Last updated: August 23, 2025
In September, the average temperature in San Juan Bautista, Guatemala is a pleasant 23°C (74°F). Expect a comfortable range with minimums dipping to 18°C (65°F) and maximums reaching up to 30°C (87°F). However, be prepared for significant rainfall, as the area sees about 484 mm (19.1 in) of precipitation over 30 days, contributing to an average humidity level of 82%.
In September in San Juan Bautista, the average temperature is 23°C (74°F). Maximum temperatures can reach 30°C (87°F), while the minimum can drop to as low as 18°C (65°F). This makes San Juan Bautista a perfect destination for travelers seeking pleasant and mild weather.
In San Juan Bautista in September, the precipitation amount is 484 mm (19.1 in) over a period of 30 days.
In San Juan Bautista in September, humidity is 82%. With an average temperature of 23°C (74°F), this humidity feels like you are walking through a warm, damp blanket, making travel a bit uncomfortable and sticky as you navigate the air thick with moisture.
In San Juan Bautista in September, 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 Bautista.
UV Risk Categories
Weather in San Juan Bautista varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Juan Bautista, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 23°C (73°F) | 31 mm (1.2 inches) | 76% | extreme |
| February Weather | 23°C (75°F) | 20 mm (0.8 inches) | 68% | extreme |
| March Weather | 24°C (76°F) | 51 mm (2.0 inches) | 59% | extreme |
| April Weather | 24°C (76°F) | 147 mm (5.8 inches) | 57% | extreme |
| May Weather | 24°C (76°F) | 480 mm (18.9 inches) | 65% | extreme |
| June Weather | 24°C (75°F) | 456 mm (18.0 inches) | 66% | extreme |
| July Weather | 24°C (75°F) | 355 mm (14.0 inches) | 75% | extreme |
| August Weather | 24°C (75°F) | 414 mm (16.3 inches) | 82% | extreme |
| September Weather | 23°C (74°F) | 484 mm (19.1 inches) | 82% | extreme |
| October Weather | 23°C (74°F) | 523 mm (20.6 inches) | 83% | extreme |
| November Weather | 23°C (74°F) | 198 mm (7.8 inches) | 80% | very high |
| December Weather | 23°C (73°F) | 38 mm (1.5 inches) | 76% | very high |