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Monthly climate in Douglas, Ireland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Douglas features a oceanic climate (Cfb). Temperatures typically range between 7 °C (46 °F) and 16 °C (61 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 23 °C (73 °F). The average annual precipitation amounts to about 1042 mm (41.0 inches) and receives 165 rainy days on the 1 mm (0.04 inches) threshold annually. Douglas enjoys an average of 3117 hours of sunshine throughout the year, and daylight varies from 7 hours 51 minutes to 16 hours 34 minutes per day.

Monthly average temperatures in Douglas, Ireland

The warmest months in Douglas 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 (46 - 46 °F) throughout the day. On average each year, Douglas 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 Douglas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(56°F)		13°C
(55°F)		13°C
(56°F)		14°C
(58°F)		19°C
(67°F)		22°C
(71°F)		23°C
(73°F)		22°C
(71°F)		21°C
(70°F)		18°C
(64°F)		15°C
(59°F)		14°C
(57°F)
Mean maximum12°C
(54°F)		12°C
(54°F)		12°C
(55°F)		13°C
(56°F)		17°C
(62°F)		19°C
(66°F)		21°C
(70°F)		20°C
(68°F)		19°C
(66°F)		16°C
(62°F)		14°C
(57°F)		13°C
(55°F)
Average high9°C
(49°F)		9°C
(49°F)		10°C
(49°F)		11°C
(52°F)		13°C
(56°F)		16°C
(61°F)		18°C
(65°F)		17°C
(64°F)		16°C
(61°F)		14°C
(57°F)		11°C
(52°F)		10°C
(50°F)
Daily mean7°C
(46°F)		8°C
(46°F)		8°C
(46°F)		9°C
(49°F)		11°C
(53°F)		14°C
(58°F)		16°C
(61°F)		16°C
(60°F)		14°C
(58°F)		12°C
(54°F)		9°C
(49°F)		8°C
(47°F)
Average low6°C
(43°F)		6°C
(43°F)		6°C
(43°F)		7°C
(46°F)		9°C
(49°F)		12°C
(54°F)		14°C
(58°F)		14°C
(57°F)		13°C
(55°F)		10°C
(51°F)		8°C
(46°F)		7°C
(45°F)
Mean minimum2°C
(37°F)		2°C
(36°F)		2°C
(36°F)		3°C
(37°F)		6°C
(43°F)		9°C
(48°F)		11°C
(52°F)		11°C
(52°F)		9°C
(48°F)		7°C
(44°F)		4°C
(39°F)		3°C
(38°F)
Minimum0°C
(32°F)		0°C
(33°F)		-3°C
(27°F)		1°C
(34°F)		4°C
(39°F)		8°C
(46°F)		10°C
(51°F)		10°C
(50°F)		7°C
(45°F)		4°C
(39°F)		3°C
(37°F)		0°C
(33°F)

Compare climate in Douglas with other places

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

Monthly average precipitation in Douglas, Ireland

Douglas usually has the most precipitation in February, October and December, with an average of 16 rainy days and 117 mm (4.6 inches) of precipitation per month. The driest months in Douglas are January, June and July. On average, 63 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Douglas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)67 (2.6)118 (4.6)91 (3.6)73 (2.9)75 (3.0)61 (2.4)61 (2.4)88 (3.5)74 (2.9)112 (4.4)101 (4.0)122 (4.8)
Average precipitation days (≥ 1 mm)111717111211121413151517

Monthly sunshine hours in Douglas, Ireland

The sunniest months in Douglas are May, June and July, when the sun shines an average of 13 hours 2 minutes a day. Least sunny months in Douglas: January, November and December receive an average of 3 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Douglas. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours91143204324400393406363305239140103
Mean daily daylight hours8h 22m9h 57m11h 55m13h 55m15h 39m16h 34m16h 5m14h 31m12h 35m10h 36m8h 49m7h 51m

Solar UV radiation in Douglas, Ireland

Douglas 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 Douglas UV Index data.

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