Climate Insights for San Jerónimo

The climate in San Jerónimo is temperate. The average annual temperature is 17°C and approximately 196mm of precipitation falls per year. July is the wettest month, receiving around 33mm of rainfall. San Jerónimo sits near the equator, so seasonal temperature differences are minimal throughout the year.

San Jerónimo sees moderate temperature variation throughout the year, ranging from 5°C to 22°C. April is the warmest month, though highs remain moderate at 22°C with a mean of 13°C. May is the coolest month, with minimum temperatures around 5°C and an average of 12°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between May and June, with a 9°C shift in average temperatures.

San Jerónimo is a quite dry location, receiving approximately 196mm of precipitation annually, which averages out to around 16mm per month. The wettest month is July, averaging 33mm of rainfall. November and February also tend to see above-average precipitation. The driest month is April, with just 0mm. That's 33mm less than July, 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 Jerónimo is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, 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 8km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently summer in San Jerónimo, which began on June 21, 2026. San Jerónimo sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in April at around 22°C, while the coldest stretch bottoms out in May near 5°C. Autumn is next, beginning on September 23, 2026 — 16 days from now.

The best time to visit San Jerónimo is during January, February, June, July, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 21mm per month. By contrast, April can be uncomfortably hot with highs reaching 22°C, while May is the coldest period with lows dropping to 5°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

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.