Last updated: August 23, 2025
In September, the average temperature in San Antonio, Honduras is a pleasant 25°C (77°F), making it a perfect time to explore. Expect minimums of 18°C (64°F) and maximums reaching up to 34°C (94°F). However, be prepared for some rain, with 143 mm (5.6 in) of precipitation over approximately 22 days. The typical humidity hovers around 75%, adding a touch of tropical feel to your experience.
In September in San Antonio, the average temperature is 25°C (77°F). Maximum temperatures can reach 34°C (94°F), while the minimum can drop to as low as 18°C (64°F). This mild climate makes San Antonio a great destination for outdoor activities and exploration during this time of year.
In San Antonio in September, the total precipitation amount is 143 mm (5.6 in) spread over 22 days.
In San Antonio in September humidity is 75%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket, enveloping you and making travel somewhat taxing, as every step can feel heavier and the air thicker, often leading to a desire for shade and cool breezes.
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 | 20°C (69°F) | 67 mm (2.6 inches) | 78% | extreme |
| February Weather | 22°C (71°F) | 28 mm (1.1 inches) | 74% | extreme |
| March Weather | 23°C (73°F) | 37 mm (1.5 inches) | 67% | extreme |
| April Weather | 25°C (77°F) | 53 mm (2.1 inches) | 61% | extreme |
| May Weather | 25°C (78°F) | 142 mm (5.6 inches) | 59% | extreme |
| June Weather | 25°C (77°F) | 147 mm (5.8 inches) | 61% | extreme |
| July Weather | 25°C (77°F) | 83 mm (3.2 inches) | 68% | extreme |
| August Weather | 25°C (76°F) | 125 mm (4.9 inches) | 70% | extreme |
| September Weather | 25°C (77°F) | 143 mm (5.6 inches) | 75% | extreme |
| October Weather | 23°C (74°F) | 214 mm (8.4 inches) | 81% | extreme |
| November Weather | 21°C (71°F) | 192 mm (7.6 inches) | 82% | very high |
| December Weather | 20°C (69°F) | 73 mm (2.9 inches) | 75% | very high |