Climate Insights for San Marcos

The climate in San Marcos is warm and mild. The average annual temperature is 24°C and approximately 1,971 mm of precipitation falls per year. San Marcos receives a notable amount of rainfall throughout the year, including during its driest month. San Marcos is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, June. The coldest months are January, February, December, when temperatures can drop to 18°C.The climate in San Marcos is warm and mild. The average annual temperature is 75°F and approximately 77.6 in of precipitation falls per year. San Marcos receives a notable amount of rainfall throughout the year, including during its driest month. San Marcos is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, June. The coldest months are January, February, December, when temperatures can drop to 64°F.

San Marcos sees moderate temperature variation throughout the year, ranging from 18°C to 33°C. The warmest month is May, when average highs reach 33°C and the mean temperature sits around 26°C. January is the coolest month, with minimum temperatures around 18°C and an average of 21°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.San Marcos sees moderate temperature variation throughout the year, ranging from 64°F to 91°F. The warmest month is May, when average highs reach 91°F and the mean temperature sits around 79°F. January is the coolest month, with minimum temperatures around 64°F and an average of 70°F. On average, daily temperatures fluctuate by about 16°F between overnight lows and afternoon highs.

San Marcos is a fairly wet location, receiving approximately 1,971 mm of precipitation annually, which averages out to around 164 mm per month. The wettest month is November, averaging 263 mm of rainfall. June and October also tend to see above-average precipitation. The driest month is April, with just 65 mm. That's 198 mm less than November, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.San Marcos is a fairly wet location, receiving approximately 77.6 in of precipitation annually, which averages out to around 6.5 in per month. The wettest month is November, averaging 10.4 in of rainfall. June and October also tend to see above-average precipitation. The driest month is April, with just 2.6 in. That's 7.8 in less than November, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

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 April, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, 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 2km/h between the calmest and windiest months.San Marcos is relatively calm, with an average annual wind speed of 2mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is April, averaging 3mph, though still comfortable for most outdoor activities. The calmest conditions occur in September, 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 best time to visit San Marcos is during February and March, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 68 mm per month. By contrast, May can be uncomfortably hot with highs reaching 33°C, while January is the coldest period with lows dropping to 18°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit San Marcos is during February and March, when the weather is most comfortable for travellers. During these months, average temperatures hover around 73°F with modest rainfall averaging 2.7 in per month. By contrast, May can be uncomfortably hot with highs reaching 91°F, while January is the coldest period with lows dropping to 64°F. 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 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.