July 21, 2026 · San Antonio, USA
Sunset in San Antonio today is at 20:34. Day length is 13h 47m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for San Antonio's coordinates and updated daily.
San Antonio lies at 29°N. At this latitude, day length varies moderately — from around 10 hours in midwinter to 14–15 hours in midsummer.
Sunset shifts later through spring and earlier through autumn — changing fastest near the equinoxes and slowest near the summer and winter solstices. See the year chart to visualise how sunset times shift month by month for San Antonio.
The longest day in San Antonio is around 14h 2m (around June 21). The shortest is around 10h 15m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:57 | 07:30 | 10h 27m |
| February | 18:23 | 07:15 | 11h 8m |
| March | 19:42 | 07:46 | 11h 56m |
| April | 20:00 | 07:09 | 12h 51m |
| May | 20:19 | 06:43 | 13h 36m |
| June | 20:36 | 06:35 | 14h 1m |
| July | 20:36 | 06:44 | 13h 52m |
| August | 20:17 | 07:02 | 13h 14m |
| September | 19:42 | 07:19 | 12h 23m |
| October | 19:06 | 07:35 | 11h 31m |
| November | 17:41 | 06:58 | 10h 42m |
| December | 17:38 | 07:21 | 10h 17m |