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Monthly climate in Portraine, Ireland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Portraine features a oceanic climate (Cfb). Temperatures typically range between 7 °C (45 °F) and 16 °C (61 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 22 °C (71 °F). The average annual precipitation amounts to about 1014 mm (39.9 inches) and receives 170 rainy days on the 1 mm (0.04 inches) threshold annually. Portraine enjoys an average of 3091 hours of sunshine throughout the year, and daylight varies from 7 hours 32 minutes to 16 hours 55 minutes per day.

Monthly average temperatures in Portraine, Ireland

The warmest months in Portraine are July, August and September, 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 March, when daily mean temperatures range from 7 to 8 °C (45 - 46 °F) throughout the day. On average each year, Portraine experiences 0 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Portraine. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		13°C
(56°F)		14°C
(57°F)		15°C
(59°F)		18°C
(64°F)		20°C
(68°F)		22°C
(71°F)		20°C
(69°F)		20°C
(68°F)		18°C
(65°F)		15°C
(59°F)		13°C
(57°F)
Mean maximum12°C
(54°F)		12°C
(54°F)		12°C
(55°F)		13°C
(56°F)		16°C
(62°F)		18°C
(64°F)		20°C
(69°F)		19°C
(67°F)		19°C
(66°F)		17°C
(62°F)		14°C
(58°F)		13°C
(56°F)
Average high8°C
(48°F)		9°C
(48°F)		9°C
(49°F)		10°C
(51°F)		13°C
(55°F)		15°C
(60°F)		17°C
(63°F)		17°C
(63°F)		16°C
(61°F)		14°C
(57°F)		11°C
(52°F)		9°C
(49°F)
Daily mean7°C
(45°F)		7°C
(45°F)		8°C
(46°F)		9°C
(48°F)		11°C
(52°F)		14°C
(57°F)		16°C
(61°F)		16°C
(60°F)		14°C
(58°F)		12°C
(54°F)		10°C
(49°F)		8°C
(46°F)
Average low6°C
(42°F)		6°C
(42°F)		6°C
(43°F)		7°C
(45°F)		9°C
(49°F)		12°C
(54°F)		14°C
(58°F)		14°C
(58°F)		13°C
(55°F)		10°C
(51°F)		8°C
(47°F)		7°C
(44°F)
Mean minimum2°C
(37°F)		2°C
(36°F)		2°C
(36°F)		4°C
(39°F)		6°C
(43°F)		9°C
(49°F)		11°C
(53°F)		12°C
(53°F)		9°C
(48°F)		7°C
(45°F)		4°C
(40°F)		4°C
(39°F)
Minimum1°C
(34°F)		1°C
(34°F)		-2°C
(29°F)		2°C
(36°F)		3°C
(38°F)		8°C
(47°F)		10°C
(51°F)		11°C
(51°F)		7°C
(45°F)		5°C
(42°F)		3°C
(38°F)		2°C
(36°F)

Compare climate in Portraine with other places

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

Monthly average precipitation in Portraine, Ireland

Portraine usually has the most precipitation in October, November and December, with an average of 16 rainy days and 110 mm (4.3 inches) of precipitation per month. The driest months in Portraine are January, April and May. On average, 56 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Portraine. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)68 (2.7)85 (3.3)88 (3.5)43 (1.7)58 (2.3)76 (3.0)79 (3.1)100 (3.9)86 (3.4)103 (4.0)123 (4.8)106 (4.2)
Average precipitation days (≥ 1 mm)111714101113131615171815

Monthly sunshine hours in Portraine, Ireland

The sunniest months in Portraine are May, June and July, when the sun shines an average of 13 hours 5 minutes a day. Least sunny months in Portraine: January, November and December receive an average of 3 hours 18 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Portraine. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours8515320732840539939935430423512198
Mean daily daylight hours8h 6m9h 48m11h 54m14h 2m15h 55m16h 55m16h 23m14h 41m12h 37m10h 30m8h 34m7h 32m

Solar UV radiation in Portraine, Ireland

Portraine 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 Portraine UV Index data.

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