Best time to visit Isle Royale

Q: When is the best time to visit Isle Royale?

The best time to visit Isle Royale is July based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: Which is the hottest month in Isle Royale?

The hottest time of year in Isle Royale is normally July. Expect maximum daytime temperatures to reach 24°C.

Q: Which month has the most rain in Isle Royale?

In terms of rainfall, September is usually the wettest month in Isle Royale with 86mm on average. There are normally 13 days in September with some rain.

Q: When is it sunniest in Isle Royale?

The sunniest time of year in Isle Royale is normally July with bright sunshine on average for 62% of daylight hours; that's 10 hours of sunshine per day.

Q: When is the sea warmest in Isle Royale?

The sea is usually at its warmest in Isle Royale in August when the water temperature reaches 13°C.

Find the best time to visit Isle Royale and plan your perfect trip in 2024/2025. Get holiday inspiration, weather guides, travel advice and find great deals.

Isle Royale by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Michigan

Holiday Autos discount code: up to 10% off global car hire

Exclusive

Save up to 10% on cheap car hire worldwide
Exclusive Holiday Autos discount code automatically applied
Travel before 31st December 2024 (inclusive)

Show discount code

******vel

Redeem Holiday Autos discount code >>

Expires at 23:59 on Tuesday 31st Dec 2024 · View all Holiday Autos offers

Car hire finder

Destination

When is the best time to visit Isle Royale?

The best time to visit Isle Royale is July based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0.5
Jan
1
Feb
1
Mar
1.5
Apr
2
May
4
Jun
5
Jul
4
Aug
1.5
Sep
0.5
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°F)

18
Jan
21
Feb
32
Mar
46
Apr
59
May
68
Jun
75
Jul
72
Aug
63
Sep
52
Oct
36
Nov
23
Dec

Hours of Sunshine (daily)

4
Jan
5
Feb
5
Mar
7
Apr
8
May
9
Jun
10
Jul
8
Aug
6
Sep
4
Oct
3
Nov
3
Dec

Which is the hottest month in Isle Royale?

The hottest time of year in Isle Royale is normally July. Expect maximum daytime temperatures to reach 75°F.

Which month has the most rain in Isle Royale?

In terms of rainfall, September is usually the wettest month in Isle Royale with 3.4 inches on average. There are normally 13 days in September with some rain.

When is it sunniest in Isle Royale?

The sunniest time of year in Isle Royale is normally July with bright sunshine on average for 62% of daylight hours; that's 10 hours of sunshine per day.

When is the sea warmest in Isle Royale?

The sea is usually at its warmest in Isle Royale in August when the water temperature reaches 55°F.