London, United Kingdom
Climate chart (explanation)
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█ Average max. and min. temperatures in °C
█ Precipitation totals in mm
Imperial conversion
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█ Average max. and min. temperatures in °F
█ Precipitation totals in inches
London on a snowy day in 2018

According to the Koppen Climate Classification, London has a temperate oceanic climate (Cfb).[1] This type of climate features cool winters with frequent cloudy skies and rain showers (and on occasion snow), and mild summers. Precipitation is fairly evenly distributed all year round.

London has a very rich history of meteorological observations, with precipitation records beginning as early as January 1697 at Kew Gardens.[2] Irregular observations were made at multiple locations in the ensuing years. An observing station has been located at Greenwich since 1841, giving London its longest continuous reliable temperature series.[3] Other stations include Heathrow, beginning in 1948,[4] Hampstead, beginning in 1910,[5] Northolt, beginning in 1948,[6] and St James's Park, beginning in 1910.[7]

The highest temperature ever observed in London is 40.2 °C (104.4 °F) provisionally[8] recorded at both Heathrow Airport and St James's Park on 19 July 2022 and the lowest is −16.1 °C (3.0 °F) 1 January 1962.[9] The lowest daily maximum temperature is −8.3 °C (17.1 °F) occurring on 3 occasions: 8 January 1841, 4 January 1867 and 12 January 1987.[10] The highest daily minimum temperature recorded is 25.8 °C (78.4 °F), recorded in Kenley on 19 July 2022.[11] In addition to this, London holds multiple national records, including the record maximum for the months of February, April, May and June.[12]

The city can sometimes experience extremes. Snowfall is an infrequent occurrence in winter, falling on an average of 16 days per year, though infrequently heavy.[13] Thunderstorms are a similarly occurring feature, occurring on average up to 16 days per year.[14] London rarely experiences tornadoes, although an F2 struck Kensal Green on 7 December 2006. Severe weather and extremes in temperature are uncommon.

London is vulnerable to climate change in the United Kingdom, and there is increasing concern among hydrological experts that London households may run out of water before 2050.[15]

Classifications

London Climate according to major climate systems
Climatic scheme Initials Description
Köppen system[16][17] Cfb Oceanic climate[a]
Trewartha system[18][19] Do Temperate oceanic climate
Alisov system[20] — Temperate climate[b]
Strahler system[21] — Marine west-coast
Thornthwaite system[22]
C2 B'1
 Moist subhumid and mesothermal
Neef system[23][24] — West side/maritime climate

Climate data tables

London Weather Centre

Climate data for London Weather Centre, 2001-2009 seminormals
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean daily maximum °C (°F) 8.5
(47.3) 		8.9
(48.0) 		11.7
(53.1) 		15.7
(60.3) 		18.5
(65.3) 		22.4
(72.3) 		23.6
(74.5) 		23.2
(73.8) 		20.8
(69.4) 		16.1
(61.0) 		11.9
(53.4) 		8.6
(47.5) 		15.8
(60.5)
Mean daily minimum °C (°F) 5.0
(41.0) 		4.7
(40.5) 		5.8
(42.4) 		8.2
(46.8) 		10.9
(51.6) 		14.1
(57.4) 		15.5
(59.9) 		15.5
(59.9) 		13.7
(56.7) 		10.9
(51.6) 		8.0
(46.4) 		5.4
(41.7) 		9.8
(49.7)
Source 1: Weather Online [25]
Source 2: Tutiempo [26]

St James's Park - Weather Station near the centre of London

Climate data for St James's Park
WMO ID: 03770; coordinates 51°30′18″N 0°07′52″W / 51.50489°N 0.13099°W / 51.50489; -0.13099 (Met St James's Park); elevation: 5 m (16 ft); extremes 1912–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 16.3
(61.3) 		19.7
(67.5) 		24.3
(75.7) 		29.1
(84.4) 		31.7
(89.1) 		34.6
(94.3) 		40.2
(104.4) 		36.1
(97.0) 		32.5
(90.5) 		29.1
(84.4) 		20.6
(69.1) 		16.9
(62.4) 		40.2
(104.4)
Record low °C (°F) −9.4
(15.1) 		−10.0
(14.0) 		−5.6
(21.9) 		−3.3
(26.1) 		−0.6
(30.9) 		3.3
(37.9) 		7.2
(45.0) 		4.4
(39.9) 		1.1
(34.0) 		−3.3
(26.1) 		−3.9
(25.0) 		−7.0
(19.4) 		−10.0
(14.0)
[citation needed]

