If you're looking for summer vibes, the best time to travel to Fukuoka is in July, August and September, when the average temperature reaches 25.54 °C, while May, March and April are the 3 sunniest months of the year, with an average of 41.92 hours.
However, if you prefer colder temperatures, make sure you visit Fukuoka during January, February or December to experience an average of 8.72 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during February, March and November, when the average precipitation in Fukuoka is 9.75 mm, while the months of January, February and March are drier, with an average of 0 mm.