The best months to visit Central Japan (Tokyo, Kyoto) are Apr–May, August, Oct–Nov. Good conditions are scattered across the year rather than forming one clean season. The recommended window is Apr–Jun, Sep–Dec.
Tsuyu rains Jun–Jul; typhoons Aug–Sep
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 9.2 | 49 | 20% | Fair |
| February | 10.0 | 50 | 26% | Fair |
| March | 13.3 | 56 | 37% | Fair |
| April | 18.3 | 65 | 39% | Go |
| May | 22.7 | 73 | 40% | Go |
| June | 25.7 | 78 | 51% | Fair |
| July | 29.4 | 85 | 47% | Fair |
| August | 30.9 | 88 | 41% | Go |
| September | 27.4 | 81 | 49% | Fair |
| October | 22.1 | 72 | 42% | Go |
| November | 16.9 | 62 | 33% | Go |
| December | 11.7 | 53 | 23% | Fair |
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.
January is the driest month, with rain on 20% of days and daytime highs near 9.2°C (49°F). June is the wettest, at 51%. Temperature swings hard across the year — 21.7°C between August (30.9°C / 88°F) and January (9.2°C / 49°F) — so packing for the wrong month is the main risk.