Weather in Kitakyushu in July
Japan · 20-year averages, July
Shoulder season. July is shoulder season in Kitakyushu — cheaper, quieter, and a genuine gamble. You should expect rain on 18 days of the month, which is more days wet than dry.
July ranks 7 of 12 in Kitakyushu: past the worst of the year but short of October, which is the month to book if the dates are open.
This is wet-season rain: 18 wet days and 8 genuinely heavy ones, which in this climate means concentrated downpours rather than all-day grey. The pattern is usually a clear morning and a loud afternoon, so front-load the day and stop fighting the 3pm hour. Natural fibres and a second shirt for the day. At 85% nothing dries, including you.
What the averages hide
Averages flatten a month, and this one hides a few things: 4 days top 30 °C — hot spells arrive, but they break; the day barely swings — 3.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 32.1 °C and the coldest night fell to 19.1 °C, and the wettest single day dropped 152 mm — roughly 45% of the month's rain in one day.
July is moderately variable: 58 mm in the driest year against 784 mm in the wettest, around an average of 340 mm. Roughly two Julys in three land near that average, and the third does something else entirely.
Wind is light at 11.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 85% is the real story though — it is the number that decides how the day feels, not the 27.8 °C.
How July sits in the year
The month is on the way up: 3.5 °C warmer than June, and August adds another 1.7 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.
Daylight in July
July is at or near the longest days of Kitakyushu's year: 14.2 hours of daylight, losing 0.5 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.
Sea temperature
The sea sits at about 24.4 °C in July — warm enough to stay in as long as you like. This is the warmest the water gets all year.
How busy it gets
Shoulder. The value months — prices ease off and you get the place closer to itself.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
July in Kitakyushu versus nearby
If Kitakyushu is one option among several, the nearby comparison is worth making. Fukuoka is the weaker option in July — 3.3 °C warmer, the same number of rain days. Hiroshima is the weaker option in July — 2.8 °C warmer, 3 days less rain.
So: July is a compromise. October is 24 points better and is what Kitakyushu is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.
Every month in Kitakyushu
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|
| January | 9.2 | 5.7 | 11 | 77 | 73 | 10.1 | 15.7 | 45 |
| February | 10.2 | 6.1 | 11 | 85 | 72 | 11 | 14.4 | 47 |
| March | 12.8 | 8.1 | 12 | 120 | 72 | 11.9 | 14.4 | 52 |
| April | 16.9 | 11.7 | 11 | 142 | 74 | 13 | 15.4 | 65 |
| May | 21.1 | 15.8 | 10 | 156 | 78 | 13.9 | 17.8 | 77 |
| June | 24.3 | 19.7 | 15 | 265 | 83 | 14.4 | 21 | 66 |
| July | 27.8 | 23.9 | 18 | 340 | 85 | 14.2 | 24.4 | 57 |
| August | 29.5 | 25.5 | 16 | 192 | 82 | 13.5 | 27.4 | 54 |
| September | 26.4 | 22.4 | 14 | 200 | 79 | 12.4 | 25.7 | 71 |
| October | 21.9 | 17.9 | 9 | 107 | 74 | 11.4 | 23.2 | 81 |
| November | 17 | 13.1 | 10 | 88 | 71 | 10.4 | 20.7 | 70 |
| December | 11.7 | 7.9 | 11 | 86 | 73 | 9.9 | 18 | 52 |
See all twelve months in Kitakyushu, or where else to go in July.
Planning the rest of the trip
- Flight time to Kitakyushu how long you are actually in the air
- Kitakyushu time zone and the difference from home
- Days until your trip count down to the departure date