Kumamoto weather by month & the best time to visit
Japan · city break · humid subtropical climate
The best time to visit Kumamoto is October — its sunniest month (Sunshine Score 68/100), with May and June close behind. Kumamoto averages about 1,845 hours of sunshine a year. Daytime highs around 22°C / 72°F and roughly 117 mm of rain in October.
When is the best time to visit Kumamoto?
For sunshine, the best time to visit Kumamoto is October, then May and June. The dullest month is January (0/100, 69 mm of rain). The full month-by-month picture is in the table below.
How sunny is Kumamoto?
Kumamoto gets a moderate 1,845 hours of sunshine a year. 68 Sunshine Score points separate October (68) from January (0), so the month you pick matters. It ranks #22 of 79 destinations in Japan for annual sunshine, above the national median of 1,773 hours. Rain has a clear season: the wettest stretch, around July, carries about 46% of the annual 2,131 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 8° / 46°F | 1° / 34°F | 69 mm | 2 |
| February | 18 | 11° / 52°F | 2° / 36°F | 101 mm | 3 |
| March | 33 | 14° / 57°F | 4° / 39°F | 130 mm | 5 |
| April | 57 | 19° / 66°F | 9° / 48°F | 157 mm | 6 |
| May | 62 | 23° / 73°F | 14° / 57°F | 182 mm | 6 |
| June | 62 | 26° / 79°F | 18° / 64°F | 383 mm | 6 |
| July | 62 | 29° / 84°F | 22° / 72°F | 394 mm | 7 |
| August | 62 | 30° / 86°F | 23° / 73°F | 213 mm | 8 |
| September | 62 | 27° / 81°F | 19° / 66°F | 207 mm | 6 |
| October | 68 | 22° / 72°F | 13° / 55°F | 117 mm | 5 |
| November | 48 | 16° / 61°F | 8° / 46°F | 96 mm | 3 |
| December | 19 | 11° / 52°F | 3° / 37°F | 82 mm | 2 |
Nearest destinations
Head-to-head
How Kumamoto compares month by month: Kumamoto vs Fukuoka · Kumamoto vs Kagoshima · Kumamoto vs Nagasaki · Kumamoto vs Miyazaki · all comparisons
Kumamoto: questions and answers
What kind of destination is Kumamoto?
Kumamoto is a city break in Japan with a humid subtropical climate.
How many hours of sunshine does Kumamoto get a year?
Kumamoto gets about 1,845 hours of sunshine a year, at its best around October.
When is the best time to visit Kumamoto?
The sunniest time to visit Kumamoto is October, when the Sunshine Score peaks at 68/100 (with May and June close behind). Expect daytime highs around 22°C / 72°F.
What is the least sunny month in Kumamoto?
January is the least sunny month in Kumamoto, scoring 0/100 with about 69 mm of rain.
How strong is the sun in Kumamoto?
The typical midday UV index in Kumamoto peaks around 8 (very high) in August, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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