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Monthly climate in Clifden, Ireland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Clifden features a oceanic climate (Cfb). Temperatures typically range between 7 °C (45 °F) and 15 °C (59 °F) through the year, but rarely can drop to -4 °C (25 °F) or can rise to as high as 27 °C (80 °F). The average annual precipitation amounts to about 1454 mm (57.2 inches) and receives 225 rainy days on the 1 mm (0.04 inches) threshold annually. Clifden enjoys an average of 2956 hours of sunshine throughout the year, and daylight varies from 7 hours 33 minutes to 16 hours 55 minutes per day.

Monthly average temperatures in Clifden, Ireland

The warmest months in Clifden are July, August and September, with daily mean temperatures ranging from 13 to 15 °C (56 - 59 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 7 to 7 °C (45 - 45 °F) throughout the day. On average each year, Clifden experiences 1 days above 25 °C (77.0 °F) and 3 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Clifden. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(56°F)		14°C
(57°F)		16°C
(60°F)		18°C
(65°F)		22°C
(72°F)		26°C
(79°F)		27°C
(80°F)		22°C
(72°F)		24°C
(75°F)		18°C
(65°F)		14°C
(58°F)		13°C
(55°F)
Mean maximum12°C
(54°F)		12°C
(54°F)		13°C
(55°F)		16°C
(61°F)		20°C
(68°F)		20°C
(69°F)		22°C
(72°F)		20°C
(69°F)		19°C
(67°F)		16°C
(61°F)		14°C
(57°F)		12°C
(54°F)
Average high9°C
(48°F)		9°C
(48°F)		9°C
(49°F)		11°C
(53°F)		13°C
(56°F)		15°C
(60°F)		17°C
(62°F)		17°C
(62°F)		15°C
(60°F)		13°C
(55°F)		10°C
(51°F)		9°C
(49°F)
Daily mean7°C
(45°F)		7°C
(45°F)		7°C
(45°F)		9°C
(48°F)		11°C
(52°F)		13°C
(56°F)		15°C
(59°F)		15°C
(59°F)		13°C
(56°F)		11°C
(52°F)		9°C
(48°F)		8°C
(46°F)
Average low5°C
(42°F)		5°C
(41°F)		5°C
(41°F)		6°C
(44°F)		8°C
(47°F)		11°C
(51°F)		12°C
(54°F)		13°C
(55°F)		11°C
(53°F)		9°C
(49°F)		7°C
(45°F)		6°C
(43°F)
Mean minimum1°C
(34°F)		-0°C
(32°F)		0°C
(33°F)		2°C
(35°F)		4°C
(39°F)		7°C
(45°F)		9°C
(48°F)		10°C
(50°F)		7°C
(44°F)		5°C
(41°F)		2°C
(36°F)		2°C
(36°F)
Minimum-1°C
(31°F)		-2°C
(28°F)		-4°C
(25°F)		0°C
(32°F)		1°C
(34°F)		6°C
(42°F)		8°C
(47°F)		8°C
(46°F)		4°C
(40°F)		2°C
(36°F)		1°C
(33°F)		0°C
(32°F)

Compare climate in Clifden with other places

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

Monthly average precipitation in Clifden, Ireland

Clifden usually has the most precipitation in February, October and December, with an average of 21 rainy days and 160 mm (6.3 inches) of precipitation per month. The driest months in Clifden are April, May and June. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Clifden. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)107 (4.2)152 (6.0)117 (4.6)65 (2.5)77 (3.0)91 (3.6)105 (4.1)151 (6.0)112 (4.4)163 (6.4)151 (6.0)164 (6.4)
Average precipitation days (≥ 1 mm)172120121417182220222022

Monthly sunshine hours in Clifden, Ireland

The sunniest months in Clifden are May, June and July, when the sun shines an average of 12 hours 43 minutes a day. Least sunny months in Clifden: January, November and December receive an average of 3 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Clifden. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours7113518831940238338534828822511491
Mean daily daylight hours8h 6m9h 49m11h 54m14h 2m15h 55m16h 55m16h 23m14h 41m12h 37m10h 30m8h 35m7h 33m

Solar UV radiation in Clifden, Ireland

Clifden 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 Clifden UV Index data.

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