World Resorts USA Duluth Weather

Duluth Sea Temperature in October

Average sea water temperature in October:
+54.9°F
Minimum sea water temperature in October: 65.7°F
Maximum sea water temperature in October: 43.0°F

Daily sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 56.9°F. The highest and lowest sea temperatures during the month were 62.4°F and 50.0°F.

Monthly sea water temperature in Duluth, °F

Which USA resorts have warmest sea in October?

Place name October 2025 October 2024
South Padre Island 84.0°F 82.4°F
Key West 83.8°F 82.9°F
Fort Lauderdale 83.5°F 83.0°F
Miami Beach 83.4°F 83.4°F
Islamorada 83.1°F 82.9°F
Key Largo 83.0°F 83.1°F
Miami 82.7°F 82.9°F
Everglades 82.5°F 82.6°F
Corpus Christi 82.2°F 80.6°F
Naples 81.9°F 81.6°F
Kauai 81.3°F 79.2°F
Cape Coral 81.1°F 81.2°F
Kailua Kona 80.9°F 80.6°F
Honolulu 80.7°F 80.6°F
Hawaii 80.6°F 80.5°F
Siesta Key 80.4°F 80.7°F
Houston 80.4°F 78.8°F
Sarasota 80.2°F 80.5°F
Maui 79.8°F 79.4°F
Oahu 79.8°F 80.2°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
+25°F
NE 15 mph
Feels like: +12°F
Precip.: 0%
Places in USA:
Name
°F
+25°F
+75°F
+75°F
+46°F
+54°F
+68°F
+72°F
+70°F
+23°F
+54°F
+46°F
+54°F
+52°F
+43°F
+18°F
24 Hours Forecast
Duluth
Local time: 08:10
December 16, tuesday
0900
25°F
NE
15 mph
1200
37°F
NE
15 mph
1500
45°F
NE
16 mph
1800
36°F
NE
17 mph
2100
36°F
E
19 mph
December 17, wednesday
0000
27°F
E
19 mph
0300
19°F
E
14 mph
0600
18°F
SE
9 mph
Units of measurement: °C / °F