Fukuoka climate
Fukuoka is warmest in August, with average highs of 31 °C, and coldest in January, when nights average 3.3 °C. June is the wettest month (306 mm) and January the driest (66 mm). Figures are 1991–2020 climate normals.
Across a full year Fukuoka averages 1,725 mm of rain, 111 days above 25 °C and 3 days below freezing.
Japan · population 1,612,392 · 1991–2020 normals
Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month
- Warmest month August 31 °C
- Coldest month January 3.3 °C
- Driest month January 66 mm
- Wettest month June 306 mm
- Least cloud October 51 % cloud
- Hottest on record August 38 °C
- Coldest on record January -3.8 °C
- Warmest sea August 27 °C
What to expectFukuoka through the year
Fukuoka has a clear annual cycle: average daily highs run from 8.6 °C in January to 31 °C in August, a swing of 21 °C in mean temperature across the year.
Counted across a normal year, 111 days a year reach 25 °C, 38 of them reach 30 °C, 3 nights drop below freezing. The warmest reading in the 1991–2020 record is 38 °C, in August.
Rain is strongly seasonal. June averages 306 mm against 66 mm in January — 4.7 times as much. Planning around the dry months matters more here than planning around temperature.
The sea off Fukuoka is warmest in August at 27 °C and coldest in February at 14 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 8.6 °C | 66 mm | 68 % |
| February | 9.8 °C | 75 mm | 65 % |
| March | 13.2 °C | 116 mm | 64 % |
| April | 18.2 °C | 132 mm | 63 % |
| May | 22.7 °C | 142 mm | 67 % |
| June | 25.7 °C | 306 mm | 80 % |
| July | 29.2 °C | 278 mm | 73 % |
| August | 30.5 °C | 169 mm | 63 % |
| September | 26.9 °C | 189 mm | 61 % |
| October | 21.9 °C | 97 mm | 51 % |
| November | 16.5 °C | 85 mm | 54 % |
| December | 11.0 °C | 69 mm | 61 % |
Temperature month by month
| Month | Avg high | Avg low | Mean | Record high | Record low | Days above 25 °C | Days above 30 °C | Days below 0 °C |
|---|---|---|---|---|---|---|---|---|
| January | 8.6 °C | 3.3 °C | 5.9 °C | 18.1 °C | -3.8 °C | 0 | 0 | 1 |
| February | 9.8 °C | 3.7 °C | 6.6 °C | 21.3 °C | -3.0 °C | 0 | 0 | 1 |
| March | 13.2 °C | 6.1 °C | 9.5 °C | 22.7 °C | -0.6 °C | 0 | 0 | 0 |
| April | 18.2 °C | 10.5 °C | 14.1 °C | 26.4 °C | 2.1 °C | 0 | 0 | 0 |
| May | 22.7 °C | 15.1 °C | 18.7 °C | 30.7 °C | 7.6 °C | 7 | 0 | 0 |
| June | 25.7 °C | 19.7 °C | 22.4 °C | 34.0 °C | 13.7 °C | 18 | 1 | 0 |
| July | 29.2 °C | 23.7 °C | 26.1 °C | 37.3 °C | 17.9 °C | 29 | 14 | 0 |
| August | 30.5 °C | 24.6 °C | 27.2 °C | 37.8 °C | 19.0 °C | 31 | 19 | 0 |
| September | 26.9 °C | 20.9 °C | 23.6 °C | 34.6 °C | 13.3 °C | 22 | 4 | 0 |
| October | 21.9 °C | 15.5 °C | 18.4 °C | 30.3 °C | 5.8 °C | 4 | 0 | 0 |
| November | 16.5 °C | 10.2 °C | 13.1 °C | 25.1 °C | 2.2 °C | 0 | 0 | 0 |
| December | 11.0 °C | 5.4 °C | 8.0 °C | 22.9 °C | -2.7 °C | 0 | 0 | 0 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind | Sea temp |
|---|---|---|---|---|---|---|---|
| January | 66 mm | 10 | 10 h/day | 68 % | 73 % | 16 km/h | 15.5 °C |
| February | 75 mm | 9 | 11 h/day | 65 % | 73 % | 16 km/h | 14.0 °C |
| March | 116 mm | 11 | 12 h/day | 64 % | 74 % | 17 km/h | 14.1 °C |
| April | 132 mm | 11 | 13 h/day | 63 % | 76 % | 16 km/h | 15.4 °C |
| May | 142 mm | 10 | 14 h/day | 67 % | 78 % | 14 km/h | 17.9 °C |
| June | 306 mm | 16 | 14 h/day | 80 % | 84 % | 14 km/h | 20.7 °C |
| July | 278 mm | 17 | 14 h/day | 73 % | 85 % | 14 km/h | 24.4 °C |
| August | 169 mm | 15 | 13 h/day | 63 % | 82 % | 13 km/h | 26.7 °C |
| September | 189 mm | 13 | 12 h/day | 61 % | 81 % | 14 km/h | 25.3 °C |
| October | 97 mm | 8 | 11 h/day | 51 % | 77 % | 15 km/h | 22.7 °C |
| November | 85 mm | 8 | 10 h/day | 54 % | 75 % | 14 km/h | 20.4 °C |
| December | 69 mm | 9 | 9.9 h/day | 61 % | 74 % | 16 km/h | 17.9 °C |
Planning a trip? See the best time to visit Fukuoka.
QuestionsCommon questions about Fukuoka’s climate
When is the best time to visit Fukuoka?
That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, October sit closest to 20 °C on average, August is the warmest month and January the driest. The month-by-month table above has the full picture.
How hot does Fukuoka get?
In August, the warmest month, daily highs average 31 °C. About 38 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.
How cold does it get in winter?
Nights average 3.3 °C in January, the coldest month. A normal year has 3 nights below freezing.
Which month is wettest in Fukuoka?
June, averaging 306 mm over 16 days with rain. The driest month is January with 66 mm. The year as a whole averages 1,725 mm.
Are these figures a forecast?
No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Fukuoka rather than what any particular week will bring. Individual years can differ substantially from the normal.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Data point
- 33.600°, 130.417° (the coordinates the reanalysis values are taken for)
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.