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Best Time for the Hanoi to Saigon by Rail
Sweet spot: January, February, March — computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.
Central-coast typhoon season — keep a flex day around Hue and Hoi An.
North is cool and drizzly, south is dry and warm — pack for both.
| Month | Temp | Rain | Daylight | |
|---|---|---|---|---|
| January | 11.8–31.9°C | 51 mm | 11.1 h | |
| February | 12.4–33.7°C | 21 mm | 11.5 h | |
| March | 14.3–35.3°C | 37 mm | 11.9 h | |
| April | 17.6–38.6°C | 55 mm | 12.4 h | |
| May | 20.8–38.4°C | 126 mm | 12.8 h | |
| June | 22.4–37.0°C | 131 mm | 12.9 h | |
| July | 23.6–36.7°C | 174 mm | 12.9 h | |
| August | 23.3–35.3°C | 212 mm | 12.5 h | |
| September | 21.6–34.2°C | 289 mm | 12.1 h | |
| October | 17.8–32.5°C | 349 mm | 11.6 h | |
| November | 14.8–31.8°C | 244 mm | 11.2 h | |
| December | 12.1–30.7°C | 135 mm | 11.0 h |