Weather in Kitakyushu in August

Shoulder season. August is shoulder season in Kitakyushu — cheaper, quieter, and a genuine gamble. You should expect rain on 16 days of the month, which is more days wet than dry.

August ranks 8 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.

Rain on 16 days, 5 of them heavy. Enough to need a plan B, not enough to need a plan around it. Natural fibres and a second shirt for the day. At 82% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: 13 days top 30 °C — hot spells arrive, but they break; the day barely swings — 4 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest August day reached 33.7 °C and the coldest night fell to 20.8 °C, and the wettest single day dropped 98 mm — roughly 51% of the month's rain in one day.

August is moderately variable: 55 mm in the driest year against 552 mm in the wettest, around an average of 192 mm. Roughly two Augusts in three land near that average, and the third does something else entirely.

Wind is light at 12.3 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 August sits in the year

This is a turning point in the year — July and September sit on opposite sides of it, so the month contains the change rather than following it.

Daylight in August

13.5 hours of daylight, losing 0.9 hours across the month. That is between Kitakyushu'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 27.4 °C in August — warm enough that the water offers no relief from the heat. 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.

August in Kitakyushu versus nearby

If Kitakyushu is one option among several, the nearby comparison is worth making. Fukuoka is the weaker option in August — 2.6 °C warmer, the same number of rain days. Hiroshima is close enough to be a coin toss — 2.3 °C warmer, 5 days less rain.

So: August is a compromise. October is 27 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

See all twelve months in Kitakyushu, or where else to go in August.