July 21, 2026 · Hạ Long, Vietnam
Sunset in Hạ Long today is at 18:36. Day length is 13h 14m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Hạ Long's coordinates and updated daily.
Hạ Long lies at 21°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 Hạ Long.
The longest day in Hạ Long is around 13h 24m (around June 21). The shortest is around 10h 51m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 17:31 | 06:32 | 10h 59m |
| February | 17:50 | 06:23 | 11h 27m |
| March | 18:02 | 06:02 | 12h 0m |
| April | 18:11 | 05:34 | 12h 37m |
| May | 18:23 | 05:15 | 13h 7m |
| June | 18:35 | 05:11 | 13h 24m |
| July | 18:37 | 05:19 | 13h 18m |
| August | 18:23 | 05:31 | 12h 52m |
| September | 17:57 | 05:40 | 12h 17m |
| October | 17:29 | 05:48 | 11h 41m |
| November | 17:12 | 06:03 | 11h 9m |
| December | 17:14 | 06:21 | 10h 52m |