Last updated: August 27, 2025
In August, the average temperature in San Juan, Mexico is a pleasant 24°C (76°F), with lows dropping to 18°C (65°F) and highs reaching up to 33°C (92°F). Expect 445 mm (17.5 in) of precipitation over the month, accompanied by an average humidity of 83%, creating a lush and vibrant atmosphere. Perfect for those who love warm, humid climates!
In August in San Juan, the average temperature is 24°C (76°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 18°C (65°F). It's the perfect time for travelers to enjoy pleasant weather while exploring all that San Juan has to offer.
In San Juan in August, the precipitation amount is 445 mm (17.5 in) over a period of 30 days.
In San Juan in August, humidity is 83%. With an average temperature of 24°C (76°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and possibly causing travelers to sweat more quickly, prompting frequent breaks in shaded areas or the search for refreshing beverages.
In San Juan 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 Juan.
UV Risk Categories
Weather in San Juan varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in San Juan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 22°C (71°F) | 2 mm (0.1 inches) | 70% | very high |
| February Weather | 23°C (74°F) | 3 mm (0.1 inches) | 65% | extreme |
| March Weather | 25°C (78°F) | 2 mm (0.1 inches) | 59% | extreme |
| April Weather | 27°C (80°F) | 0 mm (0.0 inches) | 60% | extreme |
| May Weather | 27°C (81°F) | 60 mm (2.4 inches) | 67% | extreme |
| June Weather | 25°C (78°F) | 318 mm (12.5 inches) | 80% | extreme |
| July Weather | 25°C (77°F) | 344 mm (13.5 inches) | 81% | extreme |
| August Weather | 24°C (76°F) | 445 mm (17.5 inches) | 83% | extreme |
| September Weather | 24°C (75°F) | 396 mm (15.6 inches) | 83% | extreme |
| October Weather | 24°C (75°F) | 231 mm (9.1 inches) | 80% | extreme |
| November Weather | 22°C (73°F) | 43 mm (1.7 inches) | 77% | very high |
| December Weather | 21°C (70°F) | 2 mm (0.1 inches) | 76% | very high |