Weather in Kauai: August
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Average day temperature: | 80.0°F |
| Average night temperature: | 75.6°F | |
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Sea water temperature: | 79.7°F |
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Number of sunny days: | 1 day |
| Day length: | 12.6 - 13.1 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.5 in. | |
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forecast
| Kauai |
temperature
| Kauai |
Air temperature in August, °F
The highest day temperature during August of 2025 was 84°F. At the same time the lowest night temperature was 73°F. Daily and nightly averages during August were 81.5°F and 74.7°F.
Sea water temperature in Kauai in August, °F
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.
Mostly all days in August are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in August, in.
Precipitation total value in Kauai in August is 0.5 in. Other months of the year show relatively similar values.
The average wind speed value in August is 10.7 mph It makes August one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 5.1.
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Kauai on a weather map
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