Climate Insights for San Carlos

The climate in San Carlos is temperate. The average annual temperature is 17°C and approximately 984mm of precipitation falls per year. San Carlos receives a notable amount of rainfall throughout the year, including during its driest month. San Carlos 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, February, December. The coldest months are July, August, June, when temperatures can drop to 8°C.

San Carlos sees moderate temperature variation throughout the year, ranging from 8°C to 27°C. The warmest month is January, when average highs reach 27°C and the mean temperature sits around 23°C. July is the coolest month, with minimum temperatures around 8°C and an average of 11°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.

San Carlos is a moderately rainy area, receiving approximately 984mm of precipitation annually, which averages out to around 82mm per month. The wettest month is August, averaging 99mm of rainfall. July and April also tend to see above-average precipitation. The driest month is November, with just 67mm. That's 32mm less than August, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

San Carlos is moderately windy, with an average annual wind speed of 22km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 24km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 21km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

It is currently autumn in San Carlos, which began on March 20, 2026. San Carlos 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 27°C, while the coldest stretch bottoms out in July near 8°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit San Carlos is during January, February, March, April, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 82mm per month. By contrast, July can be quite cold with temperatures dropping to 8°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for San Carlos 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.