IRELAND SEES IT DRIEST JUNE SINCE 1941 & AND WARMEST JUNE TEMPERATURE SINCE 1946
All met.ie weather stations recorded above average sunshine levels June 2018 with heatwave conditions experienced in many places and the highest temperature since 1946 recorded at Shannon Airport at 32°C which was recorded on June 28th at Shannon.
- Highest total of rainfall was 82.2 mm (110% of Long-Term Average) at Mount Dillon, Co Roscommon.
- Lowest total: 3.8 mm (5% of Long-Term Average) at Dublin (Phoenix Park) (its driest June since 1941).
- Highest daily rainfall: 33.2 mm at Newport, Co Mayo on the 19th.
- Highest mean monthly temperature: 17.0°C at Shannon Airport, Co Clare (2.5°C above Long-Term Average) (its warmest June since 1946) .
- Lowest mean monthly temperature: 13.5°C at Malin Head, Co Donegal (0.9 °C above Long-Term Average).
- Highest air temperature: 32.0°C at Shannon Airport, Co Clare on the 28th (its highest daily max temp, of any month, since 1946).
- Lowest air temperature: 2.1°C at Mount Dillon, Co Roscommon on the 22nd .
- Lowest grass minimum: -1.2°C at Dunsany, Co Meath on the 22nd.
- Highest monthly total: 279.9 hrs (daily mean 9.3 hrs/day) at Johnstown Castle*, Co Wexford.
- Lowest monthly total: 199.3 hrs (daily mean 6.6 hrs/day) at Malin Head*, Co Donegal.
- Highest daily sunshine: 16.5 hrs at Malin Head*, Co Donegal on the 28th.
There were intense thunderstorms especially on the 1st and 8th, but in general the dry, settled weather from the end of May continued for the first two weeks of June with high pressure in charge and a slack easterly flow. The north Atlantic jet stream stayed well to the north. There was a break in the fine weather for the third week of the month. Storm Hector passed close to the Northwest, giving two days of rain and gales on the 13th and 14th followed by frontal systems crossing the country from the west up to the 20th. Even during this unsettled spell, rainfall totals were very low especially in the South and East. From the 21st, the remainder of the month was settled and exceptionally dry due to an area of high pressure building over Ireland. Heat wave and partial drought conditions were reported in several locations.
WIND STORM HECTOR
There was 1 day with storm force winds at Mace Head, Co Galway. Both the month's highest gust and 10-minute mean wind speed were reported at Mace Head, Co Galway on the 14th. The highest gust was 61 knots (113 km/h), its highest June gust since 2005. The month's highest 10-minute mean wind speed was 48 knots (89 km/h), its highest June 10-minute wind speed since 2005.
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