World Resorts USA Mackinac Island Weather

Mackinac Island Sea Temperature in May

Average sea water temperature in May:
+42.8°F
Minimum sea water temperature in May: 52.5°F
Maximum sea water temperature in May: 36.1°F

Daily sea water temperature in May, °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.

Monthly sea water temperature in Mackinac Island, °F

Which USA resorts have warmest sea in May?

Place name May 2025 May 2024
Everglades 84.5°F 84.6°F
Key West 83.5°F 84.6°F
Naples 83.5°F 83.8°F
Marco Island 83.5°F 84.0°F
Key Largo 83.5°F 84.1°F
Sanibel Island 83.1°F 83.2°F
Tampa 82.7°F 82.5°F
Sarasota 82.7°F 82.9°F
St. Petersburg 82.6°F 82.4°F
Clearwater Beach 82.6°F 82.5°F
Miami 82.6°F 83.3°F
Siesta Key 82.5°F 82.6°F
Miami Beach 82.4°F 83.0°F
Fort Lauderdale 81.1°F 81.7°F
West Palm Beach 81.1°F 81.5°F
Corpus Christi 80.9°F 81.0°F
Gulfport 80.3°F 79.5°F
Pensacola 80.1°F 79.4°F
South Padre Island 80.0°F 81.1°F
Pass Christian 79.8°F 79.8°F

Best time for vacation in Mackinac Island

Sunniest months:
July 14 days
August 14 days
September 12 days
Warmest months:
August 69.4 °F
July 69.3 °F
September 62.9 °F
Warmest sea temp:
August 67.3 °F
July 65.1 °F
September 62.7 °F
Coldest months:
February 22.9 °F
January 23.4 °F
December 30.7 °F
Rainiest months:
August 3 days
May 2 days
July 2 days
Windiest months:
November 13.5 mph
December 13.2 mph
April 11.7 mph

Mackinac Island on a weather map

Mackinac Island
+25°F
N 7 mph
Feels like: +16°F
Precip.: 100%
Places in USA:
Name
°F
+19°F
+73°F
+73°F
+59°F
+64°F
+46°F
+54°F
+66°F
+10°F
+59°F
+57°F
+48°F
+45°F
+50°F
+28°F
24 Hours Forecast
Mackinac Island
Local time: 00:52
February 06, friday
0300
25°F
NE
5 mph
0600
27°F
SE
6 mph
0900
27°F
SE
8 mph
1200
25°F
S
24 mph
1500
18°F
S
22 mph
1800
9°F
S
19 mph
2100
3°F
S
15 mph
February 07, saturday
0000
1°F
S
12 mph
Units of measurement: °C / °F