The highest day temperature in August 2025 was 92°F. The lowest night temperature was 81°F. The average values for day and night temperatures during August were 89.5°F и 86.0°F respectivly.

The average sea surface temperature in August 2025 for Beihai was 91.7°F. The maximum and minimum values were 90.8°F and 92.8°F respectively.

Most of the days in August are cloudy but you can also expect sunny or gloomy days.

Precipitation total in August for Beihai is 11.8 in. It makes august the most rainy month of the year.

The average wind speed in August is 10.4 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Beihai in August is 7.3 hours.