Last updated: August 27, 2025
In September, the average temperature in San Miguel Amatitlan, Mexico hovers around 22°C (72°F), offering a pleasant climate. Temperatures can vary from a cool 14°C (57°F) to a warm 33°C (91°F), making it ideal for various activities. However, be prepared for 227 mm (8.9 in) of precipitation over 22 days, contributing to an average humidity level of 82%. Whether you're exploring the outdoors or enjoying indoor activities, this month promises a unique experience!
In September in San Miguel Amatitlan, the average temperature is 22°C (72°F). Maximums can reach 33°C (91°F) and minimums can be as low as 14°C (57°F). This makes it a comfortable time for traveling, with pleasant days and cooler nights.
In San Miguel Amatitlan in September, the precipitation amount reaches 227 mm (8.9 in) over the course of 22 days.
In San Miguel Amatitlan in September humidity is 82%. With an average temperature of 22°C (72°F), this humidity feels like walking through a warm, damp blanket, making travel feel more exhausting and sticky as sweat clings to your skin, and every step seems to draw you into a slow, sultry embrace.
In San Miguel Amatitlan 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 Miguel Amatitlan, you can check here.
UV Risk Categories
Weather in San Miguel Amatitlan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Miguel Amatitlan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 19°C (66°F) | 2 mm (0.1 inches) | 65% | very high |
| February Weather | 21°C (70°F) | 1 mm (0.0 inches) | 61% | extreme |
| March Weather | 23°C (73°F) | 4 mm (0.2 inches) | 59% | extreme |
| April Weather | 24°C (76°F) | 11 mm (0.4 inches) | 62% | extreme |
| May Weather | 25°C (77°F) | 49 mm (1.9 inches) | 73% | extreme |
| June Weather | 23°C (74°F) | 164 mm (6.4 inches) | 78% | extreme |
| July Weather | 22°C (73°F) | 122 mm (4.8 inches) | 79% | extreme |
| August Weather | 23°C (73°F) | 166 mm (6.5 inches) | 82% | extreme |
| September Weather | 22°C (72°F) | 227 mm (8.9 inches) | 82% | extreme |
| October Weather | 22°C (71°F) | 64 mm (2.5 inches) | 79% | extreme |
| November Weather | 21°C (69°F) | 9 mm (0.3 inches) | 72% | very high |
| December Weather | 19°C (67°F) | 1 mm (0.0 inches) | 70% | very high |