July 21, 2026 · Surabaya, Indonesia
Sunset in Surabaya today is at 17:29. Day length is 11h 45m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Surabaya's coordinates and updated daily.
Surabaya lies at 7°S. 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 Surabaya.
The longest day in Surabaya is around 12h 33m (around December 21). The shortest is around 11h 42m (around June 21).
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:54 | 05:24 | 12h 30m |
| February | 17:54 | 05:34 | 12h 20m |
| March | 17:43 | 05:34 | 12h 9m |
| April | 17:28 | 05:31 | 11h 57m |
| May | 17:20 | 05:33 | 11h 47m |
| June | 17:21 | 05:39 | 11h 42m |
| July | 17:28 | 05:43 | 11h 44m |
| August | 17:31 | 05:38 | 11h 52m |
| September | 17:27 | 05:24 | 12h 3m |
| October | 17:23 | 05:08 | 12h 15m |
| November | 17:28 | 05:01 | 12h 26m |
| December | 17:41 | 05:09 | 12h 32m |