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Monthly climate in Dolgellau, Wales, United Kingdom

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Dolgellau features a oceanic climate (Cfb).Temperatures typically range between 5 °C (42 °F) and 16 °C (61 °F) through the year, but rarely can drop to -6 °C (21 °F) or can rise to as high as 29 °C (84 °F).The average annual precipitation amounts to about 1460 mm (57.5 inches) and receives 198 rainy days on the 1 mm (0.04 inches) threshold annually.Dolgellau enjoys an average of 3206 hours of sunshine throughout the year, and daylight varies from 7 hours 41 minutes to 16 hours 46 minutes per day.

Monthly average temperatures in Dolgellau, Wales, United Kingdom §

The warmest months in Dolgellau are June, July and August, 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 December, when daily mean temperatures range from 5 to 6 °C (42 - 44 °F) throughout the day. On average each year, Dolgellau experiences 5 days above 25 °C (77.0 °F) and 15 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Dolgellau, Wales, United Kingdom.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 13°C
(56°F)		 18°C
(65°F)		 18°C
(65°F)		 22°C
(72°F)		 27°C
(80°F)		 28°C
(83°F)		 29°C
(84°F)		 27°C
(80°F)		 27°C
(82°F)		 21°C
(70°F)		 15°C
(59°F)		 13°C
(55°F)
Mean maximum 11°C
(52°F)		 12°C
(54°F)		 15°C
(60°F)		 20°C
(68°F)		 22°C
(72°F)		 24°C
(76°F)		 27°C
(80°F)		 24°C
(75°F)		 22°C
(73°F)		 18°C
(64°F)		 14°C
(57°F)		 12°C
(54°F)
Average high 7°C
(45°F)		 8°C
(47°F)		 9°C
(49°F)		 12°C
(54°F)		 15°C
(59°F)		 18°C
(64°F)		 19°C
(66°F)		 18°C
(64°F)		 16°C
(62°F)		 13°C
(55°F)		 10°C
(50°F)		 8°C
(47°F)
Daily mean 5°C
(42°F)		 6°C
(43°F)		 7°C
(44°F)		 9°C
(48°F)		 11°C
(53°F)		 14°C
(58°F)		 16°C
(61°F)		 15°C
(60°F)		 13°C
(56°F)		 11°C
(52°F)		 8°C
(47°F)		 6°C
(44°F)
Average low 3°C
(38°F)		 4°C
(39°F)		 4°C
(39°F)		 5°C
(41°F)		 8°C
(46°F)		 11°C
(52°F)		 13°C
(55°F)		 13°C
(55°F)		 11°C
(51°F)		 9°C
(48°F)		 6°C
(42°F)		 4°C
(40°F)
Mean minimum -2°C
(29°F)		 -2°C
(29°F)		 -1°C
(31°F)		 -0°C
(32°F)		 2°C
(35°F)		 7°C
(44°F)		 9°C
(48°F)		 8°C
(47°F)		 5°C
(42°F)		 2°C
(37°F)		 0°C
(32°F)		 -2°C
(30°F)
Minimum -3°C
(26°F)		 -5°C
(24°F)		 -6°C
(21°F)		 -3°C
(28°F)		 0°C
(32°F)		 5°C
(42°F)		 6°C
(44°F)		 7°C
(45°F)		 2°C
(36°F)		 -2°C
(28°F)		 -1°C
(30°F)		 -3°C
(26°F)

Compare climate in Dolgellau with other places

Compare temperature, precipitation, sunshine, UV index in Dolgellau, Wales, United Kingdom with other places around the world.

Monthly average precipitation in Dolgellau, Wales, United Kingdom §

Dolgellau usually has the most precipitation in February, October and December, with an average of 18 rainy days and 159 mm (6.2 inches) of precipitation per month.The driest months in Dolgellau are April, May and July. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Dolgellau, Wales, United Kingdom.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 105 (4.2) 145 (5.7) 138 (5.5) 58 (2.3) 85 (3.3) 96 (3.8) 91 (3.6) 144 (5.7) 130 (5.1) 161 (6.3) 138 (5.4) 170 (6.7)
Average precipitation days (≥ 1 mm) 14 17 18 12 13 16 14 20 16 19 19 20

Monthly sunshine hours in Dolgellau, Wales, United Kingdom §

The sunniest months in Dolgellau are May, June and July, when the sun shines an average of 13 hours 23 minutes a day.Least sunny months in Dolgellau: January, November and December receive an average of 3 hours 31 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Dolgellau, Wales, United Kingdom.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 93 157 224 329 410 401 419 385 313 238 124 106
Mean daily daylight hours 8h 13m 9h 52m 11h 54m 13h 59m 15h 48m 16h 46m 16h 15m 14h 36m 12h 36m 10h 32m 8h 41m 7h 41m

Solar UV radiation in Dolgellau, Wales, United Kingdom §

Dolgellau 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 Dolgellau UV Index data.

Average daily maximum UV levels by month for Dolgellau, Wales, United Kingdom.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 2 4 5 7 8 8 7 5 4 2 1