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Puerto Montt Weather by Month
Average temperatures, rainfall and humidity for Puerto Montt, Chile, month by month, built from OpenWeather’s historical records. Use it to see what a typical Puerto Montt month looks like before you travel — then check the live Puerto Montt forecast for the days ahead.
Warmest month
January
20°C average high
Coolest month
July
4°C average low
Wettest month
August
87 mm of rain
Driest month
January
18 mm of rain
Average temperature and rainfall in Puerto Montt by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 20°C | 10°C | 2°C / 34°C | 18 mm | 78% | 11 km/h |
| February | 20°C | 10°C | 2°C / 34°C | 22 mm | 79% | 11 km/h |
| March | 18°C | 8°C | 0°C / 30°C | 42 mm | 83% | 11 km/h |
| April | 15°C | 7°C | -2°C / 24°C | 56 mm | 88% | 10 km/h |
| May | 13°C | 6°C | -4°C / 22°C | 86 mm | 90% | 11 km/h |
| June | 10°C | 4°C | -7°C / 16°C | 72 mm | 91% | 12 km/h |
| July | 10°C | 4°C | -5°C / 17°C | 66 mm | 89% | 13 km/h |
| August | 11°C | 4°C | -4°C / 20°C | 87 mm | 88% | 12 km/h |
| September | 12°C | 4°C | -3°C / 21°C | 50 mm | 85% | 12 km/h |
| October | 14°C | 6°C | -2°C / 25°C | 41 mm | 82% | 11 km/h |
| November | 16°C | 7°C | 0°C / 26°C | 35 mm | 80% | 12 km/h |
| December | 18°C | 9°C | 2°C / 28°C | 30 mm | 79% | 12 km/h |
Best time to visit Puerto Montt
The most comfortable time to visit Puerto Montt is generally December to February, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around August, totalling about 604 mm a year.
Travellers who prefer heat should aim for January, when highs average 20°C. August is the month to avoid if rain would spoil your plans — it averages 87 mm, roughly 5× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Puerto Montt forecast for what is happening now.