Current sea water temperature:
+78.3°F
| Minimum sea water temperature in May: | 79.5°F |
| Maximum sea water temperature in May: | 75.4°F |
| Average sea water temperature in May: | 77.5°F |
| more information | |
14 days
forecast
forecast
| Hawaii |
monthly
weather
weather
| Hawaii |
Sea water temperature for the last 10 days:
| May 17 | 78.3°F | May 12 | 78.1°F |
| May 16 | 78.3°F | May 11 | 78.1°F |
| May 15 | 78.1°F | May 10 | 78.1°F |
| May 14 | 78.1°F | May 9 | 78.3°F |
| May 13 | 78.1°F | May 8 | 78.1°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
May
May
| Hawaii |
Best time for vacation in Hawaii
Hawaii on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Hawaii
Local time: 10:15
May 17, sunday
1200
79°F
W
10 mph
10 mph
1500
79°F
W
13 mph
13 mph
1800
77°F
SW
14 mph
14 mph
2100
75°F
W
14 mph
14 mph
May 18, monday
0000
75°F
W
17 mph
17 mph
0300
75°F
W
14 mph
14 mph
0600
75°F
W
15 mph
15 mph
0900
75°F
W
14 mph
14 mph
