July 20, 2026 · San Luis, Argentina
San Luis has 10h 14m of daylight today. Sunrise is at 08:25 and sunset is at 18:39. All times are calculated astronomically for San Luis's exact coordinates.
San Luis lies at 33°S. At this latitude, day length varies moderately — from around 10 hours in midwinter to 14–15 hours in midsummer.
Day length changes fastest near the spring and autumn equinoxes and slowest near the longest day and shortest day of the year. See the year chart to visualise how daylight hours shift month by month for San Luis, or see daylight hours for every day of the year.
The longest day in San Luis is around 14h 21m (around December 21). The shortest is around 9h 57m (around June 21). Days are currently getting longer — gaining about 1 minute per day.
| Month | Day length | Sunrise | Sunset |
|---|---|---|---|
| January | 14h 8m | 06:31 | 20:39 |
| February | 13h 18m | 07:01 | 20:19 |
| March | 12h 21m | 07:25 | 19:46 |
| April | 11h 18m | 07:47 | 19:05 |
| May | 10h 26m | 08:09 | 18:36 |
| June | 9h 58m | 08:28 | 18:25 |
| July | 10h 8m | 08:28 | 18:36 |
| August | 10h 51m | 08:05 | 18:56 |
| September | 11h 50m | 07:27 | 19:17 |
| October | 12h 51m | 06:46 | 19:38 |
| November | 13h 49m | 06:16 | 20:05 |
| December | 14h 20m | 06:11 | 20:31 |