Michigan weather in August 2025

Expect 81°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Michigan in August. Check more long-term weather averages for Michigan in August before you book your next holiday to Michigan in 2025/2026.

  • 81°F maximum daytime temperature in August in Michigan (Detroit)81
    81°F max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in August in Michigan (Detroit)9
    9 days with some rainfall
  • 63°F minimum night-time temperature in August in Michigan (Detroit)63
    63°F min night temperature
  • 14 hours of daylight per day in August in Michigan (Detroit)14
    14 hours of daylight per day
  • Moderate heat & humidity in August in Michigan (Detroit)M
    Moderate heat & humidity
  • 3.2 inches monthly rainfall in August in Michigan (Detroit)3.2
    3.2 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Michigan (Detroit)8
    8 (Very High) UV index
  • 73°F sea temperature in August in Michigan (Detroit)73
    73°F sea temperature

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The August weather guide for Michigan (Detroit) 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.

Top Michigan destinations

Below are average maximum temperatures at popular countries, regions and places in Michigan in August. Select a holiday destination to see more weather parameters.

All Michigan destinations

Metric (°C)  |  Imperial (°F)

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More about the USA

How hot is it in Michigan in August?

Daytime temperatures usually reach 81°F in Detroit, Michigan in August with moderate heat and humidity, falling to 63°F at night.

How sunny is it in Michigan in August?

There are normally 8 hours of bright sunshine each day in Detroit, Michigan in August - that's 61% of daylight hours.

How warm is the sea around Michigan in August?

The average sea temperature around Detroit, Michigan in August is 73°F.

Does it rain in Michigan in August?

There are usually 9 days with some rain in Detroit, Michigan in August and the average monthly rainfall is 3.2 inches.

Michigan August sunrise & sunset times

Browse the sunrise and sunset times for Michigan in August 2025. Select a month to view Michigan sunrise and sunset times for the next 12 months. The Michigan sunrise and sunset times shown below are for Detroit.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:25 19:51
Saturday, 16th August 2025 05:41 19:31
Sunday, 31st August 2025 05:57 19:07

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