Climate Overview
The climate in San Juan del Cesar is warm and mild. The average annual temperature is 23°C and approximately 2463mm of precipitation falls per year. San Juan del Cesar receives a notable amount of rainfall throughout the year, including during its driest month. San Juan del Cesar is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, January, December, when temperatures can drop to 18°C.
Temperature
San Juan del Cesar sees moderate temperature variation throughout the year, ranging from 18°C to 29°C. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 24°C. February is the coolest month, with minimum temperatures around 18°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
San Juan del Cesar is a very wet location, receiving approximately 2463mm of precipitation annually, which averages out to around 205mm per month. The wettest month is May, averaging 408mm of rainfall. October and April also tend to see above-average precipitation. The driest month is February, with just 82mm. That's 326mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.
Wind
San Juan del Cesar 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 February, 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. Wind speeds vary significantly across the year, with a 1km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
89 days until Autumn
It is currently summer in San Juan del Cesar, which began on June 21, 2026. San Juan del Cesar 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 August at around 29°C, while the coldest stretch bottoms out in February near 18°C. Autumn is next, beginning on September 23, 2026 — 89 days from now.
Spring
Temperatures range from 19 to 28°C. Rainfall is heavy, totalling around 875mm across the season with a monthly average of 292mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 20 to 29°C. Rainfall is heavy, totalling around 483mm across the season with a monthly average of 161mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 20 to 28°C. Rainfall is heavy, totalling around 823mm across the season with a monthly average of 274mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 18 to 27°C. Precipitation is moderate at around 281mm for the season, averaging 94mm per month. Winds are generally light, averaging 2km/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 del Cesar is during January and February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 83mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 29°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 del Cesar 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.
