Climate Insights for San Juan del Cesar

The climate in San Juan del Cesar is warm and mild. The average annual temperature is 24°C and approximately 2322mm 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, June. The coldest months are January, February, December, when temperatures can drop to 19°C.

San Juan del Cesar sees moderate temperature variation throughout the year, ranging from 19°C to 30°C. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 19°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.

San Juan del Cesar is a very wet location, receiving approximately 2322mm of precipitation annually, which averages out to around 193mm per month. The wettest month is May, averaging 336mm of rainfall. October and April also tend to see above-average precipitation. The driest month is January, with just 51mm. That's 286mm less than May, 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.

San Juan del Cesar 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 February, averaging 7km/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 speeds vary significantly across the year, with a 4km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 6km/h in winter, 5km/h in spring, 4km/h in summer, 3km/h in autumn.

It is currently autumn in San Juan del Cesar, which began on September 23, 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 30°C, while the coldest stretch bottoms out in January near 19°C. Winter is next, beginning on December 21, 2026 (87 days from now).

The best time to visit San Juan del Cesar is during January, February and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 61mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 30°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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.