Climate Overview
The climate in San Juan Cotzal is warm and mild. The average annual temperature is 19°C and approximately 2258mm of precipitation falls per year. San Juan Cotzal receives a notable amount of rainfall throughout the year, including during its driest month. San Juan Cotzal 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, February, December, when temperatures can drop to 12°C.
Temperature
San Juan Cotzal sees moderate temperature variation throughout the year, ranging from 12°C to 27°C. The warmest month is May, when average highs reach 27°C and the mean temperature sits around 21°C. January is the coolest month, with minimum temperatures around 12°C and an average of 16°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.
Precipitation
San Juan Cotzal is a very wet location, receiving approximately 2258mm of precipitation annually, which averages out to around 188mm per month. The wettest month is June, averaging 380mm of rainfall. September and October also tend to see above-average precipitation. The driest month is March, with just 69mm. That's 310mm less than June, 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
San Juan Cotzal is relatively calm, with an average annual wind speed of 4km/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 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
87 days until Winter
It is currently autumn in San Juan Cotzal, which began on September 23, 2026. San Juan Cotzal 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 27°C, while the coldest stretch bottoms out in January near 12°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 13 to 27°C. Precipitation is moderate at around 294mm for the season, averaging 98mm per month. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 16 to 25°C. Rainfall is heavy, totalling around 855mm across the season with a monthly average of 285mm. Winds are generally light, averaging 3km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 15 to 25°C. Rainfall is heavy, totalling around 792mm across the season with a monthly average of 264mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 12 to 22°C. Rainfall is heavy, totalling around 318mm across the season with a monthly average of 106mm. Winds are generally light, averaging 4km/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 San Juan Cotzal is during February, March and April, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 77mm per month. By contrast, May can be uncomfortably hot with highs reaching 27°C, while January is the coldest period with lows dropping to 12°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.
Monthly Climate Data
The table below shows monthly climate averages for San Juan Cotzal 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.
