Climate Insights for San Bernardo

The climate in San Bernardo is warm and mild. The average annual temperature is 22°C and approximately 1131mm of precipitation falls per year. San Bernardo receives a notable amount of rainfall throughout the year, including during its driest month. San Bernardo 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 10°C.

Temperatures in San Bernardo vary considerably across the year, with a 23°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 33°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 10°C and an average of 15°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.

San Bernardo is a moderately rainy area, receiving approximately 1131mm of precipitation annually, which averages out to around 94mm per month. The wettest month is January, averaging 164mm of rainfall. November and April also tend to see above-average precipitation. The driest month is June, with just 34mm. That's 130mm less than January, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

San Bernardo is relatively calm, with an average annual wind speed of 3km/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 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 3km/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.

It is currently winter in San Bernardo, which began on June 21, 2026. San Bernardo 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 33°C, while the coldest stretch bottoms out in July near 10°C. Spring is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit San Bernardo is during May, June, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 55mm per month. By contrast, January can be uncomfortably hot with highs reaching 33°C, while July is the coldest period with lows dropping to 10°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 Bernardo 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.