Massachusetts weather in July 2025

Expect 28°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Massachusetts in July based on long-term weather averages. There is usually 9 days with some rainfall and 75 mm of average monthly rainfall in July.

  • 28°C maximum daytime temperature in July in Massachusetts (Boston)28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in July in Massachusetts (Boston)9
    9 days with some rainfall
  • 17°C minimum night-time temperature in July in Massachusetts (Boston)17
    17°C min night temperature
  • 15 hours of daylight per day in July in Massachusetts (Boston)15
    15 hours of daylight per day
  • Moderate heat & humidity in July in Massachusetts (Boston)M
    Moderate heat & humidity
  • 75 mm monthly rainfall in July in Massachusetts (Boston)75
    75 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in July in Massachusetts (Boston)8
    8 (Very High) UV index
  • 18°C sea temperature in July in Massachusetts (Boston)18
    18°C sea temperature

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The July 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.

Top Massachusetts destinations

Below are average maximum temperatures at popular countries, regions and places in Massachusetts in July. Select a holiday destination to see more weather parameters.

All Massachusetts destinations

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

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How hot is it in Massachusetts in July?

Daytime temperatures usually reach 28°C in Boston, Massachusetts in July with moderate heat and humidity, falling to 17°C at night.

How sunny is it in Massachusetts in July?

There are normally 9 hours of bright sunshine each day in Boston, Massachusetts in July - that's 63% of daylight hours.

How warm is the sea around Massachusetts in July?

The average sea temperature around Boston, Massachusetts in July is 18°C.

Does it rain in Massachusetts in July?

There are usually 9 days with some rain in Boston, Massachusetts in July and the average monthly rainfall is 75mm.

Massachusetts July sunrise & sunset times

Browse the sunrise and sunset times for Massachusetts in July 2025. Select a month to view Massachusetts sunrise and sunset times for the next 12 months. The Massachusetts sunrise and sunset times shown below are for Boston.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:11 19:25
Wednesday, 16th July 2025 04:22 19:18
Thursday, 31st July 2025 04:36 19:04

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