SeasonMapNantucket weather in March
United States
March in Nantucket: cold, rainy, with clean air — a hit-or-miss time to visit.
#9 of 12 months in Nantucket · #1313 of 1383 destinations to visit in March · comfort 49/100 (tier F)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nantucket in March
Other months in Nantucket
Nantucket's forum rates July for warm, sunny days, with one recurring caveat worth knowing before booking a beach-heavy trip: the ocean itself stays genuinely chilly until August catches up, so swimming is more bracing than the air temperature would suggest. Regulars who want both warm water and warm air tend to point toward September instead.
Add your own note from Nantucket's card on the map.
Nantucket climate normals — March
| Daytime high | 8°C / 46°F | 🧥 cold |
|---|---|---|
| Nighttime low | 1°C / 33°F | |
| Feels like (high) | 3°C / 37°F | |
| Sea temperature | 5°C / 41°F | 🥶 cold sea |
| Rainfall | 90 mm / 3.5 in | 🌧 rainy |
| Rainy days | 7 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 0°C / 31°F | |
| Sunshine | 8 h/day | |
| Daylight | 12 h | |
| Wind | 42 km/h / 26 mph | |
| Snowfall | 7.2 cm / 2.8 in | |
| Air quality (US AQI) | 45 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Nantucket in March
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySpring break in United States(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Nantucket's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherNantucket's weather peaks June–August.
Best weatherFair weatherToughest weather
What's on in Nantucket in March
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Closure
Off-season shutdown
5 Jan – 10 Apr · usuallyMost restaurants, shops and hotels close for the winter and the ferry timetable thins to a handful of crossings. Ten thousand people live here in February against fifty thousand in August. Source ↗
- Hazard
Nor'easter season
1 Dec – 31 Mar · usuallyWind seasonClosuresWinter storms track up the coast and put the ferries and the flights on hold a day or two at a time, and take another few feet off the south-shore bluff while they are about it. Source ↗
Where is Nantucket?
Nantucket in March — FAQ
- Is March a good time to visit Nantucket?
- March in Nantucket: cold, rainy, with clean air — a hit-or-miss time to visit. It ranks #9 of 12 months for Nantucket on SeasonMap's comfort score (49/100).
- What is the weather like in Nantucket in March?
- In March, Nantucket averages a daily high of 7.9°C and a low of 0.8°C, with about 89.8 mm of rain over roughly 7.4 rainy days.
- What is the air quality in Nantucket in March?
- Nantucket has a mean US Air Quality Index of about 45 in March.
- Does it snow in Nantucket in March?
- Nantucket sees roughly 7.2 cm of snowfall in March.