Last updated: August 27, 2025
In San Antonio, Philippines, the average temperature in September hovers around 27°C (82°F). Expect balmy days with temperatures ranging from a minimum of 25°C (78°F) to a maximum of 30°C (86°F). However, be prepared for some rain, as 111 mm (4.4 in) of precipitation is spread over 19 days, contributing to an average humidity of 85%.
In September in San Antonio, the average temperature is 27°C (82°F). Maximums can reach 30°C (86°F) and minimums can be as low as 25°C (78°F). This pleasant climate makes San Antonio an ideal destination for travelers looking to enjoy warm weather and outdoor activities.
In San Antonio in September, the precipitation amount is 111 mm (4.4 in) over a span of 19 days.
In San Antonio in September humidity is 85%. With an average temperature of 27°C (82°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit more challenging and encouraging travelers to seek shade and stay hydrated.
In San Antonio in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. 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 | 26°C (80°F) | 189 mm (7.4 inches) | 90% | extreme |
| February Weather | 26°C (80°F) | 117 mm (4.6 inches) | 92% | extreme |
| March Weather | 27°C (80°F) | 123 mm (4.8 inches) | 90% | extreme |
| April Weather | 27°C (81°F) | 94 mm (3.7 inches) | 87% | extreme |
| May Weather | 27°C (81°F) | 168 mm (6.6 inches) | 83% | extreme |
| June Weather | 27°C (82°F) | 150 mm (5.9 inches) | 83% | extreme |
| July Weather | 27°C (82°F) | 173 mm (6.8 inches) | 82% | extreme |
| August Weather | 27°C (82°F) | 135 mm (5.3 inches) | 83% | extreme |
| September Weather | 27°C (82°F) | 111 mm (4.4 inches) | 85% | extreme |
| October Weather | 28°C (82°F) | 137 mm (5.4 inches) | 82% | extreme |
| November Weather | 27°C (81°F) | 99 mm (3.9 inches) | 83% | extreme |
| December Weather | 27°C (81°F) | 132 mm (5.2 inches) | 87% | extreme |