-10-30
- comune.napoli.it (https://www.comune.napoli.it/vivere-il-comune/eventi/secondigliano-tra-corti-e-cortili/), checked 2026-10-30
- snav.it (https://www.snav.it/en/destinations/ischia-2/procida-casamicciola-2), checked 2026-10-30
- open-meteo.com (https://open-meteo.com/en/docs/historical-weather-api), checked 2026-10-30