July 20, 2026 · San Marcos, Guatemala
Sunset in San Marcos today is at 18:41. Day length is 12h 54m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for San Marcos's coordinates and updated daily.
San Marcos lies at 15°N. Near the tropics, day length stays close to 12 hours year-round, with only minor variation between seasons.
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 Marcos.
The longest day in San Marcos is around 13h 1m (around June 21). The shortest is around 11h 14m (around December 21).
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:57 | 06:37 | 11h 20m |
| February | 18:12 | 06:33 | 11h 39m |
| March | 18:18 | 06:16 | 12h 2m |
| April | 18:22 | 05:54 | 12h 27m |
| May | 18:29 | 05:40 | 12h 49m |
| June | 18:38 | 05:38 | 13h 0m |
| July | 18:42 | 05:46 | 12h 56m |
| August | 18:32 | 05:54 | 12h 38m |
| September | 18:11 | 05:57 | 12h 14m |
| October | 17:48 | 05:59 | 11h 49m |
| November | 17:36 | 06:09 | 11h 27m |
| December | 17:40 | 06:25 | 11h 15m |