SeasonMapKumamoto weather by month
Japan
The best time to visit Kumamoto is April, October and November — 86/100 in October, 26°C and 10 rainy days. The best season is spring, March to May (78/100 on average).
The worst month is July at 50/100 — sweltering, soaked, clean air. See July →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Japan →
Kumamoto, month by month
Comfort score out of 100 for the kind of trip Kumamoto is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
| Month | Score | Tier | High | Rain | Sun | Crowds | On |
|---|---|---|---|---|---|---|---|
| JanJanuary | 66 | C | 12°C | 9 d | 7 h | Busy | 1 |
| FebFebruary | 67 | C | 13°C | 11 d | 7 h | Shoulder | 1 |
| MarMarch | 73 | B | 17°C | 13 d | 8 h | Peak | 2 |
| AprApril | 83 | A | 22°C | 11 d | 8 h | Peak | 3 |
| MayMay | 77 | B | 26°C | 13 d | 8 h | Peak | 2 |
| JunJune | 56 | D | 29°C | 16 d | 7 h | Quiet | 1 |
| JulJuly | 50 | D | 33°C | 15 d | 9 h | Busy | 1 |
| AugAugust | 54 | D | 34°C | 14 d | 10 h | Busy | 2 |
| SepSeptember | 62 | C | 31°C | 14 d | 8 h | Busy | 3 |
| OctOctober | 86 | A | 26°C | 10 d | 8 h | Busy | 1 |
| NovNovember | 81 | A | 20°C | 9 d | 8 h | Busy | 1 |
| DecDecember | 70 | B | 13°C | 9 d | 7 h | Busy | 1 |
What's on in Kumamoto through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
Crowds in Kumamoto in October
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Busyschool holidays in 3 of the markets that fill it, one of its best months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet