Fukuoka weather in September
In September, Fukuoka has an average high of 28 °C82 °F and an average low of 20 °C67 °F, with about 189 mm7.4 in of precipitation. It is the 3rd warmest month of the year and ranks 4th for precipitation.
How September compares with other months
Compared with August, September is 3.8 °C6.8 °F cooler on average and drier by 15 mm0.6 in. Compared with October, September is 5.6 °C10.1 °F warmer on average and wetter by 81 mm3.2 in. Daylight lasts about 12.3 hours around the middle of the month. Average relative humidity is 85% and the average cloud amount 67%.
Is September a good time to visit Fukuoka?
September is not among the most comfortable months by our comfort score: it is fairly wet (189 mm7.4 in) and it is humid (85%). The most comfortable months in Fukuoka are October.
What to wear in September
For Fukuoka in September, pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
September in nearby places
Other months in Fukuoka
- January9 °C48 °F / 1 °C34 °F
- February11 °C52 °F / 2 °C35 °F
- March14 °C58 °F / 4 °C40 °F
- April20 °C68 °F / 9 °C48 °F
- May25 °C76 °F / 14 °C57 °F
- June27 °C81 °F / 18 °C65 °F
- July31 °C87 °F / 23 °C73 °F
- August32 °C89 °F / 23 °C74 °F
- September28 °C82 °F / 20 °C67 °F
- October23 °C73 °F / 14 °C57 °F
- November17 °C63 °F / 8 °C47 °F
- December11 °C52 °F / 3 °C38 °F
Frequently asked questions
How warm is Fukuoka in September?
In September the average high in Fukuoka is 28 °C (82 °F) and the average low is 20 °C (67 °F).
Does it rain a lot in Fukuoka in September?
On average about 189 mm (7.4 in) of precipitation falls in September; it ranks 4th of the 12 months.
Is September the warmest month in Fukuoka?
No. The warmest month in Fukuoka is August, with an average high of 32 °C (89 °F). The coldest month is January, with an average low of 1 °C (34 °F).
How long is the day in Fukuoka in September?
In the middle of September the day in Fukuoka lasts about 12.3 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Fukuoka in September?
The average relative humidity in September is about 85%. Combined with warm days, it can feel muggy.
How cloudy is Fukuoka in September?
On average about 67% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 185 m, while Fukuoka lies at about 3 m. Temperatures on this page were therefore adjusted by +1.2 °C2.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.