The Atlantic Ocean and the warming influence of the Gulf Stream affect weather patterns in Ireland. Temperatures differ regionally, with central and eastern areas tending to be more extreme. However, due to a temperate oceanic climate, temperatures are seldom lower than −5 °C (23 °F) in winter or higher than 26 °C (79 °F) in summer. The highest temperature recorded in Ireland was 33.3 °C (91.9 °F) on 26 June 1987 at Kilkenny Castle in Kilkenny, while the lowest temperature recorded was −19.1 °C (−2.4 °F) at Markree Castle in Sligo. Rainfall is more prevalent during winter months and less so during the early months of summer. Southwestern areas experience the most rainfall as a result of south westerly winds, while Sligo receives the least. Sunshine duration is highest in the southeast and northwest of the country. The far north and west are two of the windiest regions in Europe, with great potential for wind energy generation
