Rockland weather in May 2025

Expect daytime maximum temperatures of 18°C in Rockland, Maine in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 96 mm of rainfall in the month.

  • 18°C maximum daytime temperature in May in Rockland18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in May in Rockland12
    12 days with some rainfall
  • 7°C minimum night-time temperature in May in Rockland7
    7°C min night temperature
  • 15 hours of daylight per day in May in Rockland15
    15 hours of daylight per day
  • No heat & humidity in May in Rockland0
    No heat & humidity
  • 96 mm monthly rainfall in May in Rockland96
    96 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Rockland6
    6 (High) UV index
  • 7°C sea temperature in May in Rockland7
    7°C sea temperature

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The May weather guide for Maine (Rockland) 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 Rockland in May?

Daytime temperatures usually reach 18°C in Rockland in May, falling to 7°C at night.

How sunny is it in Rockland in May?

There are normally 7 hours of bright sunshine each day in Rockland in May - that's 49% of daylight hours.

Is the sea cold around Rockland in May?

The average sea temperature around Rockland in May is 7°C.

Does it rain in Rockland in May?

There are usually 12 days with some rain in Rockland in May and the average monthly rainfall is 96mm.

Rockland May sunrise & sunset times

Browse the sunrise and sunset times for Rockland in May 2025. Select a month to view Rockland sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:27 18:40
Friday, 16th May 2025 04:09 18:58
Saturday, 31st May 2025 03:57 19:12

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