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Mackinac Island Weather

Mackinac Island 14 Days Forecast

29.04
wed

Day

41°F

SE 9 mph

Precip.
0%

Night

34°F

SE 11 mph

Precip.
0%

30.04
thu

Day

39°F

SE 6 mph

Precip.
63%

Night

34°F

SE 12 mph

Precip.
0%

01.05
fri

Day

39°F

S 11 mph

Precip.
60%

Night

34°F

SE 11 mph

Precip.
0%

02.05
sat

Day

41°F

S 10 mph

Precip.
0%

Night

36°F

E 11 mph

Precip.
0%

03.05
sun

Day

45°F

SE 17 mph

Precip.
0%

Night

39°F

E 9 mph

Precip.
0%

04.05
mon

Day

46°F

E 11 mph

Precip.
0%

Night

45°F

NE 12 mph

Precip.
100%

05.05
tue

Day

41°F

SE 18 mph

Precip.
68%

Night

37°F

SE 12 mph

Precip.
0%

06.05
wed

Day

45°F

E 11 mph

Precip.
20%

Night

39°F

S 6 mph

Precip.
0%

07.05
thu

Day

43°F

SE 3 mph

Precip.
0%

Night

39°F

SE 13 mph

Precip.
0%

08.05
fri

Day

45°F

SE 13 mph

Precip.
25%

Night

41°F

SE 12 mph

Precip.
0%

09.05
sat

Day

46°F

E 9 mph

Precip.
71%

Night

41°F

NE 5 mph

Precip.
0%

10.05
sun

Day

46°F

SE 1 mph

Precip.
0%

Night

46°F

NW 6 mph

Precip.
100%

11.05
mon

Day

46°F

NW 20 mph

Precip.
100%

Night

52°F

NW 17 mph

Precip.
100%

12.05
tue

Day

45°F

NE 19 mph

Precip.
100%

Night

46°F

NE 22 mph

Precip.
0%

sea water
temperature

Mackinac Island

monthly
weather

Mackinac Island

current
weather

Mackinac Island

7 days
forecast

Mackinac Island

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2026

2025

2024

The average sea water temperature in April of 2026 was 34.3°F. The highest and lowest sea temperatures during the month were 40.3°F and 32.7°F.

Show year:

2025

2024

2023

The average sea water temperature in May of 2025 was 43.7°F. The highest and lowest sea temperatures during the month were 50.0°F and 37.8°F.