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Rancagua Weather by Month
Average temperatures, rainfall and humidity for Rancagua, Chile, month by month, built from OpenWeather’s historical records. Use it to see what a typical Rancagua month looks like before you travel — then check the live Rancagua forecast for the days ahead.
Warmest month
January
29°C average high
Coolest month
July
4°C average low
Wettest month
June
54 mm of rain
Driest month
February
4 mm of rain
Average temperature and rainfall in Rancagua 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 | 29°C | 13°C | 4°C / 39°C | 18 mm | 52% | 7 km/h |
| February | 29°C | 13°C | 6°C / 37°C | 4 mm | 50% | 7 km/h |
| March | 27°C | 11°C | 1°C / 34°C | 11 mm | 52% | 7 km/h |
| April | 22°C | 9°C | 1°C / 32°C | 16 mm | 59% | 6 km/h |
| May | 18°C | 7°C | -3°C / 29°C | 35 mm | 65% | 5 km/h |
| June | 15°C | 4°C | -8°C / 26°C | 54 mm | 73% | 5 km/h |
| July | 14°C | 4°C | -11°C / 27°C | 50 mm | 74% | 5 km/h |
| August | 16°C | 5°C | -8°C / 27°C | 43 mm | 76% | 6 km/h |
| September | 18°C | 6°C | -5°C / 30°C | 27 mm | 73% | 6 km/h |
| October | 21°C | 7°C | -1°C / 33°C | 22 mm | 66% | 7 km/h |
| November | 24°C | 10°C | 1°C / 37°C | 24 mm | 57% | 8 km/h |
| December | 27°C | 11°C | 2°C / 38°C | 25 mm | 53% | 8 km/h |
Best time to visit Rancagua
The most comfortable time to visit Rancagua is generally March to April and November, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around June, totalling about 330 mm a year.
Travellers who prefer heat should aim for January, when highs average 29°C. June is the month to avoid if rain would spoil your plans — it averages 54 mm, roughly 15× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Rancagua forecast for what is happening now.