County Westmeath climate

Monthly averages for Mullingar, 2021–2025 · Leinster

Westmeath is inland and low-lying, dotted with lakes such as Lough Ennell and Lough Owel. Sheltered from the Atlantic, it is drier than the west but has colder winter nights and more fog than the coasts.

Rain: about 1079 mm falls in a year at Mullingar, on roughly 182 days, making Westmeath the 19th wettest of the 32 counties. October is the wettest month (122 mm) and June the driest (78 mm).

Temperature: July is the warmest month, with afternoons averaging 19°C, and January the coldest, with nights averaging 2°C. Frost is rare.

Sunshine: about 2442 hours a year, the 16th sunniest of the 32 counties. June is the sunniest month (10.2 hours a day) and December the dullest (2.9).

Compare Westmeath with its neighbours →

Rainfall

Average total rainfall each month, in millimetres. 1079 mm a year.

Temperature

Bars run from the average night-time low to the average daytime high, in °C.

Sunshine

Hours of sunshine on an average day in each month. About 2442 hours a year.

Westmeath and its neighbours
County	Rain mm/yr	Rain days	July high	January low	Sun h/yr
Westmeath	1079	182	19°C	2°C	2442
Cavan	1106	188	19°C	2°C	2393
Longford	1194	188	19°C	2°C	2408
Meath	978	169	20°C	2°C	2506
Offaly	1064	178	19°C	2°C	2409
Roscommon	1176	184	19°C	3°C	2326

Recent extremes, 2021–2025

Hottest day: 30.0°C on 18 July 2022
Coldest night: −4.4°C on 9 January 2021
Wettest day: 36.9 mm on 23 November 2024
Wettest month: October 2022, 177 mm
Driest month: March 2025, 25 mm

Ireland's all-time records are on the records page.

Mullingar month by month
Month	High °C	Low °C	Rain mm	Rain days	Sun h/day	Wind km/h
January	7	2	80	12	4.0	16
February	9	4	90	15	4.1	19
March	10	4	84	15	6.1	16
April	12	5	80	15	8.4	15
May	16	8	81	16	10.1	13
June	18	11	78	15	10.2	14
July	19	12	98	18	8.7	13
August	19	12	93	16	9.1	15
September	17	10	99	14	7.1	14
October	14	9	122	17	5.2	16
November	10	6	86	15	4.2	16
December	8	4	88	15	2.9	18
Year	13	7	1079	182	2442 h	16

Figures are averages for 2021–2025 at each county town, from the ERA5 weather reanalysis via Open-Meteo. They describe typical lowland weather in each county; hills and exposed coasts are wetter and windier.

Bordering counties: Cavan · Longford · Meath · Offaly · Roscommon. All counties: rainfall, temperature, sunshine.