Climate Overview
The climate in San Ramón is temperate. The average annual temperature is 14°C and approximately 2844mm of precipitation falls per year. San Ramón receives a notable amount of rainfall throughout the year, including during its driest month. San Ramón is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: November, April, January. The coldest months are July, August, June, when temperatures can drop to 8°C.
Temperature
San Ramón sees moderate temperature variation throughout the year, ranging from 8°C to 19°C. November is the warmest month, though highs remain moderate at 19°C with a mean of 15°C. July is the coolest month, with minimum temperatures around 8°C and an average of 13°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.
Precipitation
San Ramón is a very wet location, receiving approximately 2844mm of precipitation annually, which averages out to around 237mm per month. The wettest month is February, averaging 495mm of rainfall. January and December also tend to see above-average precipitation. The driest month is July, with just 59mm. That's 435mm less than February, 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 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0km/h between the calmest and windiest months.
Seasons
3 days until Winter
It is currently autumn in San Ramón, which began on March 20, 2026. San Ramón is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in November at around 19°C, while the coldest stretch bottoms out in July near 8°C. Winter is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 10 to 19°C. Rainfall is heavy, totalling around 549mm across the season with a monthly average of 183mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 12 to 19°C. Rainfall is heavy, totalling around 1349mm across the season with a monthly average of 450mm. Winds are generally light, averaging 1km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 10 to 19°C. Rainfall is heavy, totalling around 714mm across the season with a monthly average of 238mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 8 to 18°C. Precipitation is moderate at around 232mm for the season, averaging 77mm per month. Winds are generally light, averaging 1km/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 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.
