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Monthly climate in Millstreet, Ireland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Millstreet 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 -7 °C (19 °F) or can rise to as high as 28 °C (83 °F). The average annual precipitation amounts to about 1088 mm (42.8 inches) and receives 171 rainy days on the 1 mm (0.04 inches) threshold annually. Millstreet enjoys an average of 2838 hours of sunshine throughout the year, and daylight varies from 7 hours 48 minutes to 16 hours 38 minutes per day.

Monthly average temperatures in Millstreet, Ireland

The warmest months in Millstreet are June, July and August, with daily mean temperatures ranging from 13 to 15 °C (56 - 60 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 5 to 6 °C (42 - 43 °F) throughout the day. On average each year, Millstreet experiences 2 days above 25 °C (77.0 °F) and 28 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Millstreet. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(55°F)		13°C
(56°F)		17°C
(62°F)		19°C
(67°F)		24°C
(75°F)		28°C
(83°F)		27°C
(80°F)		23°C
(74°F)		25°C
(77°F)		17°C
(63°F)		15°C
(59°F)		13°C
(57°F)
Mean maximum12°C
(54°F)		12°C
(54°F)		15°C
(59°F)		17°C
(62°F)		20°C
(69°F)		23°C
(73°F)		24°C
(75°F)		22°C
(71°F)		21°C
(70°F)		16°C
(61°F)		14°C
(57°F)		12°C
(55°F)
Average high8°C
(47°F)		9°C
(48°F)		10°C
(50°F)		12°C
(54°F)		15°C
(58°F)		17°C
(63°F)		19°C
(67°F)		18°C
(64°F)		16°C
(61°F)		13°C
(55°F)		10°C
(50°F)		9°C
(48°F)
Daily mean5°C
(42°F)		6°C
(43°F)		6°C
(43°F)		8°C
(47°F)		11°C
(52°F)		13°C
(56°F)		15°C
(60°F)		15°C
(58°F)		13°C
(55°F)		10°C
(50°F)		7°C
(45°F)		6°C
(44°F)
Average low3°C
(37°F)		3°C
(38°F)		3°C
(37°F)		4°C
(40°F)		7°C
(44°F)		9°C
(49°F)		11°C
(53°F)		11°C
(53°F)		9°C
(49°F)		7°C
(45°F)		5°C
(41°F)		4°C
(40°F)
Mean minimum-3°C
(26°F)		-2°C
(29°F)		-3°C
(28°F)		-2°C
(29°F)		1°C
(34°F)		5°C
(41°F)		7°C
(45°F)		6°C
(44°F)		3°C
(37°F)		1°C
(34°F)		-2°C
(29°F)		-2°C
(29°F)
Minimum-6°C
(22°F)		-4°C
(26°F)		-7°C
(19°F)		-3°C
(27°F)		-2°C
(29°F)		3°C
(38°F)		5°C
(41°F)		5°C
(41°F)		0°C
(33°F)		-2°C
(29°F)		-2°C
(29°F)		-3°C
(27°F)

Compare climate in Millstreet with other places

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

Monthly average precipitation in Millstreet, Ireland

Millstreet usually has the most precipitation in February, October and December, with an average of 16 rainy days and 114 mm (4.5 inches) of precipitation per month. The driest months in Millstreet are January, June and July. On average, 70 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Millstreet. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)69 (2.7)121 (4.7)100 (3.9)82 (3.2)85 (3.3)71 (2.8)69 (2.7)105 (4.1)79 (3.1)107 (4.2)87 (3.4)114 (4.5)
Average precipitation days (≥ 1 mm)121717121312121613151517

Monthly sunshine hours in Millstreet, Ireland

The sunniest months in Millstreet are May, June and July, when the sun shines an average of 11 hours 57 minutes a day. Least sunny months in Millstreet: January, November and December receive an average of 3 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Millstreet. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours8013318329437935836233227521812693
Mean daily daylight hours8h 19m9h 56m11h 54m13h 56m15h 42m16h 38m16h 8m14h 33m12h 35m10h 34m8h 46m7h 48m

Solar UV radiation in Millstreet, Ireland

Millstreet 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 Millstreet UV Index data.

Average daily maximum UV levels by month for Millstreet. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124678875421