Climate Insights for San Marcos

The climate in San Marcos is hot. The average annual temperature is 25°C and approximately 3,042 mm of precipitation falls per year. San Marcos receives a notable amount of rainfall throughout the year, including during its driest month. San Marcos sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in San Marcos is hot. The average annual temperature is 77°F and approximately 119.8 in of precipitation falls per year. San Marcos receives a notable amount of rainfall throughout the year, including during its driest month. San Marcos sits near the equator, so seasonal temperature differences are minimal throughout the year.

San Marcos has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is September, when average highs reach 30°C and the mean temperature sits around 25°C. July is the coolest month, with minimum temperatures around 21°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.San Marcos has relatively stable temperatures year-round, staying within a 16°F range. The warmest month is September, when average highs reach 87°F and the mean temperature sits around 78°F. July is the coolest month, with minimum temperatures around 71°F and an average of 75°F. Daily temperature variation is modest, with an average difference of 13°F between highs and lows.

San Marcos is a very wet location, receiving approximately 3,042 mm of precipitation annually, which averages out to around 254 mm per month. The wettest month is May, averaging 390 mm of rainfall. June and April also tend to see above-average precipitation. The driest month is January, with just 159 mm. That's 231 mm less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.San Marcos is a very wet location, receiving approximately 119.8 in of precipitation annually, which averages out to around 10 in per month. The wettest month is May, averaging 15.4 in of rainfall. June and April also tend to see above-average precipitation. The driest month is January, with just 6.3 in. That's 9.1 in less than May, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.

San Marcos 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 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 4km/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.San Marcos is relatively calm, with an average annual wind speed of 3mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is January, averaging 3mph, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 2mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1mph between the calmest and windiest months.

The table below shows monthly climate averages for San Marcos 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.The table below shows monthly climate averages for San Marcos based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.