Heathrow - Airport Weather Station in the suburbs of West London

Climate data for Heathrow Airport
WMO ID: 03772; coordinates 51°28′45″N 0°27′02″W / 51.47921°N 0.45057°W / 51.47921; -0.45057 (Met Office LHR); elevation: 25 m (82 ft); 1991–2020 normals, extremes 1948–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 16.0
(60.8) 		20.1
(68.2) 		23.8
(74.8) 		28.5
(83.3) 		31.8
(89.2) 		34.8
(94.6) 		40.2
(104.4) 		37.9
(100.2) 		33.0
(91.4) 		28.8
(83.8) 		18.6
(65.5) 		16.6
(61.9) 		40.2
(104.4)
Mean daily maximum °C (°F) 8.4
(47.1) 		9.0
(48.2) 		11.7
(53.1) 		15.0
(59.0) 		18.4
(65.1) 		21.6
(70.9) 		23.9
(75.0) 		23.4
(74.1) 		20.2
(68.4) 		15.8
(60.4) 		11.5
(52.7) 		8.8
(47.8) 		15.7
(60.3)
Daily mean °C (°F) 5.6
(42.1) 		5.8
(42.4) 		7.9
(46.2) 		10.5
(50.9) 		13.7
(56.7) 		16.8
(62.2) 		19.0
(66.2) 		18.7
(65.7) 		15.9
(60.6) 		12.3
(54.1) 		8.4
(47.1) 		5.9
(42.6) 		11.7
(53.1)
Mean daily minimum °C (°F) 2.7
(36.9) 		2.7
(36.9) 		4.1
(39.4) 		6.0
(42.8) 		9.1
(48.4) 		12.0
(53.6) 		14.2
(57.6) 		14.1
(57.4) 		11.6
(52.9) 		8.8
(47.8) 		5.3
(41.5) 		3.1
(37.6) 		7.8
(46.0)
Record low °C (°F) −13.2
(8.2) 		−9.6
(14.7) 		−5.1
(22.8) 		−2.6
(27.3) 		−0.9
(30.4) 		1.5
(34.7) 		5.6
(42.1) 		5.9
(42.6) 		1.8
(35.2) 		−3.3
(26.1) 		−7.0
(19.4) 		−11.8
(10.8) 		−13.2
(8.2)
Average precipitation mm (inches) 58.8
(2.31) 		45.0
(1.77) 		38.8
(1.53) 		42.3
(1.67) 		45.9
(1.81) 		47.3
(1.86) 		45.8
(1.80) 		52.8
(2.08) 		49.6
(1.95) 		65.1
(2.56) 		66.6
(2.62) 		57.1
(2.25) 		615.0
(24.21)
Average precipitation days (≥ 1.0 mm) 11.5 9.5 8.5 8.8 8.0 8.3 7.9 8.4 7.9 10.8 11.2 10.8 111.7
Mean monthly sunshine hours 61.1 78.8 124.5 176.7 207.5 208.4 217.8 202.1 157.1 115.2 70.7 55.0 1,674.8
Source 1: Met Office [29]
Source 2: KNMI [30][31]

Kew Gardens - Weather Station in South West London on the banks of the River Thames

