Weather in Haikou: August
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Average day temperature: | 90.0°F |
| Average night temperature: | 80.6°F | |
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Sea water temperature: | 85.5°F |
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Number of sunny days: | 12 days |
| Day length: | 12.5 - 13.0 hours | |
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Number of rainy days: | 9 days |
| Precipitation totals: | 6.1 in. | |
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forecast
| Haikou |
temperature
| Haikou |
Air temperature in August, °F
The highest day temperature during August of 2025 was 90°F. At the same time the lowest night temperature was 77°F. Daily and nightly averages during August were 86.7°F and 79.7°F.
Sea water temperature in Haikou in August, °F
The average sea water temperature in August of 2025 was 85.6°F. The highest and lowest sea temperatures during the month were 88.5°F and 83.5°F.
Mostly all days in August are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in August, in.
Precipitation total value in Haikou in August is 6.2 in. Other months of the year show relatively similar values.
The average wind speed value in August is 8.2 mph It makes August lest windy month 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: 6.9.
Best time for vacation in Haikou
Haikou on a weather map
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