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Best Time for Nikkō and Aizu Heritage Road
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Sweet spot: March, April, November. Computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.
💡 Good to know
- Use the published road season and check current roads, weather, public access and every optional service separately.
| Month | Low | High | Rain | Daylight | |
|---|---|---|---|---|---|
| January | −4.8°C | 2.5°C | 63 mm | 9.8 h | ❄ |
| February | −4.7°C | 3.8°C | 47 mm | 10.6 h | ❄ |
| March | −1.9°C | 8.3°C | 84 mm | 11.7 h | ❄ |
| April | 3.1°C | 14.9°C | 106 mm | 12.9 h | |
| May | 9.1°C | 20.6°C | 116 mm | 14.0 h | |
| June | 14.1°C | 24.1°C | 142 mm | 14.6 h | |
| July | 18.4°C | 27.6°C | 199 mm | 14.3 h | |
| August | 19.4°C | 28.6°C | 159 mm | 13.4 h | |
| September | 15.3°C | 24.4°C | 177 mm | 12.2 h | |
| October | 8.8°C | 18.1°C | 174 mm | 11.0 h | |
| November | 2.8°C | 12.0°C | 78 mm | 10.0 h | |
| December | −2.2°C | 5.6°C | 68 mm | 9.4 h | ❄ |