Current sea water temperature:
+75.0°F
| Minimum sea water temperature in April: | 77.7°F |
| Maximum sea water temperature in April: | 74.3°F |
| Average sea water temperature in April: | 75.8°F |
| more information | |
14 days
forecast
forecast
| Kauai |
monthly
weather
weather
| Kauai |
Sea water temperature for the last 10 days:
| April 6 | 75.0°F | April 1 | 75.0°F |
| April 5 | 75.0°F | March 31 | 75.2°F |
| April 4 | 75.0°F | March 30 | 75.4°F |
| April 3 | 75.0°F | March 29 | 75.7°F |
| April 2 | 75.0°F | March 28 | 75.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Kauai?
Based on the data about daily sea water temperature for the last three years the warmest sea in Kauai was noticed in September, October and August.
Monthly Sea Temperatures in Kauai, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 81.5°F. The highest and lowest sea temperatures during the month were 81.9°F and 81.1°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 81.3°F. The highest and lowest sea temperatures during the month were 81.9°F and 80.4°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 79.1°F. The highest and lowest sea temperatures during the month were 81.3°F and 76.1°F.
current
weather
weather
| Kauai |
weather in
April
April
| Kauai |
Best time for vacation in Kauai
Kauai on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Kauai
Local time: 01:18
April 06, monday
0300
68°F
NW
9 mph
9 mph
0600
68°F
NW
8 mph
8 mph
0900
72°F
W
11 mph
11 mph
1200
73°F
W
11 mph
11 mph
1500
73°F
NW
7 mph
7 mph
1800
73°F
NW
9 mph
9 mph
2100
70°F
NW
8 mph
8 mph
April 07, tuesday
0000
70°F
NW
7 mph
7 mph
