Climate Insights for Lerma

The climate in Lerma is temperate. The average annual temperature is 13°C and approximately 589mm of precipitation falls per year. November is the wettest month, receiving around 74mm of rainfall. Lerma is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to 1°C. Light snow can occur between January and November.

Temperatures in Lerma vary considerably across the year, with a 30°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 23°C. January is the coolest month, with minimum temperatures around 1°C and an average of 4°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.

Lerma is a relatively dry area, receiving approximately 589mm of precipitation annually, which averages out to around 49mm per month. The wettest month is November, averaging 74mm of rainfall. October and April also tend to see above-average precipitation. The driest month is July, with just 11mm. That's 63mm less than November, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and November, totalling around 19cm annually. January is the snowiest month with approximately 7cm.

Lerma is mildly breezy, with an average annual wind speed of 18km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 20km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in December, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.

It is currently spring in Lerma, which began on March 20, 2026. Lerma is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 31°C, while the coldest stretch bottoms out in January near 1°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The best time to visit Lerma is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 28mm per month. By contrast, January can be quite cold with temperatures dropping to 1°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Lerma based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.