Grand Marais weather in May 2025

Expect 61°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Grand Marais in May. Check more long-term weather averages for Grand Marais in May before you book your next holiday to Michigan in 2025/2026.

  • 61°F maximum daytime temperature in May in Grand Marais61
    61°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Grand Marais11
    11 days with some rainfall
  • 39°F minimum night-time temperature in May in Grand Marais39
    39°F min night temperature
  • 15 hours of daylight per day in May in Grand Marais15
    15 hours of daylight per day
  • No heat & humidity in May in Grand Marais0
    No heat & humidity
  • 2.9 inches monthly rainfall in May in Grand Marais2.9
    2.9 inches of monthly rainfall
  • UV (maximum) index 6 (High) in May in Grand Marais6
    6 (High) UV index
  • 37°F sea temperature in May in Grand Marais37
    37°F sea temperature

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The May weather guide for Michigan (Grand Marais) 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 warm is it in Grand Marais in May?

Daytime temperatures usually reach 61°F in Grand Marais in May, falling to 39°F at night.

How sunny is it in Grand Marais in May?

There are normally 8 hours of bright sunshine each day in Grand Marais in May - that's 55% of daylight hours.

How warm is the sea around Grand Marais in May?

The average sea temperature around Grand Marais in May is 37°F.

Does it rain in Grand Marais in May?

There are usually 11 days with some rain in Grand Marais in May and the average monthly rainfall is 2.9 inches.

Grand Marais May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:29 19:54
Friday, 16th May 2025 05:08 20:13
Saturday, 31st May 2025 04:55 20:29

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