July 21, 2026 · Letterkenny, Ireland
Letterkenny has 16h 32m of daylight today. Sunrise is at 05:22 and sunset is at 21:54. All times are calculated astronomically for Letterkenny's exact coordinates.
Letterkenny 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.
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 Letterkenny, or see daylight hours for every day of the year.
The longest day in Letterkenny is around 17h 22m (around June 21). The shortest is around 7h 11m (around December 21). Days are currently getting shorter — losing about 3 minutes per day.
| Month | Day length | Sunrise | Sunset |
|---|---|---|---|
| January | 7h 44m | 08:48 | 16:33 |
| February | 9h 38m | 07:57 | 17:35 |
| March | 11h 42m | 06:50 | 18:32 |
| April | 14h 1m | 06:31 | 20:32 |
| May | 16h 3m | 05:26 | 21:30 |
| June | 17h 18m | 04:53 | 22:11 |
| July | 16h 52m | 05:11 | 22:03 |
| August | 15h 5m | 06:04 | 21:09 |
| September | 12h 51m | 07:02 | 19:53 |
| October | 10h 38m | 07:58 | 18:37 |
| November | 8h 30m | 08:01 | 16:31 |
| December | 7h 14m | 08:49 | 16:04 |