Boston weather in October 2025

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

  • 17°C maximum daytime temperature in October in Boston17
    17°C max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in October in Boston9
    9 days with some rainfall
  • 6°C minimum night-time temperature in October in Boston6
    6°C min night temperature
  • 11 hours of daylight per day in October in Boston11
    11 hours of daylight per day
  • No heat & humidity in October in Boston0
    No heat & humidity
  • 87 mm monthly rainfall in October in Boston87
    87 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Boston4
    4 (Moderate) UV index
  • 13°C sea temperature in October in Boston13
    13°C sea temperature

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The October weather guide for Massachusetts (Boston) 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 Boston in October?

Daytime temperatures usually reach 17°C in Boston in October, falling to 6°C at night.

How sunny is it in Boston in October?

There are normally 7 hours of bright sunshine each day in Boston in October - that's 59% of daylight hours.

How warm is the sea around Boston in October?

The average sea temperature around Boston in October is 13°C.

Does it rain in Boston in October?

There are usually 9 days with some rain in Boston in October and the average monthly rainfall is 87mm.

Boston October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:42 17:25
Thursday, 16th October 2025 05:59 17:00
Friday, 31st October 2025 06:17 16:38

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