Climate Overview
The climate in Atotonilco el Grande is temperate. The average annual temperature is 15°C and approximately 1120mm of precipitation falls per year. September is the wettest month, receiving around 199mm of rainfall. Atotonilco el Grande is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, June. The coldest months are January, December, February, when temperatures can drop to 6°C.
Temperature
Atotonilco el Grande sees moderate temperature variation throughout the year, ranging from 6°C to 25°C. May is the warmest month, though highs remain moderate at 25°C with a mean of 18°C. January is the coolest month, with minimum temperatures around 6°C and an average of 11°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 2°C shift in average temperatures.
Precipitation
Atotonilco el Grande is a moderately rainy area, receiving approximately 1120mm of precipitation annually, which averages out to around 93mm per month. The wettest month is September, averaging 199mm of rainfall. June and August also tend to see above-average precipitation. The driest month is February, with just 19mm. That's 181mm less than September, 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.
Wind
Atotonilco el Grande is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 9km/h in winter, 11km/h in spring, 12km/h in summer, 11km/h in autumn.
Seasons
89 days until Summer
It is currently spring in Atotonilco el Grande, which began on March 20, 2026. Atotonilco el Grande 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 May at around 25°C, while the coldest stretch bottoms out in January near 6°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 9 to 25°C. Precipitation is moderate at around 180mm for the season, averaging 60mm per month. Winds are generally light, averaging 11km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 13 to 23°C. Rainfall is heavy, totalling around 493mm across the season with a monthly average of 164mm. Winds are generally light, averaging 12km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 9 to 22°C. Rainfall is heavy, totalling around 380mm across the season with a monthly average of 127mm. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 6 to 21°C. Rainfall is relatively light, with around 66mm over the season and a monthly average of 22mm. Winds are generally light, averaging 9km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Atotonilco el Grande is during March, April and May, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 60mm per month. By contrast, January can be quite cold with temperatures dropping to 6°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Atotonilco el Grande 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. 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.
