Sunrise & Sunset Times in San Antonio — September 2025
Complete sunrise and sunset schedule for every day in San Antonio, United States during September 2025. Includes solar noon, day length, and daily dawn and dusk times. Coordinates: 29.42°, -98.49°.
Sunrise & Sunset in San Antonio During September
September contains the autumn equinox around the 22nd, when day and night are again nearly equal in San Antonio. Daylight is decreasing at its fastest rate — up to three or four minutes lost per day near the equinox. Many regions end daylight saving time late in the month or in October, which shifts sunset an hour earlier on the clock. The lower sun angle creates longer shadows and richer golden-hour color, signaling the transition to the cooler, darker months ahead.
Golden Hour & Twilight in September
During September, golden hour in San Antonio lasts approximately 50 minutes each morning and evening. The low sun angle during these periods produces warm, directional light prized by photographers and filmmakers. Civil twilight — the period when the sun is just below the horizon — adds extra usable light before sunrise and after sunset, extending the practical daylight window beyond the times shown in the table above.
Through September, days in San Antonio are shortening by roughly 1.7 minutes per day, adding up to about 0h 50m over the course of the month.
Daily Sunrise & Sunset — September 2025
| Date | Day | Sunrise | Sunset | Day Length | Solar Noon |
|---|---|---|---|---|---|
| Sep 1 | Mon | 07:11 AM | 07:56 PM | 12h 45m | 01:34 PM |
| Sep 2 | Tue | 07:11 AM | 07:55 PM | 12h 44m | 01:33 PM |
| Sep 3 | Wed | 07:12 AM | 07:54 PM | 12h 42m | 01:33 PM |
| Sep 4 | Thu | 07:12 AM | 07:53 PM | 12h 40m | 01:33 PM |
| Sep 5 | Fri | 07:13 AM | 07:52 PM | 12h 39m | 01:32 PM |
| Sep 6 | Sat | 07:13 AM | 07:50 PM | 12h 37m | 01:32 PM |
| Sep 7 | Sun | 07:14 AM | 07:49 PM | 12h 35m | 01:32 PM |
| Sep 8 | Mon | 07:15 AM | 07:48 PM | 12h 33m | 01:31 PM |
| Sep 9 | Tue | 07:15 AM | 07:47 PM | 12h 32m | 01:31 PM |
| Sep 10 | Wed | 07:16 AM | 07:46 PM | 12h 30m | 01:31 PM |
| Sep 11 | Thu | 07:16 AM | 07:44 PM | 12h 28m | 01:30 PM |
| Sep 12 | Fri | 07:17 AM | 07:43 PM | 12h 26m | 01:30 PM |
| Sep 13 | Sat | 07:17 AM | 07:42 PM | 12h 25m | 01:29 PM |
| Sep 14 | Sun | 07:18 AM | 07:41 PM | 12h 23m | 01:29 PM |
| Sep 15 | Mon | 07:18 AM | 07:39 PM | 12h 21m | 01:29 PM |
| Sep 16 | Tue | 07:19 AM | 07:38 PM | 12h 20m | 01:28 PM |
| Sep 17 | Wed | 07:19 AM | 07:37 PM | 12h 18m | 01:28 PM |
| Sep 18 | Thu | 07:20 AM | 07:36 PM | 12h 16m | 01:28 PM |
| Sep 19 | Fri | 07:20 AM | 07:34 PM | 12h 14m | 01:27 PM |
| Sep 20 | Sat | 07:21 AM | 07:33 PM | 12h 13m | 01:27 PM |
| Sep 21 | Sun | 07:21 AM | 07:32 PM | 12h 11m | 01:27 PM |
| Sep 22 | Mon | 07:22 AM | 07:31 PM | 12h 9m | 01:26 PM |
| Sep 23 | Tue | 07:22 AM | 07:30 PM | 12h 7m | 01:26 PM |
| Sep 24 | Wed | 07:23 AM | 07:28 PM | 12h 5m | 01:26 PM |
| Sep 25 | Thu | 07:23 AM | 07:27 PM | 12h 4m | 01:25 PM |
| Sep 26 | Fri | 07:24 AM | 07:26 PM | 12h 2m | 01:25 PM |
| Sep 27 | Sat | 07:24 AM | 07:25 PM | 12h 0m | 01:25 PM |
| Sep 28 | Sun | 07:25 AM | 07:23 PM | 11h 58m | 01:24 PM |
| Sep 29 | Mon | 07:26 AM | 07:22 PM | 11h 57m | 01:24 PM |
| Sep 30 | Tue | 07:26 AM | 07:21 PM | 11h 55m | 01:24 PM |