Spring (late March–mid-April) for cherry blossoms, or Autumn (mid-November–early December) for fall foliage. Both are optimal travel windows with mild temperatures (avg 55–58°F) and iconic scenery.. These two periods combine comfortable sightseeing temperatures, peak natural beauty (sakura or koyo), and the richest festival calendar. Summer (June–August) is hot and humid (avg highs ~35°C/95°F) with a rainy season in June–July; winter is cold but less crowded. April is drier than May, making late March–early April especially favorable
| Month | High (°F) | Low (°F) | Notes |
|---|---|---|---|
| Jan | 46 | 32 | cool & mostly dry |
| Feb | 48 | 33 | cool & changeable |
| Mar | 55 | 38 | cool & changeable |
| Apr | 64 | 47 | mild & changeable |
| May | 73 | 56 | warm & changeable |
| Jun | 80 | 65 | warm & changeable |
| Jul | 86 | 73 | hot & wet |
| Aug | 88 | 74 | hot & changeable |
| Sep | 81 | 68 | warm & changeable |
| Oct | 71 | 56 | mild & changeable |
| Nov | 61 | 46 | mild & mostly dry |
| Dec | 50 | 36 | cool & changeable |