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.

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Isle Royale by month

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

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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 [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 (°C)

-8
Jan
-6
Feb
0
Mar
8
Apr
15
May
20
Jun
24
Jul
22
Aug
17
Sep
11
Oct
2
Nov
-5
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 24°C.

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.

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 13°C.