Fukuoka weather by month
Fukuoka runs from about 7°C in January to 29°C in August, with June the wettest month at 285 mm.
warmest month
August
29°C
coolest month
January
7°C
wettest month
June
285 mm
worst air month
March
21 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 7°C | 76 mm | 189 h | 15 |
| February | 8°C | 199 mm | 156 h | 17 |
| March | 10°C | 163 mm | 229 h | 21 |
| April | 16°C | 188 mm | 196 h | 18 |
| May | 19°C | 173 mm | 281 h | 19 |
| June | 22°C | 285 mm | 211 h | 13 |
| July | 28°C | 205 mm | 300 h | 15 |
| August | 29°C | 215 mm | 347 h | 17 |
| September | 27°C | 104 mm | 330 h | 11 |
| October | 20°C | 161 mm | 216 h | 11 |
| November | 14°C | 271 mm | 219 h | 16 |
| December | 8°C | 31 mm | 218 h | 15 |
About 2,892 hours of sun a year. Roughly 208 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-22. Full method, licences and the list of sources we rejected are on the methodology page.