County Kilkenny climate

Monthly averages for Kilkenny, 2021–2025 · Leinster

Kilkenny is inland and sheltered on most sides by hills, giving it warm summers and the Republic's highest recorded temperature, at Kilkenny Castle in 1887. Rainfall is moderate for Ireland.

Rain: about 1046 mm falls in a year at Kilkenny, on roughly 164 days, making Kilkenny the 25th wettest of the 32 counties. October is the wettest month (138 mm) and June the driest (62 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 2460 hours a year, the 12th sunniest of the 32 counties. June is the sunniest month (10.0 hours a day) and December the dullest (3.4).

Compare Kilkenny with its neighbours →

Rainfall

Average total rainfall each month, in millimetres. 1046 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 2460 hours a year.

Kilkenny and its neighbours
County	Rain mm/yr	Rain days	July high	January low	Sun h/yr
Kilkenny	1046	164	19°C	2°C	2460
Carlow	985	162	20°C	2°C	2457
Laois	976	165	20°C	2°C	2479
Tipperary	1019	173	19°C	2°C	2457
Waterford	1255	165	20°C	3°C	2586
Wexford	1201	166	20°C	3°C	2756
Kildare	971	172	20°C	2°C	2476

Recent extremes, 2021–2025

Hottest day: 28.8°C on 13 August 2022
Coldest night: −6.8°C on 9 January 2025
Wettest day: 46.7 mm on 27 October 2021
Wettest month: October 2022, 195 mm
Driest month: February 2023, 16 mm

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

Kilkenny month by month
Month	High °C	Low °C	Rain mm	Rain days	Sun h/day	Wind km/h
January	7	2	82	12	3.9	14
February	9	4	89	14	4.3	17
March	11	4	87	14	6.2	15
April	12	5	66	13	8.3	14
May	16	8	83	14	9.9	13
June	18	10	62	13	10.0	13
July	19	12	86	14	9.1	13
August	19	12	62	12	9.3	13
September	17	10	108	13	7.0	13
October	14	8	138	18	5.2	15
November	10	5	87	15	4.1	15
December	9	4	96	14	3.4	17
Year	14	7	1046	164	2460 h	14

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: Carlow · Laois · Tipperary · Waterford · Wexford · Kildare. All counties: rainfall, temperature, sunshine.