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Monthly climate in Trefriw, Wales, United Kingdom

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Trefriw 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 (22 °F) or can rise to as high as 29 °C (85 °F).The average annual precipitation amounts to about 1081 mm (42.6 inches) and receives 182 rainy days on the 1 mm (0.04 inches) threshold annually.Trefriw enjoys an average of 3060 hours of sunshine throughout the year, and daylight varies from 7 hours 36 minutes to 16 hours 51 minutes per day.

Monthly average temperatures in Trefriw, Wales, United Kingdom §

The warmest months in Trefriw are June, July and August, with daily mean temperatures ranging from 15 to 16 °C (59 - 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, Trefriw experiences 4 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 Trefriw, 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 14°C
(58°F)		 18°C
(65°F)		 19°C
(66°F)		 22°C
(72°F)		 27°C
(81°F)		 28°C
(84°F)		 29°C
(85°F)		 27°C
(82°F)		 27°C
(81°F)		 21°C
(70°F)		 16°C
(60°F)		 13°C
(56°F)
Mean maximum 12°C
(53°F)		 13°C
(56°F)		 16°C
(61°F)		 20°C
(68°F)		 22°C
(73°F)		 24°C
(76°F)		 27°C
(81°F)		 24°C
(76°F)		 23°C
(73°F)		 18°C
(65°F)		 14°C
(58°F)		 13°C
(55°F)
Average high 7°C
(46°F)		 8°C
(47°F)		 10°C
(50°F)		 12°C
(54°F)		 15°C
(60°F)		 18°C
(65°F)		 19°C
(67°F)		 19°C
(66°F)		 17°C
(62°F)		 13°C
(56°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)		 12°C
(53°F)		 15°C
(59°F)		 16°C
(61°F)		 16°C
(60°F)		 14°C
(57°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
(43°F)		 4°C
(40°F)
Mean minimum -2°C
(29°F)		 -2°C
(30°F)		 -1°C
(30°F)		 -0°C
(32°F)		 1°C
(34°F)		 7°C
(44°F)		 9°C
(48°F)		 8°C
(47°F)		 5°C
(41°F)		 2°C
(36°F)		 -0°C
(32°F)		 -1°C
(30°F)
Minimum -3°C
(26°F)		 -5°C
(24°F)		 -6°C
(22°F)		 -1°C
(30°F)		 -1°C
(31°F)		 6°C
(42°F)		 7°C
(44°F)		 7°C
(45°F)		 3°C
(37°F)		 -2°C
(28°F)		 -2°C
(29°F)		 -3°C
(26°F)

Compare climate in Trefriw with other places

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

Monthly average precipitation in Trefriw, Wales, United Kingdom §

Trefriw usually has the most precipitation in June, October and December, with an average of 16 rainy days and 107 mm (4.2 inches) of precipitation per month.The driest months in Trefriw are January, April and May. On average, 66 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Trefriw, 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) 71 (2.8) 92 (3.6) 96 (3.8) 56 (2.2) 71 (2.8) 99 (3.9) 92 (3.6) 96 (3.8) 96 (3.8) 107 (4.2) 91 (3.6) 115 (4.5)
Average precipitation days (≥ 1 mm) 13 15 16 11 12 13 16 18 15 17 18 18

Monthly sunshine hours in Trefriw, Wales, United Kingdom §

The sunniest months in Trefriw are May, June and July, when the sun shines an average of 12 hours 50 minutes a day.Least sunny months in Trefriw: 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 Trefriw, 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 88 152 211 322 397 378 405 369 297 225 114 98
Mean daily daylight hours 8h 9m 9h 50m 11h 54m 14h 1m 15h 52m 16h 51m 16h 19m 14h 39m 12h 36m 10h 31m 8h 37m 7h 36m

Solar UV radiation in Trefriw, Wales, United Kingdom §

Trefriw 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 Trefriw UV Index data.

Average daily maximum UV levels by month for Trefriw, 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