Climate Overview
The climate in San Ramón is warm and mild. The average annual temperature is 24°C and approximately 3127mm of precipitation falls per year. October is the wettest month, receiving around 562mm of rainfall. San Ramón is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: March, February, April. The coldest months are January, February, December, when temperatures can drop to 20°C.
Temperature
San Ramón has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is March, when average highs reach 30°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 20°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.
Precipitation
San Ramón is a very wet location, receiving approximately 3127mm of precipitation annually, which averages out to around 261mm per month. The wettest month is October, averaging 562mm of rainfall. September and June also tend to see above-average precipitation. The driest month is February, with just 14mm. That's 547mm 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
San Ramón 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 June, 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, 3km/h in summer, 3km/h in autumn.
Seasons
87 days until Winter
It is currently autumn in San Ramón, which began on September 23, 2026. San Ramón 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 March at around 30°C, while the coldest stretch bottoms out in January near 20°C. Winter is next, beginning on December 21, 2026 (87 days from now).
Spring
Temperatures range from 21 to 30°C. Rainfall is heavy, totalling around 518mm across the season with a monthly average of 173mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 21 to 27°C. Rainfall is heavy, totalling around 1116mm across the season with a monthly average of 372mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 21 to 27°C. Rainfall is heavy, totalling around 1364mm across the season with a monthly average of 455mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 20 to 29°C. Rainfall is relatively light, with around 129mm over the season and a monthly average of 43mm. Winds are generally light, averaging 6km/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 Ramón is during January, February, March and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 39mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for San Ramón 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.
