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Lerma Weather by Month
Average temperatures, rainfall and humidity for Lerma, Mexico, month by month, built from OpenWeather’s historical records. Use it to see what a typical Lerma month looks like before you travel — then check the live Lerma forecast for the days ahead.
Warmest month
April
26°C average high
Coolest month
January
4°C average low
Wettest month
September
128 mm of rain
Driest month
February
10 mm of rain
Average temperature and rainfall in Lerma 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 | 21°C | 4°C | -4°C / 26°C | 18 mm | 57% | 7 km/h |
| February | 23°C | 6°C | -6°C / 30°C | 10 mm | 50% | 8 km/h |
| March | 24°C | 8°C | -2°C / 31°C | 28 mm | 47% | 8 km/h |
| April | 26°C | 10°C | -2°C / 33°C | 24 mm | 46% | 9 km/h |
| May | 25°C | 11°C | 3°C / 31°C | 77 mm | 55% | 8 km/h |
| June | 23°C | 12°C | 4°C / 30°C | 123 mm | 67% | 8 km/h |
| July | 22°C | 11°C | 4°C / 28°C | 109 mm | 72% | 7 km/h |
| August | 22°C | 11°C | 5°C / 28°C | 119 mm | 73% | 7 km/h |
| September | 22°C | 11°C | 5°C / 26°C | 128 mm | 75% | 7 km/h |
| October | 21°C | 9°C | -2°C / 27°C | 65 mm | 69% | 7 km/h |
| November | 22°C | 7°C | -2°C / 27°C | 31 mm | 63% | 7 km/h |
| December | 21°C | 5°C | -3°C / 27°C | 22 mm | 61% | 7 km/h |
Best time to visit Lerma
The most comfortable time to visit Lerma is generally February to April, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around September, totalling about 755 mm a year.
Travellers who prefer heat should aim for April, when highs average 26°C. September is the month to avoid if rain would spoil your plans — it averages 128 mm, roughly 12× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Lerma forecast for what is happening now.
Weather across Mexico right now
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