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 38.5°F. The highest and lowest sea temperatures during the month were 42.3°F and 34.7°F.

Monthly sea water temperature in Duluth, °F

Which USA resorts have warmest sea in December?

Place name December 2025 December 2024
Kailua Kona 79.3°F 78.3°F
West Palm Beach 79.1°F 78.4°F
Fort Lauderdale 78.8°F 77.6°F
Honolulu 78.6°F 78.3°F
Hawaii 78.6°F 78.3°F
Kauai 78.3°F 76.0°F
Maui 78.1°F 77.8°F
Miami Beach 77.6°F 75.9°F
Oahu 77.2°F 77.2°F
Islamorada 76.7°F 73.4°F
Key Largo 76.5°F 73.1°F
Key West 76.1°F 72.6°F
Miami 75.9°F 73.0°F
Everglades 73.9°F 69.7°F
Marco Island 72.0°F 68.0°F
Naples 71.6°F 67.7°F
South Padre Island 71.5°F 71.9°F
Sanibel Island 71.0°F 67.1°F
Cocoa Beach 69.5°F 66.6°F
Siesta Key 69.4°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 24.3 °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
+36°F
NE 2 mph
Feels like: +34°F
Precip.: 64%
Places in USA:
Name
°F
+36°F
+75°F
+75°F
+59°F
+59°F
+70°F
+75°F
+70°F
+28°F
+57°F
+52°F
+66°F
+66°F
+70°F
+41°F
24 Hours Forecast
Duluth
Local time: 20:16
December 27, saturday
2100
36°F
NE
2 mph
December 28, sunday
0000
36°F
S
1 mph
0300
36°F
S
4 mph
0600
36°F
S
5 mph
0900
32°F
SE
6 mph
1200
30°F
SE
13 mph
1500
23°F
S
19 mph
1800
19°F
S
17 mph
Units of measurement: °C / °F