Current sea water temperature:
+80.8°F
| Minimum sea water temperature in August: | 81.3°F |
| Maximum sea water temperature in August: | 76.1°F |
| Average sea water temperature in August: | 79.8°F |
| more information | |
14 days
forecast
forecast
| Kauai |
monthly
weather
weather
| Kauai |
Sea water temperature for the last 10 days:
| August 25 | 80.8°F | August 20 | 80.1°F |
| August 24 | 80.6°F | August 19 | 80.1°F |
| August 23 | 80.6°F | August 18 | 79.7°F |
| August 22 | 80.4°F | August 17 | 79.3°F |
| August 21 | 80.2°F | August 16 | 79.9°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 80.4°F. The highest and lowest sea temperatures during the month were 81.0°F and 79.3°F.
current
weather
weather
| Kauai |
weather in
August
August
| Kauai |
Best time for vacation in Kauai
Kauai on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Kauai
Local time: 09:34
August 25, tuesday
1200
79°F
W
15 mph
15 mph
1500
81°F
W
12 mph
12 mph
1800
77°F
W
12 mph
12 mph
2100
75°F
W
9 mph
9 mph
August 26, wednesday
0000
75°F
W
10 mph
10 mph
0300
73°F
W
11 mph
11 mph
0600
73°F
W
11 mph
11 mph
0900
77°F
W
13 mph
13 mph
