July 21, 2026 · Coleraine, Northern Ireland
Sunset in Coleraine today is at 21:51. Day length is 16h 34m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Coleraine's coordinates and updated daily.
Coleraine lies at 55°N. At this latitude, day length varies significantly through the year — from roughly 7–8 hours in midwinter to 16–17 hours at midsummer.
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 Coleraine.
The longest day in Coleraine is around 17h 24m (around June 21). The shortest is around 7h 8m (around December 21). Days are currently getting shorter — losing about 3 minutes per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 16:27 | 08:45 | 7h 42m |
| February | 17:30 | 07:53 | 9h 37m |
| March | 18:28 | 06:46 | 11h 42m |
| April | 20:28 | 06:27 | 14h 2m |
| May | 21:26 | 05:21 | 16h 5m |
| June | 22:08 | 04:47 | 17h 21m |
| July | 22:00 | 05:06 | 16h 54m |
| August | 21:05 | 05:59 | 15h 6m |
| September | 19:49 | 06:57 | 12h 52m |
| October | 18:32 | 07:54 | 10h 38m |
| November | 16:26 | 07:58 | 8h 29m |
| December | 15:58 | 08:46 | 7h 12m |