World Resorts USA Oahu Weather

Oahu Sea Temperature in December

Average sea water temperature in December:
+77.4°F
Minimum sea water temperature in December: 79.0°F
Maximum sea water temperature in December: 75.9°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 77.1°F. The highest and lowest sea temperatures during the month were 77.9°F and 75.9°F.

Monthly sea water temperature in Oahu, °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 79.0°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 78.3°F 76.0°F
Maui 78.1°F 77.8°F
Miami Beach 77.5°F 75.9°F
Oahu 77.1°F 77.2°F
Islamorada 76.5°F 73.4°F
Key Largo 76.4°F 73.1°F
Key West 76.0°F 72.6°F
Miami 75.7°F 73.0°F
Everglades 73.8°F 69.7°F
Marco Island 71.9°F 68.0°F
South Padre Island 71.7°F 71.9°F
Naples 71.5°F 67.7°F
Sanibel Island 71.0°F 67.1°F
Cocoa Beach 69.6°F 66.6°F
Siesta Key 69.3°F 65.6°F

Best time for vacation in Oahu

Sunniest months:
January 8 days
September 6 days
August 6 days
Warmest months:
September 82.3 °F
August 82.2 °F
July 81.2 °F
Warmest sea temp:
October 80.2 °F
September 80.1 °F
August 79.5 °F
Coldest months:
February 75.3 °F
March 76.0 °F
January 76.2 °F
Rainiest months:
March 1 day
December 1 day
April 1 day
Windiest months:
July 13.0 mph
May 11.8 mph
June 11.7 mph

Oahu on a weather map

Oahu
+70°F
W 2 mph
Feels like: +70°F
Precip.: 60%
Places in USA:
Name
°F
+48°F
+73°F
+73°F
+45°F
+52°F
+64°F
+64°F
+68°F
+36°F
+54°F
+46°F
+59°F
+59°F
+50°F
+25°F
24 Hours Forecast
Oahu
Local time: 22:01
December 29, monday
0000
70°F
NW
3 mph
0300
68°F
W
3 mph
0600
68°F
W
4 mph
0900
72°F
W
4 mph
1200
75°F
W
6 mph
1500
77°F
W
4 mph
1800
72°F
SW
5 mph
2100
70°F
W
4 mph
Units of measurement: °C / °F