Climate Insights for General José de San Martín

The climate in General José de San Martín is warm and mild. The average annual temperature is 20°C and approximately 320mm of precipitation falls per year. October is the wettest month, receiving around 33mm of rainfall. General José de San Martín 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: July, June, August. The coldest months are March, May, February, when temperatures can drop to 6°C. Light snow can occur between March and March.

General José de San Martín sees moderate temperature variation throughout the year, ranging from 6°C to 25°C. July is the warmest month, though highs remain moderate at 25°C with a mean of 24°C. March is the coolest month, with minimum temperatures around 6°C and an average of 9°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between March and April, with a 11°C shift in average temperatures.

General José de San Martín is a quite dry location, receiving approximately 320mm of precipitation annually, which averages out to around 27mm per month. The wettest month is January, averaging 33mm of rainfall. March and April also tend to see above-average precipitation. The driest month is February, with just 7mm. That's 26mm 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. Light snowfall can occur between March and March, totalling around 12cm annually. March is the snowiest month with approximately 12cm.

General José de San Martín 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 January, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 5km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently winter in General José de San Martín, which began on June 21, 2026. General José de San Martín 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 July at around 25°C, while the coldest stretch bottoms out in March near 6°C. Spring is next, beginning on September 23, 2026 — 16 days from now.

The best time to visit General José de San Martín is during January, February, April, May, June, July, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 26mm per month. By contrast, March can be quite cold with temperatures dropping to 6°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for General José de San Martín 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.