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Best Time for the Argentina's Northwest
Sweet spot: April, May, June — computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.
Dry season: the seven-colour hills stay vivid and Ruta 68's rock formations bake in clear light.
Summer storms can cut the quebrada roads briefly — and carnival in Humahuaca is gloriously chaotic.
| Month | Temp | Rain | Daylight | |
|---|---|---|---|---|
| January | -0.7–27.2°C | 161 mm | 13.4 h | ❄ |
| February | -3.0–26.5°C | 150 mm | 12.8 h | ❄ |
| March | -2.9–25.3°C | 112 mm | 12.2 h | ❄ |
| April | -6.8–23.9°C | 52 mm | 11.4 h | ❄ |
| May | -7.5–21.5°C | 13 mm | 10.8 h | ❄ |
| June | -11.8–21.7°C | 6 mm | 10.5 h | |
| July | -11.8–21.6°C | 3 mm | 10.6 h | |
| August | -8.0–23.1°C | 4 mm | 11.2 h | |
| September | -7.8–26.2°C | 7 mm | 11.9 h | |
| October | -6.5–27.6°C | 36 mm | 12.6 h | ❄ |
| November | -4.8–28.2°C | 65 mm | 13.2 h | ❄ |
| December | -4.2–27.6°C | 138 mm | 13.5 h | ❄ |