Climate Chart of Fukuoka, Japan

Climate overview

Temperature

The monthly mean temperature is coolest in January, at 6.4 °C, and warmest in August, at 27.8 °C. These are monthly averages, not daytime maximum temperatures, so they should not be read as a forecast of the temperature visitors will encounter on a particular day. Across the calendar-month means, the unweighted mean is 16.6 °C. It offers a compact view of the year's monthly averages, rather than a day-weighted annual average or a measure of daily temperature swings.

Rain

Mean daily rainfall reaches its highest monthly level in July, at 8.16 mm/day, while its lowest monthly level is in January, at 2.40 mm/day. The lower mean can be a useful option for visitors prioritising less average rainfall, but it does not guarantee dry days or indicate how often rain occurs. The unweighted mean across the monthly daily-rainfall means is 4.83 mm/day. These are daily amounts averaged by month, not monthly rainfall totals, so the figures do not specify how much rain falls on any particular visit.

Sunshine

Mean daily sunshine is highest in August, at 9.68 hours/day, and lowest in December, at 6.01 hours/day. These figures can help with broad outdoor-planning expectations, but sunshine duration is not the same as day length and does not promise clear skies on a given date. The unweighted mean across the monthly sunshine-duration means is 7.91 hours/day per day, a summary of monthly averages rather than a day-weighted annual figure.

Snow

Mean daily snowfall reaches its highest monthly level in January, at 0.83 mm/day; the unweighted mean across the monthly daily-snowfall means is 0.16 mm/day. These averages describe snowfall amounts, not the number of snowy days, snow depth, snow cover, or skiing conditions.