Last updated: March 2, 2024
The weather in San Marcos, El Salvador, during May is characterized by an average temperature of 27°C (80°F). Highs can soar to 35°C (95°F), while lows may dip to 21°C (70°F). Typically, the humidity level in San Marcos throughout May hovers around 59%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In May, San Marcos averages 269 mm (10.6 inches) of rainfall, typically over the course of 26 rainy days. The month enjoys an average of 12 hours 45 minutes of daylight, with the sun shining for approximately 10 hours 6 minutes each day. Additionally, there is a 35% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In May, 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 12:00 and 14:00, 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 | 4 | 7 | 11 | 13 | 14 | 12 | 9 | 6 | 3 | 1 | 1 | 0 |
| Exposure | Low | Moderate | High | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 25 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||