World Resorts USA Duluth Weather

Duluth Sea Temperature in December

Average sea water temperature in December:
+37.1°F
Minimum sea water temperature in December: 42.8°F
Maximum sea water temperature in December: 32.0°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 38.0°F. The highest and lowest sea temperatures during the month were 42.3°F and 34.3°F.

Monthly sea water temperature in Duluth, °F

Which USA resorts have warmest sea in December?

Place name December 2025 December 2024
Kailua Kona 79.2°F 78.3°F
West Palm Beach 79.0°F 78.4°F
Fort Lauderdale 78.7°F 77.6°F
Honolulu 78.6°F 78.3°F
Hawaii 78.5°F 78.3°F
Kauai 78.2°F 76.0°F
Maui 78.0°F 77.8°F
Miami Beach 77.4°F 75.9°F
Oahu 77.1°F 77.2°F
Islamorada 76.4°F 73.4°F
Key Largo 76.3°F 73.1°F
Key West 75.9°F 72.6°F
Miami 75.5°F 73.0°F
Everglades 73.7°F 69.7°F
Marco Island 71.8°F 68.0°F
South Padre Island 71.8°F 71.9°F
Naples 71.5°F 67.7°F
Sanibel Island 70.9°F 67.1°F
Cocoa Beach 69.7°F 66.6°F
Siesta Key 69.3°F 65.6°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 24.2 °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
+10°F
E 8 mph
Feels like: -2°F
Precip.: 0%
Places in USA:
Name
°F
+27°F
+75°F
+75°F
+50°F
+63°F
+57°F
+64°F
+70°F
+23°F
+63°F
+57°F
+55°F
+59°F
+66°F
+21°F
24 Hours Forecast
Duluth
Local time: 19:31
January 01, thursday
2100
9°F
E
9 mph
January 02, friday
0000
5°F
E
8 mph
0300
3°F
E
8 mph
0600
1°F
E
8 mph
0900
1°F
E
7 mph
1200
12°F
E
10 mph
1500
18°F
E
11 mph
1800
16°F
E
9 mph
Units of measurement: °C / °F