Climate Overview
The climate in San Ramón is temperate. The average annual temperature is 12°C and approximately 2172mm 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, October. The coldest months are July, August, June, when temperatures can drop to 6°C.
Temperature
San Ramón sees moderate temperature variation throughout the year, ranging from 6°C to 17°C. November is the warmest month, though highs remain moderate at 17°C with a mean of 13°C. July is the coolest month, with minimum temperatures around 6°C and an average of 11°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 2172mm of precipitation annually, which averages out to around 181mm per month. The wettest month is January, averaging 368mm of rainfall. February and December also tend to see above-average precipitation. The driest month is July, with just 38mm. That's 330mm less than January, 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 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, 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 1km/h between the calmest and windiest months.
Seasons
89 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 17°C, while the coldest stretch bottoms out in July near 6°C. Winter is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 8 to 17°C. Rainfall is heavy, totalling around 451mm across the season with a monthly average of 150mm. Winds are generally light, averaging 9km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 10 to 17°C. Rainfall is heavy, totalling around 1017mm across the season with a monthly average of 339mm. Winds are generally light, averaging 8km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 8 to 17°C. Rainfall is heavy, totalling around 541mm across the season with a monthly average of 180mm. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 6 to 16°C. Precipitation is moderate at around 164mm for the season, averaging 55mm per month. Winds are generally light, averaging 9km/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.
