Chatham weather in October 2025

Expect 61°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Chatham in October. Check more long-term weather averages for Chatham in October before you book your next holiday to Massachusetts in 2025/2026.

  • 61°F maximum daytime temperature in October in Chatham61
    61°F max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in October in Chatham9
    9 days with some rainfall
  • 48°F minimum night-time temperature in October in Chatham48
    48°F min night temperature
  • 11 hours of daylight per day in October in Chatham11
    11 hours of daylight per day
  • No heat & humidity in October in Chatham0
    No heat & humidity
  • 3.5 inches monthly rainfall in October in Chatham3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Chatham4
    4 (Moderate) UV index
  • 55°F sea temperature in October in Chatham55
    55°F sea temperature

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The October weather guide for Massachusetts (Chatham) 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)  |  Imperial (°F)

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More about the USA

How warm is it in Chatham in October?

Daytime temperatures usually reach 61°F in Chatham in October, falling to 48°F at night.

How sunny is it in Chatham in October?

There are normally 7 hours of bright sunshine each day in Chatham in October - that's 60% of daylight hours.

How warm is the sea around Chatham in October?

The average sea temperature around Chatham in October is 55°F.

Does it rain in Chatham in October?

There are usually 9 days with some rain in Chatham in October and the average monthly rainfall is 3.5 inches.

Chatham October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:37 17:21
Thursday, 16th October 2025 05:53 16:57
Friday, 31st October 2025 06:11 16:35

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