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
Key West 75.9°F 72.6°F
Miami 75.5°F 73.0°F
South Padre Island 71.8°F 71.9°F
Naples 71.5°F 67.7°F
Siesta Key 69.3°F 65.6°F
Sarasota 69.2°F 65.6°F
Tampa 68.3°F 65.5°F
Orlando 67.6°F 66.0°F
St. Petersburg 67.5°F 64.3°F
Corpus Christi 67.5°F 66.5°F
Daytona Beach 67.1°F 65.8°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 67.9 °F
Warmest sea temp:
August 65.9 °F
July 64.0 °F
September 62.4 °F
Coldest months:
January 17.9 °F
February 20.0 °F
December 24.2 °F
Rainiest months:
August 3 days
July 3 days
June 2 days
Windiest months:
April 8.8 mph
March 8.4 mph
November 8.3 mph

Duluth on a weather map

Duluth
+64°F
SE 16 mph
Feels like: +64°F
Precip.: 8%
Places in USA:
Name
°F
+88°F
+97°F
+79°F
+111°F
+93°F
+95°F
+73°F
+91°F
+90°F
+86°F
+82°F
+84°F
+93°F
+95°F
+84°F
24 Hours Forecast
Duluth
Local time: 13:11
July 21, tuesday
1500
66°F
S
14 mph
1800
70°F
S
12 mph
2100
59°F
SW
12 mph
July 22, wednesday
0000
50°F
S
5 mph
0300
48°F
SE
5 mph
0600
46°F
SE
5 mph
0900
63°F
SE
5 mph
1200
70°F
SE
4 mph
Units of measurement: °C / °F