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Best Time for Tōhoku: Sendai to Aomori
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Sweet spot: April, May, June. Computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.
💡 Good to know
- Confirm the exact JR services before travel and keep the day flexible for snow disruption — mountain attractions and seasonal interiors are not part of the baseline.
- Use the official bloom report for timing — the plan includes Hirosaki Park's public grounds, while the castle keep interior remains closed during the restoration.
- Allow for rain and confirm current rail times — festivals appear only when their exact date and admission are separately verified, never as a standing daily stop.
- Check current foliage reports rather than expecting peak colour on a fixed date — all core heritage visits remain worthwhile without a foliage guarantee.
| Month | Low | High | Rain | Daylight | |
|---|---|---|---|---|---|
| January | −5.0°C | 0.2°C | 103 mm | 9.5 h | ❄ |
| February | −5.1°C | 1.0°C | 73 mm | 10.5 h | ❄ |
| March | −2.2°C | 5.3°C | 89 mm | 11.7 h | ❄ |
| April | 2.3°C | 12.0°C | 96 mm | 13.0 h | ❄ |
| May | 8.1°C | 18.0°C | 100 mm | 14.2 h | |
| June | 13.0°C | 22.2°C | 109 mm | 14.8 h | |
| July | 17.4°C | 25.5°C | 180 mm | 14.5 h | |
| August | 18.8°C | 26.9°C | 164 mm | 13.5 h | |
| September | 15.0°C | 22.9°C | 144 mm | 12.2 h | |
| October | 8.5°C | 16.6°C | 146 mm | 11.0 h | |
| November | 2.5°C | 9.9°C | 123 mm | 9.8 h | |
| December | −2.4°C | 3.1°C | 131 mm | 9.2 h | ❄ |