April Weather in San Marcos

Last updated: March 2, 2024

The weather in San Marcos, United States, during April is characterized by an average temperature of 16°C (62°F). Highs can soar to 30°C (86°F), while lows may dip to 9°C (48°F). Typically, the humidity level in San Marcos throughout April hovers around 56%.

9°C (48°F)

Minimum temperature

16°C (62°F)

Average temperature

30°C (86°F)

Maximum temperature

56%

Humidity

Precipitation and Sunshine hours

In April, San Marcos averages 32 mm (1.3 inches) of rainfall, typically over the course of 3 rainy days. The month enjoys an average of 13 hours 1 minutes of daylight, with the sun shining for approximately 10 hours 48 minutes each day. Additionally, there is a 51% probability of sunny days during this period.

32 mm (1.3 inches)

Precipitation

3 rainy days

Rainy days

10 hours 48 minutes

Sunshine hours

51%

Chance of sun

UV Index

In April, the UV Index in San Marcos reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 2 3 6 8 10 10 9 7 4 2 1 1
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

Compare San Marcos's Climate with Cities Worldwide