Last updated: August 23, 2025
In August, the average temperature in San Marcos, Guatemala hovers around 16°C (62°F), with a comfortable minimum of 9°C (49°F) and a pleasant maximum of 23°C (74°F). Expect 358 mm (14.1 in) of precipitation over 30 days, contributing to an average humidity of 82%. Perfect for cozy indoor activities or exploring the lush landscapes!
In August in San Marcos, the average temperature is 16°C (62°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop to as low as 9°C (49°F). This makes it a pleasant time for travelers to enjoy outdoor activities while being prepared for cooler evenings.
In San Marcos in August, the total precipitation amount is 358 mm (14.1 in) over the course of 30 days.
In San Marcos in August, humidity is 82%. With an average temperature of 16°C (62°F), this humidity feels like a blanket of warmth enveloping you, making traveling feel sticky and heavy as you navigate through the air.
In San Marcos in August, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in San Marcos.
UV Risk Categories
Weather in San Marcos varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in San Marcos, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 14°C (58°F) | 31 mm (1.2 inches) | 76% | extreme |
| February Weather | 15°C (59°F) | 29 mm (1.1 inches) | 68% | extreme |
| March Weather | 16°C (61°F) | 57 mm (2.2 inches) | 59% | extreme |
| April Weather | 16°C (62°F) | 124 mm (4.9 inches) | 57% | extreme |
| May Weather | 17°C (63°F) | 381 mm (15.0 inches) | 65% | extreme |
| June Weather | 16°C (62°F) | 453 mm (17.8 inches) | 66% | extreme |
| July Weather | 16°C (62°F) | 220 mm (8.7 inches) | 75% | extreme |
| August Weather | 16°C (62°F) | 358 mm (14.1 inches) | 82% | extreme |
| September Weather | 16°C (61°F) | 417 mm (16.4 inches) | 82% | extreme |
| October Weather | 16°C (61°F) | 326 mm (12.8 inches) | 83% | extreme |
| November Weather | 16°C (60°F) | 85 mm (3.4 inches) | 80% | extreme |
| December Weather | 15°C (59°F) | 38 mm (1.5 inches) | 76% | very high |