Last updated: August 27, 2025
In September, the average temperature in San Antonio, Philippines is a warm 27°C (81°F). Expect lows of 23°C (74°F) and highs reaching up to 33°C (91°F). During this month, precipitation is significant, with an average of 320 mm (12.6 in) spread over 28 days. Additionally, the average humidity sits at a steamy 85%, making for a lush and vibrant atmosphere.
In September in San Antonio, the average temperature is 27°C (81°F), with maximums reaching 33°C (91°F) and minimums dropping to 23°C (74°F). This mild climate makes it a perfect time for outdoor adventures and exploration.
In San Antonio in September, the total precipitation amount reaches 320 mm (12.6 in) over a duration of 28 days.
In San Antonio in September humidity is 85%. With an average temperature of 27°C (81°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier as sweat clings to your skin and the air feels almost tangible, which can be quite challenging for traveling.
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 (79°F) | 124 mm (4.9 inches) | 81% | extreme |
| February Weather | 26°C (80°F) | 84 mm (3.3 inches) | 78% | extreme |
| March Weather | 27°C (81°F) | 65 mm (2.6 inches) | 76% | extreme |
| April Weather | 28°C (83°F) | 50 mm (2.0 inches) | 77% | extreme |
| May Weather | 29°C (84°F) | 130 mm (5.1 inches) | 78% | extreme |
| June Weather | 28°C (83°F) | 246 mm (9.7 inches) | 80% | extreme |
| July Weather | 27°C (81°F) | 323 mm (12.7 inches) | 81% | extreme |
| August Weather | 27°C (81°F) | 335 mm (13.2 inches) | 83% | extreme |
| September Weather | 27°C (81°F) | 320 mm (12.6 inches) | 85% | extreme |
| October Weather | 27°C (81°F) | 266 mm (10.5 inches) | 80% | extreme |
| November Weather | 27°C (81°F) | 151 mm (6.0 inches) | 83% | extreme |
| December Weather | 27°C (80°F) | 171 mm (6.8 inches) | 86% | extreme |