Last updated: March 2, 2024
The weather in San Marcos, Costa Rica, during August is characterized by an average temperature of 18°C (65°F). Highs can soar to 24°C (76°F), while lows may dip to 14°C (58°F). Typically, the humidity level in San Marcos throughout August hovers around 82%.
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Average temperature
Maximum temperature
Humidity
In August, San Marcos averages 403 mm (15.9 inches) of rainfall, typically over the course of 30 rainy days. The month enjoys an average of 12 hours 24 minutes of daylight, with the sun shining for approximately 7 hours 10 minutes each day. Additionally, there is a 5% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In August, the UV Index in San Marcos reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 10 minutes.
| 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 | 2 | 5 | 8 | 12 | 14 | 14 | 12 | 9 | 5 | 2 | 1 | 0 | 0 |
| Exposure | Low | Moderate | VeryHigh | Extreme | VeryHigh | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 15 min | 30 min | 45 min | ||||||