July 21, 2026 · Cardiff, Wales
Sunset in Cardiff today is at 21:18. Day length is 15h 57m. See below for sunrise, solar noon, dawn and dusk — all times calculated astronomically for Cardiff's coordinates and updated daily.
Cardiff lies at 51°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 Cardiff.
The longest day in Cardiff is around 16h 38m (around June 21). The shortest is around 7h 50m (around December 21). Days are currently getting shorter — losing about 3 minutes per day.
| Month | Sunset | Sunrise | Day length |
|---|---|---|---|
| January | 16:31 | 08:13 | 8h 18m |
| February | 17:26 | 07:30 | 9h 56m |
| March | 18:15 | 06:31 | 11h 45m |
| April | 20:07 | 06:20 | 13h 47m |
| May | 20:56 | 05:24 | 15h 33m |
| June | 21:31 | 04:56 | 16h 35m |
| July | 21:26 | 05:12 | 16h 13m |
| August | 20:40 | 05:57 | 14h 42m |
| September | 19:32 | 06:46 | 12h 46m |
| October | 18:24 | 07:35 | 10h 49m |
| November | 16:27 | 07:29 | 8h 57m |
| December | 16:05 | 08:12 | 7h 53m |