The best time to visit Kyushu & Okinawa is Oct–Apr. Month by month, the verdicts rate Nov–Feb as comfortable on both daytime heat and rainfall — 4 months in all.
Subtropical; early rainy season & typhoons
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 19.8 | 68 | 44% | Go |
| February | 19.7 | 67 | 40% | Go |
| March | 20.8 | 69 | 48% | Fair |
| April | 22.7 | 73 | 54% | Fair |
| May | 25.0 | 77 | 59% | Too wet |
| June | 27.4 | 81 | 70% | Too wet |
| July | 29.2 | 85 | 52% | Fair |
| August | 29.3 | 85 | 60% | Too wet |
| September | 28.6 | 83 | 58% | Too wet |
| October | 26.7 | 80 | 45% | Fair |
| November | 24.3 | 76 | 44% | Go |
| December | 21.4 | 71 | 41% | Go |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
February is the driest month, with rain on 40% of days and daytime highs near 19.7°C (67°F). June is the wettest, at 70%. The warmest month is August at 29.3°C (85°F); the coolest is February at 19.7°C (67°F). The record rules out too wet in May–Jun, Aug–Sep.