Climate data for Kew Gardens
WMO ID: 99095; coordinates 51°28′55″N 0°17′40″W / 51.48186°N 0.29435°W / 51.48186; -0.29435 (Kew Gardens); elevation: 6 m (20 ft); 1991–2020 normals, extremes 1881–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 16.5
(61.7) 		21.2
(70.2) 		24.5
(76.1) 		28.4
(83.1) 		30.3
(86.5) 		34.6
(94.3) 		40.1
(104.2) 		38.1
(100.6) 		33.2
(91.8) 		29.2
(84.6) 		19.4
(66.9) 		16.8
(62.2) 		40.1
(104.2)
Mean daily maximum °C (°F) 8.6
(47.5) 		9.2
(48.6) 		11.9
(53.4) 		15.1
(59.2) 		18.4
(65.1) 		21.4
(70.5) 		23.8
(74.8) 		23.4
(74.1) 		20.3
(68.5) 		16.0
(60.8) 		11.6
(52.9) 		8.9
(48.0) 		15.7
(60.3)
Daily mean °C (°F) 5.3
(41.5) 		5.6
(42.1) 		7.7
(45.9) 		10.1
(50.2) 		13.3
(55.9) 		16.2
(61.2) 		18.5
(65.3) 		18.2
(64.8) 		15.4
(59.7) 		11.9
(53.4) 		8.0
(46.4) 		5.6
(42.1) 		11.3
(52.3)
Mean daily minimum °C (°F) 2.0
(35.6) 		2.0
(35.6) 		3.5
(38.3) 		5.1
(41.2) 		8.2
(46.8) 		11.0
(51.8) 		13.2
(55.8) 		13.0
(55.4) 		10.5
(50.9) 		7.8
(46.0) 		4.3
(39.7) 		2.3
(36.1) 		6.9
(44.4)
Record low °C (°F) −12.6
(9.3) 		−11.8
(10.8) 		−8.3
(17.1) 		−4.2
(24.4) 		−1.5
(29.3) 		1.5
(34.7) 		5.3
(41.5) 		4.3
(39.7) 		−1.6
(29.1) 		−5.4
(22.3) 		−6.6
(20.1) 		−12.0
(10.4) 		−12.6
(9.3)
Average precipitation mm (inches) 59.9
(2.36) 		45.4
(1.79) 		39.0
(1.54) 		43.6
(1.72) 		44.6
(1.76) 		49.7
(1.96) 		45.2
(1.78) 		55.1
(2.17) 		51.9
(2.04) 		67.9
(2.67) 		66.0
(2.60) 		59.2
(2.33) 		627.5
(24.70)
Average precipitation days (≥ 1.0 mm) 11.8 9.9 8.9 8.6 8.3 8.5 7.6 8.4 8.4 10.9 11.3 11.2 113.8
Mean monthly sunshine hours 60.2 80.7 128.0 181.0 213.4 209.8 221.9 206.5 152.0 117.4 69.7 52.7 1,693.2
Source 1: Met Office [32]
Source 2: Starlings Roost Weather[33][34]


Hampstead - Weather Station in North London

The weather station enclosure is the most elevated of any in the London area, and as a result daytime temperatures are typically one degree lower than Heathrow, Kew, Northolt and Greenwich.

