Grand Marais weather in May 2025

Expect 16°C 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.

  • 16°C maximum daytime temperature in May in Grand Marais16
    16°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Grand Marais11
    11 days with some rainfall
  • 4°C minimum night-time temperature in May in Grand Marais4
    4°C 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
  • 73 mm monthly rainfall in May in Grand Marais73
    73 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Grand Marais6
    6 (High) UV index
  • 3°C sea temperature in May in Grand Marais3
    3°C 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 / mm)  |  Imperial (°F / inches)

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How warm is it in Grand Marais in May?

Daytime temperatures usually reach 16°C in Grand Marais in May, falling to 4°C 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.

Is the sea cold around Grand Marais in May?

The average sea temperature around Grand Marais in May is 3°C.

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 73mm.

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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