Climate Overview
The climate in Atenango del Río is warm and mild. The average annual temperature is 25°C and approximately 1149mm of precipitation falls per year. September is the wettest month, receiving around 289mm of rainfall. Atenango del Río is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, May, March. The coldest months are January, December, February, when temperatures can drop to 15°C.
Temperature
Atenango del Río sees moderate temperature variation throughout the year, ranging from 15°C to 35°C. April is the hottest month, with daytime highs reaching 35°C and an average of 28°C. January is the coolest month, with minimum temperatures around 15°C and an average of 22°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between May and June, with a 2°C shift in average temperatures.
Precipitation
Atenango del Río is a moderately rainy area, receiving approximately 1149mm of precipitation annually, which averages out to around 96mm per month. The wettest month is September, averaging 289mm of rainfall. August and June also tend to see above-average precipitation. The driest month is December, with just 2mm. That's 287mm 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
Atenango del Río is relatively calm, with an average annual wind speed of 1km/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 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.
Seasons
89 days until Autumn
It is currently summer in Atenango del Río, which began on June 21, 2026. Atenango del Río 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 April at around 35°C, while the coldest stretch bottoms out in January near 15°C. Autumn is next, beginning on September 23, 2026 — 89 days from now.
Spring
Temperatures range from 19 to 35°C. Rainfall is relatively light, with around 81mm over the season and a monthly average of 27mm. Winds are generally light, averaging 2km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 20 to 31°C. Rainfall is heavy, totalling around 630mm across the season with a monthly average of 210mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 18 to 31°C. Rainfall is heavy, totalling around 425mm across the season with a monthly average of 142mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 15 to 32°C. Precipitation is minimal, with only around 13mm for the entire season. Winds are generally light, averaging 1km/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 Atenango del Río is during January, February, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 8mm per month. By contrast, April can be uncomfortably hot with temperatures reaching 35°C. 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 Atenango del Río 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.
