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Grand Marais weather in August 2025
Expect 23°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Grand Marais in August. Check more long-term weather averages for Grand Marais in August before you book your next holiday to Michigan in 2025/2026.
- 2323°C max day temperature
- 8 hours of sunshine per day
- 1212 days with some rainfall
- 1111°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 8888 mm of monthly rainfall
- 77 (High) UV index
- 1515°C sea temperature
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Grand Marais by month
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Recommended for Michigan
The August 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)
More about the USA
How hot is it in Grand Marais in August?
Daytime temperatures usually reach 23°C in Grand Marais in August, falling to 11°C at night.
How sunny is it in Grand Marais in August?
There are normally 8 hours of bright sunshine each day in Grand Marais in August - that's 57% of daylight hours.
How warm is the sea around Grand Marais in August?
The average sea temperature around Grand Marais in August is 15°C.
Does it rain in Grand Marais in August?
There are usually 12 days with some rain in Grand Marais in August and the average monthly rainfall is 88mm.
Grand Marais August sunrise & sunset times
Browse the sunrise and sunset times for Grand Marais in August 2025. Select a month to view Grand Marais sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 05:25 | 20:15 |
Saturday, 16th August 2025 | 05:44 | 19:52 |
Sunday, 31st August 2025 | 06:03 | 19:24 |
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