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Monthly climate in Rathangan, Ireland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Rathangan features a oceanic climate (Cfb). Temperatures typically range between 6 °C (42 °F) and 16 °C (61 °F) through the year, but rarely can drop to -6 °C (21 °F) or can rise to as high as 29 °C (84 °F). The average annual precipitation amounts to about 896 mm (35.3 inches) and receives 163 rainy days on the 1 mm (0.04 inches) threshold annually. Rathangan enjoys an average of 2773 hours of sunshine throughout the year, and daylight varies from 7 hours 36 minutes to 16 hours 51 minutes per day.

Monthly average temperatures in Rathangan, Ireland

The warmest months in Rathangan are June, July and August, with daily mean temperatures ranging from 14 to 16 °C (58 - 61 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 6 °C (42 - 44 °F) throughout the day. On average each year, Rathangan experiences 2 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 Rathangan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		16°C
(62°F)		17°C
(64°F)		21°C
(71°F)		25°C
(76°F)		28°C
(83°F)		29°C
(84°F)		24°C
(75°F)		26°C
(80°F)		20°C
(68°F)		15°C
(60°F)		14°C
(57°F)
Mean maximum12°C
(54°F)		13°C
(56°F)		15°C
(60°F)		18°C
(65°F)		22°C
(71°F)		23°C
(73°F)		25°C
(77°F)		23°C
(73°F)		22°C
(72°F)		18°C
(64°F)		14°C
(58°F)		13°C
(56°F)
Average high8°C
(46°F)		9°C
(48°F)		10°C
(51°F)		12°C
(55°F)		15°C
(60°F)		18°C
(65°F)		20°C
(68°F)		19°C
(66°F)		17°C
(63°F)		13°C
(56°F)		10°C
(50°F)		8°C
(48°F)
Daily mean6°C
(42°F)		6°C
(43°F)		7°C
(45°F)		9°C
(48°F)		12°C
(53°F)		14°C
(58°F)		16°C
(61°F)		15°C
(60°F)		13°C
(57°F)		10°C
(51°F)		8°C
(46°F)		6°C
(44°F)
Average low3°C
(38°F)		4°C
(39°F)		4°C
(39°F)		5°C
(41°F)		8°C
(46°F)		11°C
(51°F)		13°C
(55°F)		12°C
(54°F)		10°C
(51°F)		8°C
(46°F)		5°C
(41°F)		4°C
(40°F)
Mean minimum-3°C
(27°F)		-2°C
(29°F)		-2°C
(29°F)		-2°C
(30°F)		1°C
(34°F)		6°C
(42°F)		8°C
(47°F)		8°C
(46°F)		4°C
(40°F)		1°C
(35°F)		-1°C
(31°F)		-1°C
(30°F)
Minimum-5°C
(23°F)		-3°C
(27°F)		-6°C
(21°F)		-4°C
(26°F)		-2°C
(29°F)		5°C
(40°F)		6°C
(43°F)		6°C
(42°F)		0°C
(33°F)		-2°C
(29°F)		-3°C
(28°F)		-5°C
(23°F)

Compare climate in Rathangan with other places

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

Monthly average precipitation in Rathangan, Ireland

Rathangan usually has the most precipitation in August, November and December, with an average of 15 rainy days and 90 mm (3.5 inches) of precipitation per month. The driest months in Rathangan are January, April and September. On average, 57 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rathangan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)54 (2.1)83 (3.3)82 (3.2)48 (1.9)70 (2.8)69 (2.7)72 (2.8)95 (3.8)67 (2.6)81 (3.2)84 (3.3)91 (3.6)
Average precipitation days (≥ 1 mm)101517101213131712151415

Monthly sunshine hours in Rathangan, Ireland

The sunniest months in Rathangan are May, June and July, when the sun shines an average of 11 hours 55 minutes a day. Least sunny months in Rathangan: January, November and December receive an average of 3 hours 4 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rathangan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours7913417327936936336530827422311389
Mean daily daylight hours8h 9m9h 50m11h 54m14h 1m15h 52m16h 51m16h 19m14h 39m12h 36m10h 31m8h 37m7h 36m

Solar UV radiation in Rathangan, Ireland

Rathangan 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 Rathangan UV Index data.

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