Boston weather in August 2026

Expect daytime maximum temperatures of 21°C in Boston, England in August based on long-term weather averages. There are 6 hours of sunshine per day on average with 13 days with some rainfall and typically 56 mm of rainfall in the month.

  • 21°C maximum daytime temperature in August in Boston21
    21°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in August in Boston13
    13 days with some rainfall
  • 11°C minimum night-time temperature in August in Boston11
    11°C min night temperature
  • 15 hours of daylight per day in August in Boston15
    15 hours of daylight per day
  • No heat & humidity in August in Boston0
    No heat & humidity
  • 56 mm monthly rainfall in August in Boston56
    56 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Boston5
    5 (Moderate) UV index

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The August weather guide for England (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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How hot is it in Boston in August?

Daytime temperatures usually reach 21°C in Boston in August, falling to 11°C at night.

How sunny is it in Boston in August?

There are normally 6 hours of bright sunshine each day in Boston in August - that's 39% of daylight hours.

Does it rain in Boston in August?

There are usually 13 days with some rain in Boston in August and the average monthly rainfall is 56mm.

Boston August sunrise & sunset times

Browse the sunrise and sunset times for Boston in August 2026. Select a month to view Boston sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st August 2026 04:18 19:54
Sunday, 16th August 2026 04:43 19:25
Monday, 31st August 2026 05:08 18:51

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