Nantucket weather in October 2025

Expect 17°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Nantucket in October. Check more long-term weather averages for Nantucket in October before you book your next holiday to Massachusetts in 2025/2026.

  • 17°C maximum daytime temperature in October in Nantucket17
    17°C max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in October in Nantucket9
    9 days with some rainfall
  • 10°C minimum night-time temperature in October in Nantucket10
    10°C min night temperature
  • 11 hours of daylight per day in October in Nantucket11
    11 hours of daylight per day
  • No heat & humidity in October in Nantucket0
    No heat & humidity
  • 84 mm monthly rainfall in October in Nantucket84
    84 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Nantucket4
    4 (Moderate) UV index
  • 15°C sea temperature in October in Nantucket15
    15°C sea temperature

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The October 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 October?

Daytime temperatures usually reach 17°C in Nantucket in October, falling to 10°C at night.

How sunny is it in Nantucket in October?

There are normally 7 hours of bright sunshine each day in Nantucket in October - that's 61% of daylight hours.

How warm is the sea around Nantucket in October?

The average sea temperature around Nantucket in October is 15°C.

Does it rain in Nantucket in October?

There are usually 9 days with some rain in Nantucket in October and the average monthly rainfall is 84mm.

Nantucket October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:37 17:22
Thursday, 16th October 2025 05:54 16:58
Friday, 31st October 2025 06:11 16:37

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