Climate Insights for San Rafael

The climate in San Rafael is temperate. The average annual temperature is 15°C and approximately 429mm of precipitation falls per year. October is the wettest month, receiving around 64mm of rainfall. San Rafael 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: January, December, February. The coldest months are July, June, August, when temperatures can drop to 1°C. Light snow can occur between May and October.

Temperatures in San Rafael vary considerably across the year, with a 29°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 30°C and the mean temperature sits around 23°C. July is the coolest month, with minimum temperatures around 1°C and an average of 6°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 5°C shift in average temperatures.

San Rafael is a relatively dry area, receiving approximately 429mm of precipitation annually, which averages out to around 36mm per month. The wettest month is October, averaging 64mm of rainfall. January and February also tend to see above-average precipitation. The driest month is July, with just 12mm. That's 53mm 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. Light snowfall can occur between May and October, totalling around 10cm annually. August is the snowiest month with approximately 3cm.

San Rafael 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 December, averaging 20km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 15km/h in winter, 19km/h in spring, 19km/h in summer, 16km/h in autumn.

It is currently autumn in San Rafael, which began on March 20, 2026. San Rafael 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 January at around 30°C, while the coldest stretch bottoms out in July near 1°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit San Rafael is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 46mm per month. By contrast, July can be quite cold with temperatures dropping to 1°C. 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 Rafael 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.