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Monthly climate in Armagh, Northern Ireland, United Kingdom

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Armagh features a oceanic climate (Cfb). Temperatures typically range between 5 °C (42 °F) and 16 °C (60 °F) through the year, but rarely can drop to -5 °C (24 °F) or can rise to as high as 29 °C (84 °F). The average annual precipitation amounts to about 958 mm (37.7 inches) and receives 170 rainy days on the 1 mm (0.04 inches) threshold annually. Armagh enjoys an average of 2661 hours of sunshine throughout the year, and daylight varies from 7 hours 23 minutes to 17 hours 6 minutes per day.

Monthly average temperatures in Armagh, Northern Ireland, United Kingdom §

The warmest months in Armagh are June, July and August, with daily mean temperatures ranging from 14 to 16 °C (58 - 60 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 6 °C (42 - 43 °F) throughout the day. On average each year, Armagh experiences 2 days above 25 °C (77.0 °F) and 17 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Armagh, Northern Ireland, United Kingdom. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 14°C
(58°F)		 15°C
(59°F)		 17°C
(63°F)		 20°C
(68°F)		 24°C
(75°F)		 29°C
(84°F)		 28°C
(82°F)		 24°C
(75°F)		 23°C
(74°F)		 19°C
(67°F)		 15°C
(59°F)		 13°C
(56°F)
Mean maximum 12°C
(54°F)		 13°C
(55°F)		 14°C
(58°F)		 17°C
(63°F)		 21°C
(70°F)		 22°C
(72°F)		 25°C
(76°F)		 22°C
(72°F)		 21°C
(69°F)		 17°C
(63°F)		 14°C
(57°F)		 12°C
(55°F)
Average high 7°C
(46°F)		 8°C
(47°F)		 10°C
(50°F)		 12°C
(53°F)		 15°C
(59°F)		 18°C
(64°F)		 19°C
(67°F)		 18°C
(65°F)		 16°C
(61°F)		 13°C
(55°F)		 10°C
(50°F)		 8°C
(47°F)
Daily mean 5°C
(42°F)		 6°C
(43°F)		 6°C
(44°F)		 8°C
(47°F)		 11°C
(53°F)		 14°C
(58°F)		 16°C
(60°F)		 15°C
(59°F)		 13°C
(56°F)		 10°C
(51°F)		 7°C
(46°F)		 6°C
(43°F)
Average low 3°C
(38°F)		 3°C
(38°F)		 3°C
(38°F)		 5°C
(41°F)		 7°C
(45°F)		 10°C
(51°F)		 12°C
(54°F)		 12°C
(54°F)		 10°C
(50°F)		 8°C
(46°F)		 5°C
(41°F)		 4°C
(39°F)
Mean minimum -3°C
(28°F)		 -2°C
(29°F)		 -2°C
(30°F)		 -1°C
(30°F)		 1°C
(34°F)		 5°C
(42°F)		 8°C
(47°F)		 7°C
(45°F)		 5°C
(40°F)		 2°C
(36°F)		 -0°C
(31°F)		 -1°C
(31°F)
Minimum -5°C
(24°F)		 -4°C
(24°F)		 -4°C
(25°F)		 -3°C
(27°F)		 -1°C
(30°F)		 5°C
(41°F)		 6°C
(43°F)		 6°C
(42°F)		 2°C
(35°F)		 -1°C
(31°F)		 -3°C
(26°F)		 -3°C
(27°F)

Compare climate in Armagh with other places

Compare temperature, precipitation, sunshine, UV index in Armagh, Northern Ireland, United Kingdom with other places around the world.

Monthly average precipitation in Armagh, Northern Ireland, United Kingdom §

Armagh usually has the most precipitation in February, August and December, with an average of 15 rainy days and 100 mm (3.9 inches) of precipitation per month. The driest months in Armagh are January, April and May. On average, 59 mm (2.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Armagh, Northern Ireland, United Kingdom. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 60 (2.4) 91 (3.6) 83 (3.3) 49 (1.9) 68 (2.7) 81 (3.2) 78 (3.1) 121 (4.8) 72 (2.8) 82 (3.2) 82 (3.2) 89 (3.5)
Average precipitation days (≥ 1 mm) 11 15 16 12 12 15 13 19 14 15 15 13

Monthly sunshine hours in Armagh, Northern Ireland, United Kingdom §

The sunniest months in Armagh are May, June and July, when the sun shines an average of 11 hours 33 minutes a day. Least sunny months in Armagh: January, November and December receive an average of 2 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Armagh, Northern Ireland, United Kingdom. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 70 133 172 279 365 348 349 298 261 205 100 74
Mean daily daylight hours 7h 58m 9h 44m 11h 54m 14h 6m 16h 3m 17h 6m 16h 32m 14h 46m 12h 38m 10h 27m 8h 27m 7h 23m

Solar UV radiation in Armagh, Northern Ireland, United Kingdom §

Armagh experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure. January, February and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Armagh UV Index data.

Average daily maximum UV levels by month for Armagh, Northern Ireland, United Kingdom. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 2 4 5 7 8 8 7 5 3 2 1

Detailed Monthly Weather Insights for Armagh, Northern Ireland, United Kingdom

Discover in-depth weather details for every month in Armagh. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Armagh's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.