County Tyrone climate

Monthly averages for Omagh, 2021–2025 · Ulster

Tyrone is the largest county in Ulster, inland and hilly, with the Sperrins to the north. It is cool and fairly wet, with cold winter nights in the valleys and short, mild summers.

Rain: about 1200 mm falls in a year at Omagh, on roughly 200 days, making Tyrone the 13th wettest of the 32 counties. October is the wettest month (131 mm) and January the driest (82 mm).

Temperature: July is the warmest month, with afternoons averaging 18°C, and January the coldest, with nights averaging 2°C. Nights average below 2°C in 1 month of the year, so frost is possible in winter.

Sunshine: about 2255 hours a year, the 31st sunniest of the 32 counties. May is the sunniest month (9.4 hours a day) and December the dullest (2.6).

Compare Tyrone with its neighbours →

Rainfall

Average total rainfall each month, in millimetres. 1200 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 2255 hours a year.

Tyrone and its neighbours
County	Rain mm/yr	Rain days	July high	January low	Sun h/yr
Tyrone	1200	200	18°C	2°C	2255
Antrim	1047	175	19°C	2°C	2637
Armagh	1008	177	19°C	2°C	2433
Derry	1186	206	18°C	3°C	2255
Donegal	1211	200	18°C	3°C	2212
Fermanagh	1216	197	19°C	2°C	2301
Monaghan	1064	185	19°C	2°C	2375

Recent extremes, 2021–2025

Hottest day: 29.0°C on 18 July 2022
Coldest night: −6.2°C on 10 January 2025
Wettest day: 38.1 mm on 2 October 2025
Wettest month: July 2023, 201 mm
Driest month: March 2025, 35 mm

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

Omagh month by month
Month	High °C	Low °C	Rain mm	Rain days	Sun h/day	Wind km/h
January	7	2	82	13	3.5	14
February	8	3	99	17	4.0	18
March	10	3	89	16	5.6	15
April	12	4	88	16	8.1	14
May	15	7	92	15	9.4	12
June	17	10	86	16	9.2	13
July	18	11	104	19	7.9	12
August	18	11	107	19	8.7	13
September	16	10	110	17	6.9	13
October	13	8	131	20	4.5	15
November	10	5	97	15	3.6	15
December	8	3	115	17	2.6	16
Year	13	6	1200	200	2255 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: Antrim · Armagh · Derry · Donegal · Fermanagh · Monaghan. All counties: rainfall, temperature, sunshine.