Climate Insights for San Ramón

The climate in San Ramón is warm and mild. The average annual temperature is 23°C and approximately 1194mm of precipitation falls per year. October is the wettest month, receiving around 236mm of rainfall. San Ramón is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, May, March. The coldest months are February, January, March, when temperatures can drop to 17°C.

San Ramón sees moderate temperature variation throughout the year, ranging from 17°C to 30°C. The warmest month is April, when average highs reach 30°C and the mean temperature sits around 24°C. February is the coolest month, with minimum temperatures around 17°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.

San Ramón is a moderately rainy area, receiving approximately 1194mm of precipitation annually, which averages out to around 100mm per month. The wettest month is October, averaging 236mm of rainfall. May and June also tend to see above-average precipitation. The driest month is February, with just 9mm. That's 227mm 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.

San Ramón is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 22km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in October, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 21km/h in winter, 17km/h in spring, 17km/h in summer, 14km/h in autumn.

It is currently spring in San Ramón, which began on March 20, 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 April at around 30°C, while the coldest stretch bottoms out in February near 17°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit San Ramón is during January, February, March, April, July, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 38mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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.