July 21, 2026 · Surabaya, Indonesia
Surabaya has 11h 45m of daylight today. Sunrise is at 05:43 and sunset is at 17:29. All times are calculated astronomically for Surabaya's exact coordinates.
Surabaya lies at 7°S. Near the tropics, day length stays close to 12 hours year-round, with only minor variation between seasons.
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 Surabaya, or see daylight hours for every day of the year.
The longest day in Surabaya is around 12h 33m (around December 21). The shortest is around 11h 42m (around June 21).
| Month | Day length | Sunrise | Sunset |
|---|---|---|---|
| January | 12h 30m | 05:24 | 17:54 |
| February | 12h 20m | 05:34 | 17:54 |
| March | 12h 9m | 05:34 | 17:43 |
| April | 11h 57m | 05:31 | 17:28 |
| May | 11h 47m | 05:33 | 17:20 |
| June | 11h 42m | 05:39 | 17:21 |
| July | 11h 44m | 05:43 | 17:28 |
| August | 11h 52m | 05:38 | 17:31 |
| September | 12h 3m | 05:24 | 17:27 |
| October | 12h 15m | 05:08 | 17:23 |
| November | 12h 26m | 05:01 | 17:28 |
| December | 12h 32m | 05:09 | 17:41 |