Last updated: March 2, 2024
The weather in San Juan Vallarta, Mexico, during August is characterized by an average temperature of 21°C (71°F). Highs can soar to 30°C (87°F), while lows may dip to 14°C (57°F). Typically, the humidity level in San Juan Vallarta throughout August hovers around 70%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In August, San Juan Vallarta averages 254 mm (10.0 inches) of rainfall, typically over the course of 25 rainy days. The month enjoys an average of 12 hours 43 minutes of daylight, with the sun shining for approximately 10 hours 11 minutes each day. Additionally, there is a 31% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In August, the UV Index in San Juan Vallarta reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 | 0 | 1 | 2 | 5 | 8 | 12 | 14 | 14 | 12 | 9 | 5 | 2 | 1 |
| 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 | ||||||