Achoimrí Aimsire

The Weather of April 2012

Colder than average everywhere; wet in most places
Rainfall was above average nearly everywhere, with the exception of Malin Head, which reported around 80% of its long-term average and its driest April since 2007 (5 years). In contrast, most stations in the east recorded percentage of normals over 170% and reported their wettest April since 1998 (14 years). This month, stations in the Dublin area attributed nearly a quarter of their April rainfall totals to heavy showers on the 25th. Dublin Airport and Casement Aerodrome reported falls of 21.3 mm and 22.5 mm respectively, their highest daily rainfalls recorded at the sites during April since 2002 (10 years). Mean temperatures for April were all below average, with departures from normal up to 1°C in parts of the southwest and midlands. Most mean air temperatures this month were reported to be the lowest in at least 11 to 23 years, countrywide. Maximum air temperatures recorded were also the lowest in a number of years, with stations reporting their lowest maximums in eight to 26 years and Casement Aerodrome’s maximum temperature of 13.1°C, reported as its lowest maximum since the station opened in 1964 (48 years). Minimum air temperatures were below average, with many minimums measured in the west and southwest reported as the lowest since 2006 (6 years). Grass minimum temperatures at Cork and Shannon Airport were the lowest in six and 12 years respectively, with both sites reporting the number of days with ground frost to be nearly 50% above their April normal. Sunshine totals were above normal everywhere with the highest percentage of normal received in the west and southwest. Belmullet reported it was its sunniest April since 1974 (38 years), while stations in the Dublin area reported percentages above normal but still reported it was the dullest.

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