Climate data for Hampstead
WMO ID: 99139; coordinates 51°33′38″N 0°10′48″W / 51.56052°N 0.17995°W / 51.56052; -0.17995 (Hampstead Met Station); elevation: 137 m (449 ft); 1991–2020 normals, extremes 1910–2016
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 15.7
(60.3) 		18.3
(64.9) 		22.8
(73.0) 		27.2
(81.0) 		30.0
(86.0) 		33.7
(92.7) 		34.4
(93.9) 		37.4
(99.3) 		33.9
(93.0) 		28.9
(84.0) 		20.0
(68.0) 		15.6
(60.1) 		37.4
(99.3)
Mean daily maximum °C (°F) 7.5
(45.5) 		8.1
(46.6) 		10.9
(51.6) 		14.1
(57.4) 		17.3
(63.1) 		20.4
(68.7) 		22.7
(72.9) 		22.3
(72.1) 		19.1
(66.4) 		14.8
(58.6) 		10.6
(51.1) 		7.8
(46.0) 		14.7
(58.5)
Daily mean °C (°F) 4.9
(40.8) 		5.2
(41.4) 		7.3
(45.1) 		9.8
(49.6) 		12.8
(55.0) 		15.8
(60.4) 		18.0
(64.4) 		17.8
(64.0) 		15.1
(59.2) 		11.6
(52.9) 		7.8
(46.0) 		5.3
(41.5) 		10.9
(51.6)
Mean daily minimum °C (°F) 2.3
(36.1) 		2.3
(36.1) 		3.7
(38.7) 		5.5
(41.9) 		8.3
(46.9) 		11.2
(52.2) 		13.3
(55.9) 		13.4
(56.1) 		11.1
(52.0) 		8.3
(46.9) 		5.0
(41.0) 		2.7
(36.9) 		7.3
(45.1)
Record low °C (°F) −12.2
(10.0) 		−12.8
(9.0) 		−8.9
(16.0) 		−5.6
(21.9) 		−1.7
(28.9) 		1.7
(35.1) 		4.2
(39.6) 		4.5
(40.1) 		0.6
(33.1) 		−3.3
(26.1) 		−6.1
(21.0) 		−8.4
(16.9) 		−12.8
(9.0)
Average precipitation mm (inches) 69.5
(2.74) 		51.4
(2.02) 		42.8
(1.69) 		49.6
(1.95) 		50.5
(1.99) 		58.5
(2.30) 		50.5
(1.99) 		67.7
(2.67) 		59.1
(2.33) 		78.6
(3.09) 		75.7
(2.98) 		68.3
(2.69) 		722.1
(28.43)
Average precipitation days (≥ 1.0 mm) 12.1 10.7 9.1 9.1 8.5 8.7 8.4 9.3 9.0 11.0 11.9 11.9 119.6
Mean monthly sunshine hours 60.0 76.1 114.2 155.2 199.2 193.7 199.8 188.3 145.5 106.3 67.2 54.0 1,559.4
Source 1: Met Office[35]
Source 2: KNMI [36] Starlings Roost Weather[37][38]


Northolt - Airfield Weather Station in the North West of London

Temperature extremes range from 37.7 °C (99.9 °F) in August 2003, down to −16.1 °C (3.0 °F) in January 1962.

Climate data for RAF Northolt
WMO ID: 03672; coordinates 51°32′55″N 0°25′01″W / 51.54870°N 0.41689°W / 51.54870; -0.41689 (Northolt Station); elevation: 40 m (131 ft); 1991–2020 normals, extremes 1948–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 16.2
(61.2) 		20.8
(69.4) 		24.1
(75.4) 		28.9
(84.0) 		30.6
(87.1) 		35.0
(95.0) 		40.0
(104.0) 		37.7
(99.9) 		32.7
(90.9) 		29.0
(84.2) 		18.8
(65.8) 		16.8
(62.2) 		40.0
(104.0)
Mean daily maximum °C (°F) 8.2
(46.8) 		8.8
(47.8) 		11.6
(52.9) 		14.8
(58.6) 		18.1
(64.6) 		21.2
(70.2) 		23.5
(74.3) 		23.1
(73.6) 		20.0
(68.0) 		15.6
(60.1) 		11.3
(52.3) 		8.6
(47.5) 		15.4
(59.7)
Daily mean °C (°F) 5.1
(41.2) 		5.4
(41.7) 		7.6
(45.7) 		10.0
(50.0) 		13.2
(55.8) 		16.2
(61.2) 		18.4
(65.1) 		18.1
(64.6) 		15.3
(59.5) 		11.8
(53.2) 		7.9
(46.2) 		5.5
(41.9) 		11.2
(52.2)
Mean daily minimum °C (°F) 2.0
(35.6) 		2.0
(35.6) 		3.5
(38.3) 		5.2
(41.4) 		8.3
(46.9) 		11.3
(52.3) 		13.4
(56.1) 		13.2
(55.8) 		10.6
(51.1) 		7.9
(46.2) 		4.5
(40.1) 		2.3
(36.1) 		7.0
(44.6)
Record low °C (°F) −16.1
(3.0) 		−13.9
(7.0) 		−8.0
(17.6) 		−4.7
(23.5) 		−2.7
(27.1) 		0.0
(32.0) 		4.4
(39.9) 		3.0
(37.4) 		0.0
(32.0) 		−5.5
(22.1) 		−7.5
(18.5) 		−17.4
(0.7) 		−17.4
(0.7)
Average precipitation mm (inches) 62.9
(2.48) 		49.1
(1.93) 		42.4
(1.67) 		45.6
(1.80) 		51.8
(2.04) 		50.2
(1.98) 		48.6
(1.91) 		56.6
(2.23) 		51.4
(2.02) 		70.2
(2.76) 		71.4
(2.81) 		63.1
(2.48) 		663.3
(26.11)
Average precipitation days (≥ 1.0 mm) 11.6 10.1 9.1 9.4 8.6 8.6 8.1 9.4 8.5 10.7 11.6 11.3 117.0
Source 1: Met Office [39]
Source 2: Starlings Roost Weather[40][41]


