Weather in Kitakyushu in March

Shoulder season. March is shoulder season in Kitakyushu — cheaper, quieter, and a genuine gamble. Highs sit at 12.8 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

March ranks 9 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 12 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 12.8 °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 — 4.7 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest March day reached 21 °C and the coldest night fell to 0.6 °C, and the wettest single day dropped 57 mm — roughly 48% of the month's rain in one day.

March is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest March on record still delivered 209 mm against 61 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 120 mm average is a reasonable planning figure, not a promise.

Wind sits around 16.8 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity is unremarkable at 72%.

How March sits in the year

The month is on the way up: 2.6 °C warmer than February, and April adds another 4.1 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in March

11.9 hours of daylight, gaining 1.1 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 14.4 °C in March — 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.

March 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: March is a compromise. October is 29 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 March.