Nantucket weather in May 2025

Expect 16°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Nantucket in May. Check more long-term weather averages for Nantucket in May before you book your next holiday to Massachusetts in 2025/2026.

  • 16°C maximum daytime temperature in May in Nantucket16
    16°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Nantucket11
    11 days with some rainfall
  • 9°C minimum night-time temperature in May in Nantucket9
    9°C min night temperature
  • 15 hours of daylight per day in May in Nantucket15
    15 hours of daylight per day
  • No heat & humidity in May in Nantucket0
    No heat & humidity
  • 81 mm monthly rainfall in May in Nantucket81
    81 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Nantucket7
    7 (High) UV index
  • 9°C sea temperature in May in Nantucket9
    9°C sea temperature

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The May weather guide for Massachusetts (Nantucket) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the USA

How warm is it in Nantucket in May?

Daytime temperatures usually reach 16°C in Nantucket in May, falling to 9°C at night.

How sunny is it in Nantucket in May?

There are normally 8 hours of bright sunshine each day in Nantucket in May - that's 56% of daylight hours.

Is the sea cold around Nantucket in May?

The average sea temperature around Nantucket in May is 9°C.

Does it rain in Nantucket in May?

There are usually 11 days with some rain in Nantucket in May and the average monthly rainfall is 81mm.

Nantucket May sunrise & sunset times

Browse the sunrise and sunset times for Nantucket in May 2025. Select a month to view Nantucket sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:38 18:38
Friday, 16th May 2025 04:21 18:54
Saturday, 31st May 2025 04:10 19:07

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