Boundary Waters weather in August
Mild and comfortable, with some rainy days. Average highs of 23°C and lows of 15°C, with around 12 rainy days expected throughout the month.
While August isn't our top-rated month for Boundary Waters, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
23°C
Average low
15°C
Rainy days
12 days
Best months to visit
July
What to do in Boundary Waters in August
Whatever the weather, Boundary Waters rewards curious visitors. Here are some of the best ways to spend your time:
Canoe expedition: 7-10 day backcountry journey
Moose spotting: dawn and dusk wildlife watching
Fishing for northerns and walleye game fish
Camping on island shores: nights under stars
Portaging between lakes: traditional paddling routes
Winter: cross-country skiing and ice fishing options
What to pack for August
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
-9C
Cold, with occasional showers.
February
-9C
Cold, with occasional showers.
March
0C
Cold, with occasional showers.
April
6C
Cold, with some rainy days.
May
16C
Cool, with some rainy days.
June
22C
Mild and comfortable, with some rainy days.
Recommended
July
25C
Warm and pleasant, with some rainy days.
August (you are here)
23C
Mild and comfortable, with some rainy days.
September
19C
Mild and comfortable, with some rainy days.
October
10C
Cool, with some rainy days.
November
2C
Cold, with some rainy days.
December
-4C
Cold, with some rainy days.
Book your August trip to Boundary Waters
Find hotels, tours and experiences for the perfect escape.
