Climate Insights for San Jerónimo

The climate in San Jerónimo is warm and mild. The average annual temperature is 22°C and approximately 2355mm of precipitation falls per year. San Jerónimo receives a notable amount of rainfall throughout the year, including during its driest month. San Jerónimo 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 16°C.

San Jerónimo sees moderate temperature variation throughout the year, ranging from 16°C to 30°C. The warmest month is May, when average highs reach 30°C and the mean temperature sits around 24°C. January is the coolest month, with minimum temperatures around 16°C and an average of 19°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.

San Jerónimo is a very wet location, receiving approximately 2355mm of precipitation annually, which averages out to around 196mm per month. The wettest month is September, averaging 303mm of rainfall. June and October also tend to see above-average precipitation. The driest month is February, with just 79mm. That's 224mm less than September, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

San Jerónimo is relatively calm, with an average annual wind speed of 9km/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 10km/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. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently spring in San Jerónimo, which began on March 20, 2026. San Jerónimo 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 30°C, while the coldest stretch bottoms out in January near 16°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit San Jerónimo is during February, March and April, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 85mm per month. By contrast, May can be uncomfortably hot with highs reaching 30°C, while January is the coldest period with lows dropping to 16°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.

The table below shows monthly climate averages for San Jerónimo 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.