Weather in Fukuoka in October
Japan · 20-year averages, October
Prime time. If you get to pick your dates, October is the one. Highs average 23 °C, lows 14.2 °C, and rain falls on 9 days — nothing in the month is working against you.
October is the highest-scoring month of the twelve. The nearest rival is April, and the month at the other end of the year is August.
Rain on 9 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.
What the averages hide
Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average October reaches 30 °C. Across the twenty years measured, the hottest October day reached 31.6 °C and the coldest night fell to 5.2 °C, and the wettest single day dropped 84 mm — roughly 77% of the month's rain in one day.
October is moderately variable: 18 mm in the driest year against 320 mm in the wettest, around an average of 109 mm. Roughly two Octobers in three land near that average, and the third does something else entirely.
Wind is light at 4.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 82%, high enough to notice on the warm days without dominating them.
How October sits in the year
The month is on the way down: 5.3 °C cooler than September, with November dropping another 5.6 °C. The first week and the last are not the same trip.
Daylight in October
11.4 hours of daylight, losing 1 hours across the month. That is between Fukuoka's extremes of 14.4 and 9.9 hours, so days are long enough not to constrain the plan.
Sea temperature
The sea sits at about 23.2 °C in October — comfortable for a proper swim. The sea peaks at 27.4 °C in August and bottoms out at 14.4 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.
How busy it gets
Peak season. Expect the highest prices of the year and to be booking well ahead.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
October in Fukuoka versus nearby
If Fukuoka is one option among several, the nearby comparison is worth making. Kitakyushu is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Hiroshima is close enough to be a coin toss — within a degree on temperature, 1 day more rain.
So: October is the answer for Fukuoka. If it is booked out or priced out, April is the next best thing at 4 points behind, and August is the month to keep off the shortlist.
Every month in Fukuoka
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|
| January | 9.3 | 1.6 | 10 | 70 | 80 | 10.1 | 15.7 | 47 |
| February | 11.2 | 2.2 | 10 | 88 | 79 | 11 | 14.4 | 52 |
| March | 14.7 | 4.5 | 11 | 118 | 78 | 11.9 | 14.4 | 60 |
| April | 19.9 | 8.9 | 10 | 140 | 78 | 13 | 15.4 | 77 |
| May | 24.8 | 13.9 | 10 | 157 | 79 | 13.9 | 17.8 | 77 |
| June | 27.8 | 18.7 | 15 | 299 | 83 | 14.4 | 21 | 59 |
| July | 31.1 | 23.3 | 18 | 357 | 85 | 14.2 | 24.4 | 42 |
| August | 32.1 | 23.9 | 16 | 204 | 84 | 13.4 | 27.4 | 39 |
| September | 28.3 | 20.2 | 13 | 189 | 85 | 12.4 | 25.7 | 62 |
| October | 23 | 14.2 | 9 | 109 | 82 | 11.4 | 23.2 | 81 |
| November | 17.4 | 8.7 | 9 | 89 | 81 | 10.5 | 20.7 | 74 |
| December | 11.4 | 3.6 | 10 | 79 | 80 | 9.9 | 18 | 52 |
See all twelve months in Fukuoka, or where else to go in October.
Planning the rest of the trip
- Flight time to Fukuoka how long you are actually in the air
- Fukuoka time zone and the difference from home
- Days until your trip count down to the departure date