Block Island weather in March 2025

Expect 45°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Block Island in March. Check more long-term weather averages for Block Island in March before you book your next holiday to Rhode Island in 2025/2026.

  • 45°F maximum daytime temperature in March in Block Island45
    45°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in March in Block Island11
    11 days with some rainfall
  • 30°F minimum night-time temperature in March in Block Island30
    30°F min night temperature
  • 12 hours of daylight per day in March in Block Island12
    12 hours of daylight per day
  • No heat & humidity in March in Block Island0
    No heat & humidity
  • 4.4 inches monthly rainfall in March in Block Island4.4
    4.4 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in March in Block Island4
    4 (Moderate) UV index
  • 39°F sea temperature in March in Block Island39
    39°F sea temperature

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The March weather guide for Rhode Island (Block Island) 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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How cold is it in Block Island in March?

Daytime temperatures usually reach 45°F in Block Island in March, falling to 30°F at night.

How sunny is it in Block Island in March?

There are normally 8 hours of bright sunshine each day in Block Island in March - that's 63% of daylight hours.

How warm is the sea around Block Island in March?

The average sea temperature around Block Island in March is 39°F.

Does it rain in Block Island in March?

There are usually 11 days with some rain in Block Island in March and the average monthly rainfall is 4.4 inches.

Block Island March sunrise & sunset times

Browse the sunrise and sunset times for Block Island in March 2025. Select a month to view Block Island sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st March 2025 06:20 17:38
Sunday, 16th March 2025 05:56 17:54
Monday, 31st March 2025 05:31 18:11

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