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06 Sept 2025

Met Éireann data indicates wettest July on record in Ireland

Met Éireann data indicates wettest July on record in Ireland

Met Éireann data suggests last month was the wettest July on record in Ireland. Following on from the warmest June on record for Ireland, July 2023 is set to be the wettest July on record according to the provisional data.

Provisional data from Met Éireannd data sets that go back to 1940 show a number of stats that illustrate just how much rain fell in the course of the month.

Ireland had 217 % of its 1981-2010 Long term Average (LTA) rainfall in July 2023.

July 2023 also had more than 4 times the amount of rain observed in July 2022 and more than twice that observed in July 2021.

The previous wettest July was in 2009 with 202 % of the LTA.

Over the past 12 months, Ireland had its wettest October on record in 2022, its wettest March on record earlier this year and now its wettest July on record.

Knock Airport, Co Mayo observed 37 consecutive Rain Days (0.2 mm or more) ending on Sunday 23 July 2023. There was also up to 15 consecutive Wet Days (1.0 mm or more) at Dunsany, Co Meath, Malin Head, Co Donegal (ended Sunday 23 July) and Claremorris, Co Mayo (ended Friday 7 July).

Provisionally, the highest daily rainfall total of July 2023 from 25 of Met Éireann's primary weather stations was 41.6 mm at Dunsany, Co Meath on Saturday 22nd, followed closely by 41.2 mm at Oak Park, Co Carlow on Monday 10th.

Provisionally from their automatic weather stations, Raphoe, Co Donegal had 76.4 mm of rainfall, also on Saturday 22nd, which led to flash flooding in the area. The highest daily total from the previous wettest July in 2009 was 68.5 mm at Caherkirby, Co Cork.

According to Met Éireann’s latest monthly forecast, the current meteorological setup looks set to continue into the early days of August. The North Atlantic jet stream is forecast to remain south of the country, meaning it’s likely low pressure systems with associated active weather fronts will continue to dominate our weather. Met Éireann's monthly forecasts are updated twice weekly, and can be viewed on www.met.ie.

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