Last updated: August 27, 2025
In August, the average temperature in San Guillermo, Mexico is a pleasant 25°C (78°F), making it an inviting time to visit. However, temperatures can vary, with a minimum of 14°C (57°F) and a maximum soaring to 37°C (98°F). Be prepared for some rain, as you'll likely encounter about 66 mm (2.6 in) of precipitation over 10 days. With an average humidity of 70%, it's advisable to plan your activities accordingly!
In August in San Guillermo, the average temperature is 25°C (78°F). Maximum can reach 37°C (98°F), and minimum can be as low as 14°C (57°F). This makes it a great time to explore outdoor activities, so pack accordingly for both warm days and cooler evenings.
In San Guillermo in August, the precipitation amount is 66 mm (2.6 in) over the course of 10 days.
In San Guillermo in August humidity is 70%. With an average temperature of 25°C (78°F), this humidity feels like a warm embrace, making traveling feel both sultry and invigorating as the air wraps around you, encouraging slower-paced exploration amidst the vibrant surroundings.
In San Guillermo in August, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Guillermo.
UV Risk Categories
Weather in San Guillermo varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in San Guillermo, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 10°C (51°F) | 6 mm (0.2 inches) | 78% | high |
| February Weather | 13°C (56°F) | 5 mm (0.2 inches) | 71% | very high |
| March Weather | 17°C (63°F) | 4 mm (0.2 inches) | 60% | extreme |
| April Weather | 21°C (70°F) | 5 mm (0.2 inches) | 52% | extreme |
| May Weather | 25°C (77°F) | 6 mm (0.2 inches) | 49% | extreme |
| June Weather | 28°C (83°F) | 30 mm (1.2 inches) | 50% | extreme |
| July Weather | 26°C (79°F) | 79 mm (3.1 inches) | 65% | extreme |
| August Weather | 25°C (78°F) | 66 mm (2.6 inches) | 70% | extreme |
| September Weather | 22°C (73°F) | 87 mm (3.4 inches) | 79% | extreme |
| October Weather | 19°C (67°F) | 34 mm (1.3 inches) | 77% | very high |
| November Weather | 15°C (60°F) | 14 mm (0.6 inches) | 83% | very high |
| December Weather | 11°C (51°F) | 18 mm (0.7 inches) | 84% | high |