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Monthly climate in Gretna, Scotland, United Kingdom

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Gretna features a oceanic climate (Cfb).Temperatures typically range between 4 °C (40 °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 30 °C (87 °F).The average annual precipitation amounts to about 1077 mm (42.4 inches) and receives 172 rainy days on the 1 mm (0.04 inches) threshold annually.Gretna enjoys an average of 2929 hours of sunshine throughout the year, and daylight varies from 7 hours 15 minutes to 17 hours 15 minutes per day.

Monthly average temperatures in Gretna, Scotland, United Kingdom §

The warmest months in Gretna 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 4 to 5 °C (40 - 41 °F) throughout the day. On average each year, Gretna experiences 4 days above 25 °C (77.0 °F) and 36 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Gretna, Scotland, 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)		 16°C
(61°F)		 18°C
(64°F)		 22°C
(72°F)		 26°C
(80°F)		 28°C
(83°F)		 30°C
(87°F)		 27°C
(82°F)		 27°C
(82°F)		 21°C
(70°F)		 14°C
(58°F)		 13°C
(55°F)
Mean maximum 11°C
(52°F)		 12°C
(54°F)		 15°C
(58°F)		 18°C
(65°F)		 23°C
(73°F)		 23°C
(74°F)		 26°C
(78°F)		 24°C
(76°F)		 22°C
(72°F)		 17°C
(63°F)		 13°C
(56°F)		 12°C
(54°F)
Average high 6°C
(44°F)		 7°C
(45°F)		 9°C
(49°F)		 12°C
(54°F)		 15°C
(59°F)		 18°C
(64°F)		 20°C
(67°F)		 18°C
(65°F)		 16°C
(61°F)		 13°C
(55°F)		 9°C
(49°F)		 7°C
(45°F)
Daily mean 4°C
(40°F)		 5°C
(41°F)		 6°C
(43°F)		 8°C
(46°F)		 11°C
(52°F)		 14°C
(58°F)		 16°C
(61°F)		 15°C
(59°F)		 13°C
(55°F)		 10°C
(50°F)		 7°C
(45°F)		 5°C
(41°F)
Average low 2°C
(36°F)		 2°C
(37°F)		 3°C
(37°F)		 4°C
(39°F)		 7°C
(44°F)		 10°C
(51°F)		 12°C
(54°F)		 12°C
(54°F)		 9°C
(49°F)		 7°C
(45°F)		 4°C
(40°F)		 3°C
(37°F)
Mean minimum -5°C
(24°F)		 -4°C
(24°F)		 -3°C
(27°F)		 -2°C
(29°F)		 0°C
(33°F)		 6°C
(42°F)		 7°C
(45°F)		 6°C
(44°F)		 3°C
(38°F)		 -1°C
(31°F)		 -2°C
(28°F)		 -4°C
(26°F)
Minimum -8°C
(17°F)		 -9°C
(16°F)		 -5°C
(23°F)		 -3°C
(26°F)		 -2°C
(29°F)		 5°C
(41°F)		 6°C
(43°F)		 5°C
(42°F)		 2°C
(36°F)		 -4°C
(26°F)		 -4°C
(24°F)		 -6°C
(21°F)

Compare climate in Gretna with other places

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

Monthly average precipitation in Gretna, Scotland, United Kingdom §

Gretna usually has the most precipitation in February, August and October, with an average of 17 rainy days and 118 mm (4.7 inches) of precipitation per month.The driest months in Gretna are January, April and May. On average, 58 mm (2.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Gretna, Scotland, 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) 73 (2.9) 117 (4.6) 98 (3.9) 40 (1.6) 60 (2.4) 95 (3.7) 87 (3.4) 113 (4.5) 85 (3.3) 124 (4.9) 87 (3.4) 97 (3.8)
Average precipitation days (≥ 1 mm) 11 16 15 8 13 14 14 18 14 18 15 16

Monthly sunshine hours in Gretna, Scotland, United Kingdom §

The sunniest months in Gretna are May, June and July, when the sun shines an average of 12 hours 32 minutes a day.Least sunny months in Gretna: January, November and December receive an average of 2 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Gretna, Scotland, 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 76 136 199 325 392 366 394 346 283 211 115 79
Mean daily daylight hours 7h 51m 9h 41m 11h 53m 14h 9m 16h 10m 17h 15m 16h 40m 14h 50m 12h 39m 10h 24m 8h 22m 7h 15m

Solar UV radiation in Gretna, Scotland, United Kingdom §

Gretna experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 6 - 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 Gretna UV Index data.

Average daily maximum UV levels by month for Gretna, Scotland, 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 3 5 6 8 8 6 5 3 2 1