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Monthly climate in Monaghan, Ireland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Monaghan features a oceanic climate (Cfb). Temperatures typically range between 5 °C (42 °F) and 15 °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 1005 mm (39.6 inches) and receives 174 rainy days on the 1 mm (0.04 inches) threshold annually. Monaghan enjoys an average of 2646 hours of sunshine throughout the year, and daylight varies from 7 hours 24 minutes to 17 hours 5 minutes per day.

Monthly average temperatures in Monaghan, Ireland

The warmest months in Monaghan are June, July and August, with daily mean temperatures ranging from 14 to 15 °C (57 - 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, Monaghan experiences 1 days above 25 °C (77.0 °F) and 20 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Monaghan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(58°F)		15°C
(59°F)		17°C
(62°F)		20°C
(68°F)		24°C
(76°F)		29°C
(84°F)		28°C
(82°F)		24°C
(75°F)		24°C
(75°F)		19°C
(67°F)		15°C
(59°F)		13°C
(56°F)
Mean maximum12°C
(54°F)		12°C
(55°F)		14°C
(58°F)		17°C
(63°F)		21°C
(70°F)		22°C
(72°F)		24°C
(76°F)		22°C
(72°F)		20°C
(69°F)		17°C
(63°F)		14°C
(57°F)		12°C
(54°F)
Average high7°C
(45°F)		8°C
(47°F)		9°C
(49°F)		12°C
(53°F)		15°C
(59°F)		17°C
(64°F)		19°C
(66°F)		18°C
(64°F)		16°C
(61°F)		13°C
(55°F)		10°C
(50°F)		8°C
(46°F)
Daily mean5°C
(42°F)		6°C
(42°F)		6°C
(44°F)		8°C
(47°F)		11°C
(52°F)		14°C
(57°F)		15°C
(60°F)		15°C
(59°F)		13°C
(55°F)		10°C
(50°F)		7°C
(45°F)		6°C
(43°F)
Average low3°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)		7°C
(46°F)		5°C
(41°F)		4°C
(39°F)
Mean minimum-3°C
(28°F)		-2°C
(29°F)		-2°C
(29°F)		-1°C
(30°F)		1°C
(33°F)		5°C
(41°F)		8°C
(46°F)		7°C
(44°F)		4°C
(39°F)		2°C
(35°F)		-1°C
(31°F)		-1°C
(31°F)
Minimum-4°C
(24°F)		-5°C
(24°F)		-4°C
(25°F)		-3°C
(27°F)		-2°C
(29°F)		4°C
(39°F)		6°C
(43°F)		5°C
(41°F)		1°C
(33°F)		-1°C
(30°F)		-4°C
(25°F)		-3°C
(26°F)

Compare climate in Monaghan with other places

Compare temperature, precipitation, sunshine, UV index in Monaghan, Ireland with other places around the world.

Monthly average precipitation in Monaghan, Ireland

Monaghan usually has the most precipitation in February, August and December, with an average of 16 rainy days and 105 mm (4.2 inches) of precipitation per month. The driest months in Monaghan are January, April and May. On average, 62 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Monaghan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)64 (2.5)97 (3.8)87 (3.4)51 (2.0)70 (2.8)88 (3.5)82 (3.2)126 (5.0)74 (2.9)87 (3.4)86 (3.4)93 (3.7)
Average precipitation days (≥ 1 mm)111517121215132015151514

Monthly sunshine hours in Monaghan, Ireland

The sunniest months in Monaghan are May, June and July, when the sun shines an average of 11 hours 28 minutes a day. Least sunny months in Monaghan: January, November and December receive an average of 2 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Monaghan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours6913317127836334634429225920610375
Mean daily daylight hours7h 58m9h 45m11h 54m14h 6m16h 2m17h 5m16h 31m14h 46m12h 38m10h 27m8h 28m7h 24m

Solar UV radiation in Monaghan, Ireland

Monaghan 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 Monaghan UV Index data.

Average daily maximum UV levels by month for Monaghan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124578875321