Climate Overview
The climate in El Rosario is hot. The average annual temperature is 28°C and approximately 1542mm of precipitation falls per year. October is the wettest month, receiving around 404mm of rainfall. El Rosario is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, March, February. The coldest months are January, February, October, when temperatures can drop to 25°C.
Temperature
El Rosario has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is April, when average highs reach 33°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 25°C and an average of 28°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.
Precipitation
El Rosario is a fairly wet location, receiving approximately 1542mm of precipitation annually, which averages out to around 128mm per month. The wettest month is October, averaging 404mm of rainfall. May and September also tend to see above-average precipitation. The driest month is March, with just 0mm. That's 403mm less than October, 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
El Rosario is relatively calm, with an average annual wind speed of 5km/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 October, 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.
Seasons
93 days until Autumn
It is currently summer in El Rosario, which began on June 21, 2026. El Rosario 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 April at around 33°C, while the coldest stretch bottoms out in January near 25°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 25 to 33°C. Rainfall is heavy, totalling around 314mm across the season with a monthly average of 105mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 26 to 31°C. Rainfall is heavy, totalling around 437mm across the season with a monthly average of 146mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 31°C. Rainfall is heavy, totalling around 774mm across the season with a monthly average of 258mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 25 to 32°C. Precipitation is minimal, with only around 16mm for the entire season. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for El Rosario 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.
