Weather in Kitakyushu in January

A hard month. January asks something of you. Go in knowing what. Highs sit at 9.2 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

January ranks 12 of 12 — near the bottom of Kitakyushu's year. October is the month that works, and the swing between the two is 36 points, which is a different holiday rather than a slightly better one.

Rain on 11 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 9.2 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 3.6 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest January day reached 18.7 °C and the coldest night fell to -2.9 °C, and the wettest single day dropped 46 mm — roughly 60% of the month's rain in one day.

January is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest January on record still delivered 150 mm against 31 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 77 mm average is a reasonable planning figure, not a promise.

Wind sits around 18.6 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity is unremarkable at 73%.

How January sits in the year

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

Daylight in January

January sits at the dark end of Kitakyushu's year — 10.1 hours of daylight against 14.4 at midsummer, gaining 0.5 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 15.7 °C in January — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. 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

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

January in Kitakyushu versus nearby

If Kitakyushu is one option among several, the nearby comparison is worth making. Fukuoka is close enough to be a coin toss — within a degree on temperature, 1 day less rain. Hiroshima is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: January is a compromise. October is 36 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 January.