Monthly climate in London, United Kingdom

Last updated: June 25, 2022

Under the Köppen–Geiger climate classification London 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 -5 °C (23 °F) or can rise to as high as 36 °C (96 °F). The average annual precipitation amounts to about 733 mm (28.8 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually. London enjoys an average of 3128 hours of sunshine throughout the year, and daylight varies from 7 hours 53 minutes to 16 hours 32 minutes per day.

Monthly average temperatures in London, United Kingdom §

The warmest months in London are June, July and August, with daily mean temperatures ranging from 16 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, London experiences 13 days above 25 °C (77.0 °F) and 22 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in London, 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)
22°C
(71°F)
26°C
(80°F)
25°C
(78°F)
31°C
(89°F)
36°C
(96°F)
34°C
(93°F)
28°C
(83°F)
22°C
(73°F)
16°C
(62°F)
14°C
(58°F)
Mean maximum 12°C
(54°F)
14°C
(58°F)
17°C
(63°F)
22°C
(72°F)
24°C
(75°F)
27°C
(81°F)
30°C
(87°F)
29°C
(84°F)
25°C
(77°F)
19°C
(67°F)
15°C
(60°F)
13°C
(56°F)
Average high 7°C
(46°F)
9°C
(48°F)
11°C
(52°F)
14°C
(57°F)
17°C
(63°F)
20°C
(69°F)
22°C
(73°F)
22°C
(71°F)
19°C
(67°F)
15°C
(59°F)
11°C
(51°F)
9°C
(48°F)
Daily mean 5°C
(41°F)
6°C
(43°F)
7°C
(46°F)
10°C
(49°F)
13°C
(55°F)
16°C
(62°F)
18°C
(65°F)
18°C
(64°F)
15°C
(59°F)
12°C
(54°F)
8°C
(47°F)
6°C
(44°F)
Average low 2°C
(36°F)
3°C
(38°F)
4°C
(40°F)
5°C
(42°F)
8°C
(47°F)
12°C
(54°F)
14°C
(58°F)
14°C
(57°F)
11°C
(52°F)
9°C
(48°F)
5°C
(42°F)
4°C
(39°F)
Mean minimum -3°C
(26°F)
-3°C
(27°F)
-1°C
(30°F)
-0°C
(32°F)
3°C
(37°F)
8°C
(47°F)
11°C
(52°F)
10°C
(50°F)
6°C
(43°F)
3°C
(38°F)
-1°C
(31°F)
-2°C
(29°F)
Minimum -5°C
(24°F)
-5°C
(23°F)
-5°C
(23°F)
-2°C
(29°F)
1°C
(35°F)
7°C
(45°F)
9°C
(49°F)
8°C
(47°F)
4°C
(39°F)
1°C
(34°F)
-2°C
(29°F)
-4°C
(24°F)

Compare climate in London with other places

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

Monthly average precipitation in London, United Kingdom §

London usually has the most precipitation in June, October and December, with an average of 11 rainy days and 82 mm (3.2 inches) of precipitation per month. The driest months in London are April, September and November. On average, 43 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in London, 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) 54 (2.1) 53 (2.1) 54 (2.1) 33 (1.3) 62 (2.5) 77 (3.0) 64 (2.5) 70 (2.7) 45 (1.8) 84 (3.3) 52 (2.0) 84 (3.3)
Average precipitation days (≥ 1 mm) 10 11 13 8 11 9 11 12 10 12 11 13

Monthly sunshine hours in London, United Kingdom §

The sunniest months in London are May, June and July, when the sun shines an average of 12 hours 56 minutes a day. Least sunny months in London: January, November and December receive an average of 3 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in London, 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 98 148 210 319 398 389 404 368 300 241 144 109
Mean daily daylight hours 8h 23m 9h 58m 11h 55m 13h 54m 15h 38m 16h 32m 16h 3m 14h 30m 12h 35m 10h 36m 8h 50m 7h 53m

Solar UV radiation in London, United Kingdom §

London experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 7 - 9, which corresponds to the High / Very High category of sun exposure. January, November 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 London UV Index data.

Average daily maximum UV levels by month for London, United Kingdom. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 3 4 5 7 4 9 7 6 4 2 1