London Heathrow Airport

EGLL · England, United Kingdom

Climate London Heathrow Airport 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of London Heathrow Airport (EGLL) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 52.8 61 51 54 37 48
February 58.9 51 70 49 65
March 59.0 46 64 65 72
April 77.7 73 89 88 85
May 78.5 71 81 75 95
June 79.7 80 90 64 87
July 84.2 81 91 70 78
August 81.5 78 84 70 78
September 81.9 76 86 68 85
October 67.4 70 78 56 59
November 59.8 65 62 57 44
December 52.7 41 59 40 42
Average 70.2 61.4 67.7 78.6 63.4 76.5

45th best VFR conditions of United Kingdom

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 84.9 95 89 89 63 85
February 88.2 87 99 81 93
March 90.2 87 88 92 94
April 93.9 97 99 98 95
May 95.6 93 97 96 100
June 95.7 97 97 85 99
July 97.8 96 100 96 97
August 95.4 95 96 96 91
September 96.4 96 96 91 97
October 90.9 88 97 91 91
November 85.5 92 86 91 72
December 83.4 82 75 77 74
Average 92.6 94.4 92.3 94.6 89.1 94.0

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month Average 2024 2023 2022 2021 2020
January 8.1 8 9 8 6 10
February 9.6 10 11 8 11
March 11.6 11 13 11 11
April 14.7 14 15 12 18
May 18.2 18 19 15 20
June 22.2 24 22 21 22
July 23.7 22 26 23 23
August 23.0 22 26 21 25
September 20.4 23 19 21 21
October 15.9 17 17 16 14
November 11.1 11 13 11 12
December 8.9 10 5 10 8
Average 14.7 8.2 15.9 16.5 14.4 16.0

4th highest temperature of United Kingdom

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month Average 2024 2023 2022 2021 2020
January 2.6 3 3 2 2 5
February 3.5 4 4 4 5
March 4.9 5 5 5 4
April 5.7 6 6 4 6
May 9.1 9 10 8 9
June 12.8 13 12 14 12
July 15.0 14 16 15 13
August 14.4 14 16 14 15
September 11.9 14 12 13 11
October 9.3 10 10 10 9
November 5.7 5 8 5 7
December 4.2 6 0 6 4
Average 7.6 2.8 8.7 8.6 8.2 8.4

71st lowest temperature of United Kingdom

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 14.1 8 17 11 27 12
February 16.5 4 15 29 24
March 16.1 27 13 4 13
April 8.8 16 3 4 9
May 8.5 7 10 16 1
June 9.1 4 6 19 16
July 7.4 13 1 10 10
August 9.4 10 4 6 12
September 8.8 7 11 8 6
October 14.3 13 9 12 30
November 16.1 19 22 8 13
December 17.7 25 10 15 21
Average 11.1 7.8 12.6 8.5 12.4 11.9

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (knots)

Month Average 2024 2023 2022 2021 2020
January 8.7 9 10 7 8 10
February 10.3 8 14 8 14
March 9.9 10 8 9 11
April 7.9 8 9 7 7
May 7.6 7 8 9 8
June 8.3 8 8 6 9
July 8.3 11 8 7 9
August 8.2 9 7 8 8
September 8.0 8 7 7 8
October 9.1 9 9 10 10
November 8.4 9 9 7 7
December 9.1 11 5 9 8
Average 8.6 9.4 8.8 8.3 7.7 9.1

4th highest wind speed of United Kingdom

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month 2024 2023 2022 2021 2020
January 248° 247° 255° 262° 228°
February 260° 245° 153° 243°
March 229° 109° 255° 247°
April 176° 013° 040° 091°
May 044° 247° 235° 318°
June 091° 222° 335° 215°
July 240° 246° 226° 255°
August 240° 192° 238° 236°
September 210° 261° 219° 263°
October 222° 213° 226° 244°
November 256° 218° 273° 225°
December 239° 039° 232° 215°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.