July 21, 2026 · Haikou, China
Sunrise in Haikou today is at 06:10. Day length is 13h 11m. See below for sunset, solar noon, dawn and dusk — all times calculated astronomically for Haikou's coordinates and updated daily.
Haikou lies at 20°N. Near the tropics, day length stays close to 12 hours year-round, with only minor variation between seasons.
Sunrise shifts earlier through spring and later through autumn — changing fastest near the equinoxes and barely at all near the summer and winter solstices. See the year chart to visualise how sunrise and sunset times shift month by month for Haikou.
The longest day in Haikou is around 13h 21m (around June 21). The shortest is around 10h 55m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 07:17 | 18:20 | 11h 3m |
| February | 07:09 | 18:38 | 11h 29m |
| March | 06:48 | 18:49 | 12h 0m |
| April | 06:22 | 18:57 | 12h 36m |
| May | 06:04 | 19:08 | 13h 5m |
| June | 06:00 | 19:20 | 13h 20m |
| July | 06:08 | 19:22 | 13h 14m |
| August | 06:19 | 19:09 | 12h 50m |
| September | 06:27 | 18:43 | 12h 16m |
| October | 06:34 | 18:16 | 11h 43m |
| November | 06:48 | 18:00 | 11h 12m |
| December | 07:07 | 18:02 | 10h 56m |