Climate Overview
The climate in Atotonilco el Alto is warm and mild. The average annual temperature is 20°C and approximately 849mm of precipitation falls per year. July is the wettest month, receiving around 229mm of rainfall. Atotonilco el Alto 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 9°C.
Temperature
Temperatures in Atotonilco el Alto vary considerably across the year, with a 23°C difference between the coldest and warmest months. The warmest month is May, when average highs reach 32°C and the mean temperature sits around 24°C. January is the coolest month, with minimum temperatures around 9°C and an average of 16°C. On average, daily temperatures fluctuate by about 14°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 Alto is a moderately rainy area, receiving approximately 849mm of precipitation annually, which averages out to around 71mm per month. The wettest month is July, averaging 229mm of rainfall. August and September also tend to see above-average precipitation. The driest month is April, with just 1mm. That's 228mm less than July, 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 Alto 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 April, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring in Atotonilco el Alto, which began on March 20, 2026. Atotonilco el Alto 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 32°C, while the coldest stretch bottoms out in January near 9°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 12 to 32°C. Precipitation is minimal, with only around 41mm for the entire season. Winds are generally light, averaging 14km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 16 to 30°C. Rainfall is heavy, totalling around 556mm across the season with a monthly average of 185mm. Winds are generally light, averaging 10km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 12 to 27°C. Precipitation is moderate at around 232mm for the season, averaging 77mm per month. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 9 to 26°C. Precipitation is minimal, with only around 20mm for the entire season. Winds are generally light, averaging 12km/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 Alto is during January, February, March, April, May, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 17mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
The table below shows monthly climate averages for Atotonilco el Alto 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.
