Current sea water temperature:
+76.1°F
| Minimum sea water temperature in May: | 78.3°F |
| Maximum sea water temperature in May: | 74.8°F |
| Average sea water temperature in May: | 76.7°F |
| more information | |
14 days
forecast
forecast
| Oahu |
monthly
weather
weather
| Oahu |
Sea water temperature for the last 10 days:
| May 16 | 76.1°F | May 11 | 76.5°F |
| May 15 | 76.1°F | May 10 | 76.5°F |
| May 14 | 76.3°F | May 9 | 76.5°F |
| May 13 | 76.6°F | May 8 | 76.1°F |
| May 12 | 76.8°F | May 7 | 75.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Oahu?
Based on the data about daily sea water temperature for the last three years the warmest sea in Oahu was noticed in October, September and August.
Monthly Sea Temperatures in Oahu, °F
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 79.8°F. The highest and lowest sea temperatures during the month were 80.2°F and 79.0°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 79.8°F. The highest and lowest sea temperatures during the month were 80.6°F and 79.3°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 79.5°F. The highest and lowest sea temperatures during the month were 80.2°F and 78.6°F.
current
weather
weather
| Oahu |
weather in
May
May
| Oahu |
Best time for vacation in Oahu
Oahu on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Oahu
Local time: 12:35
May 16, saturday
1500
79°F
SW
3 mph
3 mph
1800
75°F
SW
2 mph
2 mph
2100
75°F
W
1 mph
1 mph
May 17, sunday
0000
73°F
SW
2 mph
2 mph
0300
72°F
SW
4 mph
4 mph
0600
72°F
SW
6 mph
6 mph
0900
75°F
W
9 mph
9 mph
1200
79°F
W
11 mph
11 mph
