Of course the reverse is true in the summer with close to seventeen hours of daylight. On Midsummer’s night on June 21st, you can still be leaping the St. John’s Day bonfire in twilight at 11pm. But you’ll need to be up by 4am to milk the cows at dawn.
This is not surprising, given it’s latitude, (roughly 53˚North) which it shares with southern Alaska, Canada’s Hudson bay, and Russia’s Kamchatka Peninsula. The Gulf Stream’s North Atlantic Drift, however, sweeps warm water up from the Gulf of Mexico, giving Ireland a much more temperate climate, thankfully.