World Resorts USA Duluth Weather

Duluth Sea Temperature in August

Average sea water temperature in August:
+65.8°F
Minimum sea water temperature in August: 71.4°F
Maximum sea water temperature in August: 53.2°F

Daily sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 67.5°F. The highest and lowest sea temperatures during the month were 71.1°F and 62.6°F.

Monthly sea water temperature in Duluth, °F

Which USA resorts have warmest sea in August?

Place name August 2025 August 2024
Sanibel Island 88.8°F 87.3°F
Everglades 88.8°F 87.0°F
Islamorada 88.8°F 87.3°F
Key West 88.8°F 87.8°F
Cape Coral 88.7°F 86.8°F
Key Largo 88.7°F 87.3°F
Marco Island 88.7°F 87.1°F
Naples 88.7°F 87.0°F
St. Petersburg 88.7°F 86.9°F
Tampa 88.6°F 86.4°F
Sarasota 88.6°F 87.2°F
Siesta Key 88.6°F 87.3°F
Clearwater Beach 88.5°F 87.0°F
Miami 88.1°F 86.4°F
Miami Beach 87.9°F 86.5°F
Galveston 87.9°F 88.3°F
Galveston Island 87.8°F 88.5°F
Houston 87.8°F 88.0°F
New Orleans 87.4°F 88.1°F
Fort Lauderdale 87.2°F 85.8°F

Best time for vacation in Duluth

Sunniest months:
September 14 days
August 13 days
July 12 days
Warmest months:
July 74.7 °F
August 73.8 °F
June 68.5 °F
Warmest sea temp:
August 65.9 °F
July 63.8 °F
September 62.4 °F
Coldest months:
January 18.5 °F
February 18.9 °F
December 25.2 °F
Rainiest months:
June 3 days
August 3 days
July 3 days
Windiest months:
April 8.9 mph
March 8.4 mph
November 8.3 mph

Duluth on a weather map

Duluth
+32°F
E 1 mph
Feels like: +28°F
Precip.: 73%
Places in USA:
Name
°F
+32°F
+72°F
+72°F
+45°F
+59°F
+64°F
+68°F
+64°F
+21°F
+55°F
+48°F
+61°F
+59°F
+68°F
+43°F
24 Hours Forecast
Duluth
Local time: 07:12
December 26, friday
0900
34°F
E
3 mph
1200
34°F
SE
5 mph
1500
34°F
SE
7 mph
1800
30°F
SE
6 mph
2100
27°F
S
3 mph
December 27, saturday
0000
25°F
W
2 mph
0300
25°F
N
6 mph
0600
27°F
W
4 mph
Units of measurement: °C / °F