Massachusetts weather in May 2021

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Below are average maximum temperatures at popular destinations in Massachusetts in May. Select a destination to see more weather parameters.

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The May weather guide for Massachusetts 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.

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How hot is it in Massachusetts in May?

Daytime temperatures usually reach 20°C in Boston, Massachusetts in May, falling to 9°C at night.

How sunny is it in Massachusetts in May?

There are normally 8 hours of bright sunshine each day in Boston, Massachusetts in May - that's 57% of daylight hours.

Is the sea cold around Massachusetts in May?

The average sea temperature around Boston, Massachusetts in May is 9°C.

Does it rain in Massachusetts in May?

There are usually 11 days with some rain in Boston, Massachusetts in May and the average monthly rainfall is 85mm.

Massachusetts sunrise & sunset times for May 2021

Browse the sunrise & sunset times for Massachusetts in May 2021. Select a month to view Massachusetts sunrise & sunset times for the next twelve months. The Massachusetts sunrise & sunset times shown below are for Boston.


Date Sunrise times Sunset times
Saturday, 1st May 2021 05:39 19:44
Sunday, 16th May 2021 05:22 20:00
Monday, 31st May 2021 05:10 20:14
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Metric (°C / mm)  |  Imperial (°F / inches)

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