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Monthly climate in Hay, Wales, United Kingdom

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Hay features a oceanic climate (Cfb).Temperatures typically range between 4 °C (39 °F) and 16 °C (61 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 28 °C (83 °F).The average annual precipitation amounts to about 1085 mm (42.7 inches) and receives 162 rainy days on the 1 mm (0.04 inches) threshold annually.Hay enjoys an average of 2787 hours of sunshine throughout the year, and daylight varies from 7 hours 48 minutes to 16 hours 38 minutes per day.

Monthly average temperatures in Hay, Wales, United Kingdom §

The warmest months in Hay are June, July and August, with daily mean temperatures ranging from 14 to 16 °C (57 - 61 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 5 °C (39 - 42 °F) throughout the day. On average each year, Hay experiences 4 days above 25 °C (77.0 °F) and 42 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hay, 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 12°C
(54°F)		 16°C
(61°F)		 19°C
(66°F)		 21°C
(71°F)		 25°C
(76°F)		 28°C
(82°F)		 28°C
(82°F)		 28°C
(83°F)		 27°C
(80°F)		 21°C
(70°F)		 15°C
(59°F)		 12°C
(54°F)
Mean maximum 11°C
(51°F)		 12°C
(54°F)		 15°C
(59°F)		 19°C
(67°F)		 21°C
(69°F)		 24°C
(75°F)		 26°C
(79°F)		 24°C
(76°F)		 23°C
(73°F)		 17°C
(63°F)		 13°C
(56°F)		 11°C
(53°F)
Average high 6°C
(44°F)		 7°C
(45°F)		 9°C
(48°F)		 12°C
(53°F)		 15°C
(59°F)		 18°C
(64°F)		 20°C
(68°F)		 18°C
(65°F)		 17°C
(62°F)		 13°C
(55°F)		 9°C
(49°F)		 7°C
(45°F)
Daily mean 4°C
(39°F)		 5°C
(41°F)		 6°C
(42°F)		 8°C
(46°F)		 11°C
(52°F)		 14°C
(57°F)		 16°C
(61°F)		 15°C
(59°F)		 13°C
(55°F)		 10°C
(50°F)		 7°C
(44°F)		 5°C
(42°F)
Average low 1°C
(35°F)		 2°C
(36°F)		 2°C
(37°F)		 4°C
(39°F)		 6°C
(44°F)		 10°C
(50°F)		 12°C
(53°F)		 12°C
(53°F)		 9°C
(49°F)		 7°C
(45°F)		 4°C
(39°F)		 3°C
(37°F)
Mean minimum -4°C
(24°F)		 -4°C
(25°F)		 -3°C
(27°F)		 -3°C
(28°F)		 -0°C
(32°F)		 5°C
(42°F)		 7°C
(45°F)		 6°C
(44°F)		 4°C
(39°F)		 1°C
(35°F)		 -3°C
(27°F)		 -4°C
(25°F)
Minimum -8°C
(18°F)		 -7°C
(20°F)		 -8°C
(18°F)		 -4°C
(25°F)		 -2°C
(29°F)		 4°C
(40°F)		 5°C
(41°F)		 5°C
(41°F)		 2°C
(35°F)		 -3°C
(27°F)		 -4°C
(25°F)		 -9°C
(16°F)

Compare climate in Hay with other places

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

Monthly average precipitation in Hay, Wales, United Kingdom §

Hay usually has the most precipitation in February, October and December, with an average of 15 rainy days and 112 mm (4.4 inches) of precipitation per month.The driest months in Hay are January, April and September. On average, 67 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hay, 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) 68 (2.7) 104 (4.1) 102 (4.0) 60 (2.4) 88 (3.5) 86 (3.4) 80 (3.1) 92 (3.6) 74 (2.9) 117 (4.6) 98 (3.9) 117 (4.6)
Average precipitation days (≥ 1 mm) 12 15 16 9 13 14 12 13 12 14 15 17

Monthly sunshine hours in Hay, Wales, United Kingdom §

The sunniest months in Hay are May, June and July, when the sun shines an average of 11 hours 54 minutes a day.Least sunny months in Hay: January, November and December receive an average of 3 hours 0 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hay, 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 76 124 181 293 367 343 383 335 270 209 110 90
Mean daily daylight hours 8h 19m 9h 56m 11h 54m 13h 56m 15h 42m 16h 38m 16h 8m 14h 33m 12h 35m 10h 34m 8h 46m 7h 48m

Solar UV radiation in Hay, Wales, United Kingdom §

Hay 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 Hay UV Index data.

Average daily maximum UV levels by month for Hay, 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 6 7 8 8 7 6 4 2 1