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Monthly climate in Belmullet, Ireland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Belmullet 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 -1 °C (30 °F) or can rise to as high as 23 °C (74 °F). The average annual precipitation amounts to about 1386 mm (54.6 inches) and receives 225 rainy days on the 1 mm (0.04 inches) threshold annually. Belmullet enjoys an average of 2884 hours of sunshine throughout the year, and daylight varies from 7 hours 24 minutes to 17 hours 4 minutes per day.

Monthly average temperatures in Belmullet, Ireland

The warmest months in Belmullet are July, August and September, with daily mean temperatures ranging from 14 to 15 °C (57 - 59 °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, Belmullet 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 Belmullet. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(56°F)		14°C
(58°F)		15°C
(59°F)		18°C
(64°F)		20°C
(69°F)		22°C
(71°F)		23°C
(74°F)		20°C
(68°F)		20°C
(69°F)		18°C
(65°F)		14°C
(58°F)		13°C
(55°F)
Mean maximum12°C
(54°F)		12°C
(54°F)		12°C
(54°F)		15°C
(58°F)		18°C
(64°F)		18°C
(64°F)		21°C
(70°F)		19°C
(66°F)		18°C
(65°F)		16°C
(61°F)		14°C
(57°F)		12°C
(55°F)
Average high9°C
(48°F)		9°C
(48°F)		9°C
(49°F)		11°C
(52°F)		13°C
(55°F)		14°C
(58°F)		16°C
(61°F)		16°C
(61°F)		15°C
(59°F)		13°C
(55°F)		11°C
(51°F)		9°C
(49°F)
Daily mean8°C
(46°F)		7°C
(45°F)		8°C
(46°F)		9°C
(49°F)		11°C
(52°F)		13°C
(55°F)		14°C
(58°F)		15°C
(59°F)		14°C
(57°F)		12°C
(53°F)		9°C
(49°F)		8°C
(47°F)
Average low6°C
(44°F)		6°C
(43°F)		6°C
(43°F)		7°C
(46°F)		9°C
(49°F)		11°C
(53°F)		13°C
(56°F)		13°C
(56°F)		12°C
(54°F)		10°C
(51°F)		8°C
(47°F)		7°C
(45°F)
Mean minimum2°C
(36°F)		2°C
(36°F)		2°C
(36°F)		4°C
(39°F)		6°C
(44°F)		9°C
(48°F)		11°C
(52°F)		11°C
(53°F)		9°C
(49°F)		7°C
(45°F)		5°C
(41°F)		3°C
(37°F)
Minimum1°C
(35°F)		1°C
(33°F)		-1°C
(30°F)		3°C
(37°F)		4°C
(40°F)		8°C
(47°F)		10°C
(51°F)		10°C
(51°F)		8°C
(47°F)		6°C
(42°F)		3°C
(38°F)		2°C
(35°F)

Compare climate in Belmullet with other places

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

Monthly average precipitation in Belmullet, Ireland

Belmullet usually has the most precipitation in October, November and December, with an average of 22 rainy days and 152 mm (6.0 inches) of precipitation per month. The driest months in Belmullet are April, May and June. On average, 74 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Belmullet. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)107 (4.2)139 (5.5)115 (4.5)64 (2.5)71 (2.8)88 (3.5)92 (3.6)146 (5.7)109 (4.3)160 (6.3)148 (5.8)147 (5.8)
Average precipitation days (≥ 1 mm)172119131317162220222223

Monthly sunshine hours in Belmullet, Ireland

The sunniest months in Belmullet are May, June and July, when the sun shines an average of 12 hours 22 minutes a day. Least sunny months in Belmullet: January, November and December receive an average of 2 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Belmullet. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours7013518830440036736934327922511188
Mean daily daylight hours7h 59m9h 45m11h 54m14h 6m16h 2m17h 4m16h 31m14h 45m12h 38m10h 27m8h 28m7h 24m

Solar UV radiation in Belmullet, Ireland

Belmullet 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 Belmullet UV Index data.

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