Greenwich - Weather Station in South East London near the river Thames

Climate data for Greenwich Park, elevation: 47 m (154 ft), 1991–2020 normals, extremes 1948–2004
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 16.8
(62.2) 		19.7
(67.5) 		23.3
(73.9) 		25.3
(77.5) 		29.0
(84.2) 		34.5
(94.1) 		35.3
(95.5) 		37.5
(99.5) 		30.2
(86.4) 		26.1
(79.0) 		18.9
(66.0) 		16.4
(61.5) 		37.5
(99.5)
Mean daily maximum °C (°F) 8.5
(47.3) 		9.2
(48.6) 		12.1
(53.8) 		15.4
(59.7) 		18.6
(65.5) 		21.4
(70.5) 		23.8
(74.8) 		23.3
(73.9) 		20.3
(68.5) 		15.8
(60.4) 		11.6
(52.9) 		8.9
(48.0) 		15.8
(60.4)
Daily mean °C (°F) 5.9
(42.6) 		6.2
(43.2) 		8.4
(47.1) 		10.7
(51.3) 		13.8
(56.8) 		16.7
(62.1) 		18.8
(65.8) 		18.7
(65.7) 		15.9
(60.6) 		12.4
(54.3) 		8.8
(47.8) 		6.3
(43.3) 		11.9
(53.4)
Mean daily minimum °C (°F) 3.4
(38.1) 		3.2
(37.8) 		4.7
(40.5) 		6.0
(42.8) 		9.1
(48.4) 		12.0
(53.6) 		13.9
(57.0) 		14.1
(57.4) 		11.6
(52.9) 		9.0
(48.2) 		6.1
(43.0) 		3.8
(38.8) 		8.1
(46.6)
Record low °C (°F) −12.7
(9.1) 		−9.4
(15.1) 		−6.7
(19.9) 		−4.8
(23.4) 		−1.0
(30.2) 		1.1
(34.0) 		5.0
(41.0) 		5.3
(41.5) 		1.1
(34.0) 		−2.1
(28.2) 		−8.0
(17.6) 		−10.5
(13.1) 		−12.7
(9.1)
Average precipitation mm (inches) 43.9
(1.73) 		39.9
(1.57) 		36.5
(1.44) 		38.6
(1.52) 		44.0
(1.73) 		49.3
(1.94) 		36.3
(1.43) 		53.0
(2.09) 		52.4
(2.06) 		58.3
(2.30) 		59.9
(2.36) 		50.7
(2.00) 		562.9
(22.16)
Average precipitation days (≥ 1.0 mm) 10.5 9.2 7.9 8.1 7.9 7.8 7.1 8.2 7.9 10.3 10.6 10.2 105.6
Mean monthly sunshine hours 44.4 66.1 109.7 152.9 198.7 198.6 209.2 198.0 140.6 99.7 58.5 50.1 1,526.4
Source 1: Met Office[42][43][44]
Source 2: Starlings Roost Weather[45][46]

Average UV index

Ultraviolet index[47]
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
1 1 2 4 5 6 6 5 4 2 1 0 3.4

See also

Notes

  1. ^ Also called marine west coast.
  2. ^ Mid-latitude temperate maritime climate

References

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