Normal weather in San Marcos in September
The weather in San Marcos in September has an average temperature of around 34°C during the day. On average, September sees 211 mm of rain in San Marcos. The wind speed is 3 Beaufort and mainly comes from Southeast.
After August, September in San Marcos starts with a temperature of 33°C and ends around October at 34°C.
The hurricane season in San Marcos lasts from early June to late November.
September averages for San Marcos
 Average temperature | 34°C |
 Highest daytime temperature | 35°C |
| Lowest daytime temperature | 32°C |
 Total rainfall | 211 mm |
| Rainy days | 21 days |
Temperature per day in September in San Marcos
This graph shows the average daily maximum temperatures in September in San Marcos, indicated in degrees Celsius.
Rainfall per day in September in San Marcos
This graph shows the average daily rainfall in September in San Marcos, indicated in millimeters.
UV index per day in September in San Marcos
This graph shows the average daily UV index in September in San Marcos.
Yearly temperature in September in San Marcos
This graph shows the average yearly temperature in September in San Marcos, measured in degrees Celsius, over the past years.
Yearly total rainfall in September in San Marcos
This graph shows the average yearly rainfall in millimeters in September in San Marcos, over the past years.
Average daily weather in September
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Experiences with the weather in September in San Marcos
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Average weather in San Marcos per month
Click on a month below to see in detail how the weather typically is in San Marcos and what to expect. Based on the historical weather data of San Marcos, you can view the average temperature, rainfall, wind, and UV index for each day of the month.