Last updated: August 23, 2025
In San Antonio, Honduras, the average temperature in September hovers around 25°C (78°F), making it a pleasant time of year. Daily temperatures can vary, with a minimum of 19°C (66°F) and a maximum reaching 33°C (92°F). Expect some rain, as 183 mm (7.2 in) of precipitation typically falls over 27 days, contributing to an average humidity level of 75%.
In September in San Antonio, the average temperature is 25°C (78°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 19°C (66°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy all that San Antonio has to offer.
In San Antonio in September, the total precipitation amount is 183 mm (7.2 in) spread over 27 days.
In San Antonio in September, humidity is 75%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket enveloping you, making travel feel sticky and heavy, but also vibrant and alive, as the air is saturated with the scents of the surroundings and the energy of the environment.
In San Antonio 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 Antonio.
UV Risk Categories
Weather in San Antonio varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 21°C (71°F) | 155 mm (6.1 inches) | 78% | very high |
| February Weather | 22°C (72°F) | 80 mm (3.1 inches) | 74% | extreme |
| March Weather | 23°C (74°F) | 67 mm (2.6 inches) | 67% | extreme |
| April Weather | 25°C (77°F) | 71 mm (2.8 inches) | 61% | extreme |
| May Weather | 26°C (79°F) | 135 mm (5.3 inches) | 59% | extreme |
| June Weather | 26°C (79°F) | 207 mm (8.1 inches) | 61% | extreme |
| July Weather | 26°C (78°F) | 133 mm (5.2 inches) | 68% | extreme |
| August Weather | 25°C (78°F) | 175 mm (6.9 inches) | 70% | extreme |
| September Weather | 25°C (78°F) | 183 mm (7.2 inches) | 75% | extreme |
| October Weather | 24°C (76°F) | 281 mm (11.1 inches) | 81% | extreme |
| November Weather | 22°C (73°F) | 333 mm (13.1 inches) | 82% | very high |
| December Weather | 21°C (71°F) | 179 mm (7.1 inches) | 75% | very high |