Current sea water temperature:
+78.6°F
| Minimum sea water temperature in December: | 80.2°F |
| Maximum sea water temperature in December: | 74.8°F |
| Average sea water temperature in December: | 77.7°F |
| more information | |
14 days
forecast
forecast
| Hawaii |
monthly
weather
weather
| Hawaii |
Sea water temperature for the last 10 days:
| December 14 | 78.6°F | December 9 | 78.6°F |
| December 13 | 78.6°F | December 8 | 78.4°F |
| December 12 | 78.6°F | December 7 | 78.4°F |
| December 11 | 78.8°F | December 6 | 78.8°F |
| December 10 | 78.6°F | December 5 | 79.0°F |
Monthly sea water temperature, °F
When is the warmest sea in Hawaii?
Based on the data about daily sea water temperature for the last three years the warmest sea in Hawaii was noticed in September, October and August.
Monthly Sea Temperatures in Hawaii, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 80.5°F. The highest and lowest sea temperatures during the month were 81.1°F and 80.1°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 80.6°F. The highest and lowest sea temperatures during the month were 81.0°F and 79.7°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 80.6°F. The highest and lowest sea temperatures during the month were 81.3°F and 79.7°F.
current
weather
weather
| Hawaii |
weather in
December
December
| Hawaii |
Best time for vacation in Hawaii
Hawaii on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Hawaii
Local time: 13:07
December 14, sunday
1500
77°F
NE
8 mph
8 mph
1800
75°F
N
5 mph
5 mph
2100
75°F
N
2 mph
2 mph
December 15, monday
0000
75°F
N
4 mph
4 mph
0300
73°F
NW
9 mph
9 mph
0600
73°F
W
4 mph
4 mph
0900
72°F
W
6 mph
6 mph
1200
72°F
NW
14 mph
14 mph
