The highest day temperature in August 2025 was 98°F. The lowest night temperature was 78°F. The average values for day and night temperatures during August were 92.1°F и 80.8°F respectivly.

The average sea surface temperature in August 2025 for Fukuoka was 89.1°F. The maximum and minimum values were 85.2°F and 91.2°F respectively.

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

Precipitation total in August for Fukuoka is 10.0 in. It makes august the most rainy month of the year.

The average wind speed in August is 6.8 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 Fukuoka in August is 8.2 hours.