Block Island weather in March 2025

Expect 7°C 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.

  • 7°C maximum daytime temperature in March in Block Island7
    7°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in March in Block Island11
    11 days with some rainfall
  • -1°C minimum night-time temperature in March in Block Island-1
    -1°C 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
  • 113 mm monthly rainfall in March in Block Island113
    113 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in March in Block Island4
    4 (Moderate) UV index
  • 4°C sea temperature in March in Block Island4
    4°C sea temperature

More about Block Island

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