July 21, 2026 · Letterkenny, Ireland
Sunrise in Letterkenny today is at 05:22. Day length is 16h 32m. See below for sunset, solar noon, dawn and dusk — all times calculated astronomically for Letterkenny's coordinates and updated daily.
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.
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 Letterkenny.
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 | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 08:48 | 16:33 | 7h 44m |
| February | 07:57 | 17:35 | 9h 38m |
| March | 06:50 | 18:32 | 11h 42m |
| April | 06:31 | 20:32 | 14h 1m |
| May | 05:26 | 21:30 | 16h 3m |
| June | 04:53 | 22:11 | 17h 18m |
| July | 05:11 | 22:03 | 16h 52m |
| August | 06:04 | 21:09 | 15h 5m |
| September | 07:02 | 19:53 | 12h 51m |
| October | 07:58 | 18:37 | 10h 38m |
| November | 08:01 | 16:31 | 8h 30m |
| December | 08:49 | 16:04 | 7h 14m |