Last updated: August 23, 2025
In September, the average temperature in San Juan Cotzal, Guatemala hovers around 20°C (68°F), with comfortable lows of 14°C (57°F) and pleasant highs reaching up to 27°C (81°F). However, be prepared for some rain, as the area receives an average precipitation of 284 mm (11.2 in) over 28 days. Don't forget to account for the average humidity of 82%, which can make the air feel quite muggy!
In September in San Juan Cotzal, the average temperature is 20°C (68°F). The maximum can reach 27°C (81°F) and the minimum can be as low as 14°C (57°F). This mild climate makes it an ideal time for travelers to explore the beautiful surroundings and enjoy outdoor activities.
In San Juan Cotzal in September, the precipitation amount is 284 mm (11.2 in) during a span of 28 days.
In San Juan Cotzal in September humidity is 82%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit sluggish but surprisingly refreshing, as long as you take breaks in shaded areas to cool off.
In San Juan Cotzal in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Juan Cotzal, you can check here.
UV Risk Categories
Weather in San Juan Cotzal varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Juan Cotzal, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 16°C (61°F) | 111 mm (4.4 inches) | 76% | extreme |
| February Weather | 17°C (63°F) | 76 mm (3.0 inches) | 68% | extreme |
| March Weather | 18°C (64°F) | 56 mm (2.2 inches) | 59% | extreme |
| April Weather | 20°C (68°F) | 86 mm (3.4 inches) | 57% | extreme |
| May Weather | 21°C (70°F) | 195 mm (7.7 inches) | 65% | extreme |
| June Weather | 20°C (69°F) | 408 mm (16.1 inches) | 66% | extreme |
| July Weather | 19°C (67°F) | 202 mm (7.9 inches) | 75% | extreme |
| August Weather | 20°C (68°F) | 275 mm (10.8 inches) | 82% | extreme |
| September Weather | 20°C (68°F) | 284 mm (11.2 inches) | 82% | extreme |
| October Weather | 19°C (67°F) | 280 mm (11.0 inches) | 83% | extreme |
| November Weather | 18°C (64°F) | 198 mm (7.8 inches) | 80% | extreme |
| December Weather | 17°C (62°F) | 106 mm (4.2 inches) | 76% | very high |