Climate Insights for Acalco

The climate in Acalco is warm and mild. The average annual temperature is 20°C and approximately 2048mm of precipitation falls per year. September is the wettest month, receiving around 464mm of rainfall. Acalco 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, February, December, when temperatures can drop to 13°C.

Acalco sees moderate temperature variation throughout the year, ranging from 13°C to 30°C. The warmest month is April, when average highs reach 30°C and the mean temperature sits around 22°C. January is the coolest month, with minimum temperatures around 13°C and an average of 19°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs.

Acalco is a very wet location, receiving approximately 2048mm of precipitation annually, which averages out to around 171mm per month. The wettest month is September, averaging 464mm of rainfall. August and July also tend to see above-average precipitation. The driest month is February, with just 4mm. That's 460mm 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.

Acalco is relatively calm, with an average annual wind speed of 10km/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 September, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months.

It is currently spring in Acalco, which began on March 20, 2026. Acalco 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 30°C, while the coldest stretch bottoms out in January near 13°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Acalco is during January, February, March, April, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 21mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Acalco 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.