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Duluth weather in August 2025
Expect 24°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Duluth in August. Check more long-term weather averages for Duluth in August before you book your next holiday to Minnesota in 2025/2026.
- 24°C max day temperature
24 - 9 hours of sunshine per day
- 11 days with some rainfall
11 - 12°C min night temperature
12 - 14 hours of daylight per day
14 - No heat & humidity
0 - 100 mm of monthly rainfall
100 - 7 (High) UV index
7 - 16°C sea temperature
16
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Recommended for Minnesota
The August weather guide for Minnesota (Duluth) 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 Duluth in August?
Daytime temperatures usually reach 24°C in Duluth in August, falling to 12°C at night.
How sunny is it in Duluth in August?
There are normally 9 hours of bright sunshine each day in Duluth in August - that's 61% of daylight hours.
How warm is the sea around Duluth in August?
The average sea temperature around Duluth in August is 16°C.
Does it rain in Duluth in August?
There are usually 11 days with some rain in Duluth in August and the average monthly rainfall is 100mm.
Duluth August sunrise & sunset times
Browse the sunrise and sunset times for Duluth in August 2025. Select a month to view Duluth sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 04:49 | 19:40 |
| Saturday, 16th August 2025 | 05:08 | 19:16 |
| Sunday, 31st August 2025 | 05:27 | 18:49 |
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