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Monthly climate in Swanley, England, United Kingdom

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Swanley features a oceanic climate (Cfb).Temperatures typically range between 5 °C (41 °F) and 18 °C (65 °F) through the year, but rarely can drop to -6 °C (22 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 717 mm (28.2 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually.Swanley enjoys an average of 3236 hours of sunshine throughout the year, and daylight varies from 7 hours 53 minutes to 16 hours 33 minutes per day.

Monthly average temperatures in Swanley, England, United Kingdom §

The warmest months in Swanley are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (62 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 6 °C (41 - 44 °F) throughout the day. On average each year, Swanley experiences 11 days above 25 °C (77.0 °F) and 17 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Swanley, England, 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)		 17°C
(63°F)		 21°C
(70°F)		 25°C
(77°F)		 25°C
(77°F)		 31°C
(87°F)		 35°C
(95°F)		 33°C
(92°F)		 27°C
(81°F)		 23°C
(73°F)		 17°C
(62°F)		 14°C
(58°F)
Mean maximum 12°C
(54°F)		 14°C
(58°F)		 17°C
(63°F)		 22°C
(71°F)		 23°C
(74°F)		 26°C
(79°F)		 30°C
(86°F)		 28°C
(83°F)		 25°C
(76°F)		 20°C
(68°F)		 15°C
(60°F)		 13°C
(56°F)
Average high 7°C
(46°F)		 9°C
(48°F)		 11°C
(52°F)		 13°C
(56°F)		 17°C
(62°F)		 20°C
(69°F)		 22°C
(72°F)		 22°C
(71°F)		 19°C
(67°F)		 15°C
(59°F)		 11°C
(52°F)		 9°C
(48°F)
Daily mean 5°C
(41°F)		 6°C
(43°F)		 8°C
(46°F)		 10°C
(49°F)		 13°C
(55°F)		 17°C
(62°F)		 18°C
(65°F)		 18°C
(64°F)		 15°C
(60°F)		 12°C
(54°F)		 8°C
(47°F)		 6°C
(44°F)
Average low 3°C
(37°F)		 3°C
(39°F)		 5°C
(41°F)		 6°C
(43°F)		 9°C
(48°F)		 13°C
(55°F)		 14°C
(58°F)		 14°C
(58°F)		 12°C
(53°F)		 9°C
(49°F)		 6°C
(42°F)		 4°C
(40°F)
Mean minimum -2°C
(28°F)		 -2°C
(28°F)		 -0°C
(32°F)		 0°C
(33°F)		 3°C
(38°F)		 9°C
(48°F)		 11°C
(52°F)		 10°C
(51°F)		 7°C
(44°F)		 4°C
(39°F)		 -1°C
(31°F)		 -1°C
(31°F)
Minimum -4°C
(25°F)		 -6°C
(22°F)		 -5°C
(23°F)		 -1°C
(30°F)		 1°C
(35°F)		 8°C
(46°F)		 10°C
(50°F)		 9°C
(48°F)		 4°C
(40°F)		 1°C
(34°F)		 -2°C
(30°F)		 -3°C
(27°F)

Compare climate in Swanley with other places

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

Monthly average precipitation in Swanley, England, United Kingdom §

Swanley usually has the most precipitation in June, October and December, with an average of 11 rainy days and 80 mm (3.1 inches) of precipitation per month.The driest months in Swanley are April, September and November. On average, 41 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Swanley, England, 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) 52 (2.1) 52 (2.1) 52 (2.0) 31 (1.2) 63 (2.5) 75 (3.0) 62 (2.4) 71 (2.8) 46 (1.8) 80 (3.1) 48 (1.9) 85 (3.4)
Average precipitation days (≥ 1 mm) 9 12 13 8 11 9 12 11 10 13 10 13

Monthly sunshine hours in Swanley, England, United Kingdom §

The sunniest months in Swanley are May, June and July, when the sun shines an average of 13 hours 21 minutes a day.Least sunny months in Swanley: January, February and December receive an average of 3 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Swanley, England, 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 96 150 221 330 409 405 414 385 311 247 153 110
Mean daily daylight hours 8h 23m 9h 58m 11h 55m 13h 54m 15h 38m 16h 33m 16h 3m 14h 30m 12h 35m 10h 36m 8h 50m 7h 53m

Solar UV radiation in Swanley, England, United Kingdom §

Swanley 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 Swanley UV Index data.

Average daily maximum UV levels by month for Swanley, England, 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