Bar Harbor weather in May 2025

Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Bar Harbor in May. Check more long-term weather averages for Bar Harbor in May before you book your next holiday to Maine in 2025/2026.

  • 18°C maximum daytime temperature in May in Bar Harbor18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 12 days with some rainfall in May in Bar Harbor12
    12 days with some rainfall
  • 6°C minimum night-time temperature in May in Bar Harbor6
    6°C min night temperature
  • 15 hours of daylight per day in May in Bar Harbor15
    15 hours of daylight per day
  • No heat & humidity in May in Bar Harbor0
    No heat & humidity
  • 106 mm monthly rainfall in May in Bar Harbor106
    106 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Bar Harbor6
    6 (High) UV index
  • 6°C sea temperature in May in Bar Harbor6
    6°C sea temperature

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The May weather guide for Maine (Bar Harbor) 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 Bar Harbor in May?

Daytime temperatures usually reach 18°C in Bar Harbor in May, falling to 6°C at night.

How sunny is it in Bar Harbor in May?

There are normally 7 hours of bright sunshine each day in Bar Harbor in May - that's 47% of daylight hours.

Is the sea cold around Bar Harbor in May?

The average sea temperature around Bar Harbor in May is 6°C.

Does it rain in Bar Harbor in May?

There are usually 12 days with some rain in Bar Harbor in May and the average monthly rainfall is 106mm.

Bar Harbor May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:23 18:37
Friday, 16th May 2025 04:04 18:55
Saturday, 31st May 2025 03:52 19:10

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