Last updated: August 27, 2025
In September, the average temperature in San Sebastian Tenochtitlan, Mexico hovers around 17°C (62°F), with a comfortable range from a minimum of 7°C (44°F) to a pleasant maximum of 26°C (80°F). Expect some rain, as the region receives about 186 mm (7.3 in) of precipitation spread over 20 days. Don't forget, the air tends to feel quite humid, with an average humidity level of 84%!
In September in San Sebastian Tenochtitlan, the average temperature is 17°C (62°F). Maximums can reach 26°C (80°F), and minimums can be as low as 7°C (44°F). This mild climate makes San Sebastian Tenochtitlan an ideal destination for outdoor activities and sightseeing during this time of year.
In San Sebastian Tenochtitlan in September, the precipitation amount reaches 186 mm (7.3 in) over the course of 20 days.
In San Sebastian Tenochtitlan in September humidity is 84%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making travel both comforting and slightly stifling, as you navigate through a haze of thick, moisture-laden air.
In San Sebastian Tenochtitlan 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 Sebastian Tenochtitlan, you can check here.
UV Risk Categories
Weather in San Sebastian Tenochtitlan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Sebastian Tenochtitlan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 12°C (55°F) | 10 mm (0.4 inches) | 88% | very high |
| February Weather | 15°C (59°F) | 11 mm (0.5 inches) | 86% | extreme |
| March Weather | 17°C (63°F) | 18 mm (0.7 inches) | 83% | extreme |
| April Weather | 19°C (66°F) | 28 mm (1.1 inches) | 80% | extreme |
| May Weather | 20°C (68°F) | 51 mm (2.0 inches) | 82% | extreme |
| June Weather | 18°C (65°F) | 176 mm (6.9 inches) | 79% | extreme |
| July Weather | 17°C (63°F) | 155 mm (6.1 inches) | 72% | extreme |
| August Weather | 17°C (63°F) | 157 mm (6.2 inches) | 74% | extreme |
| September Weather | 17°C (62°F) | 186 mm (7.3 inches) | 84% | extreme |
| October Weather | 16°C (60°F) | 88 mm (3.5 inches) | 92% | extreme |
| November Weather | 14°C (57°F) | 23 mm (0.9 inches) | 91% | very high |
| December Weather | 13°C (55°F) | 5 mm (0.2 inches) | 91% | very high |