London Heathrow Airport

EGLL · England, United Kingdom

Statistics London Heathrow Airport2018-2022

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

Calculated from historical METAR data of London Heathrow Airport (EGLL) between 2018 and 2022.

Maximum temperatures (°C)

Month Average 2022 2021 2020 2019 2018
January 8.2 8 6 10 7 9
February 9.6 11 8 11 12 7
March 11.3 13 11 11 13 9
April 14.7 15 12 18 15 15
May 18.3 19 15 20 18 20
June 21.6 22 21 22 21 23
July 24.5 26 23 23 25 27
August 23.6 26 21 25 24 24
September 20.3 19 21 21 20 20
October 15.5 17 16 14 15 16
November 10.9 11 12 10 12
December 9.3 10 8 10 10
Average 17.5 14.4 16.0 15.6 15.9
  • 10th highest temperature of United Kingdom
  • 3,523rd highest temperature of the world

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month Average 2022 2021 2020 2019 2018
January 3.0 2 2 5 2 4
February 3.3 4 4 5 4 0
March 4.5 5 5 4 6 3
April 5.7 6 4 6 6 8
May 8.9 10 8 9 9 10
June 12.6 12 14 12 12 13
July 15.0 16 15 13 15 16
August 14.7 16 14 15 14 14
September 11.7 12 13 11 12 11
October 9.0 10 10 9 9 8
November 5.7 5 7 5 6
December 4.7 6 4 4 5
Average 9.2 8.1 8.4 8.0 8.0
  • 62nd lowest temperature of United Kingdom
  • 2,140th lowest temperature of the world

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

VFR conditions (%)

Month Average 2022 2021 2020 2019 2018
January 51.3 54 37 48 68 50
February 64.0 70 49 65 61 76
March 62.6 64 65 72 64 49
April 78.5 89 88 85 71 60
May 81.8 81 75 95 83 75
June 78.2 90 64 87 78 73
July 83.4 91 70 78 86 93
August 81.7 84 70 78 91 86
September 82.7 86 68 85 86 88
October 66.0 78 56 59 72 65
November 53.8 57 44 56 60
December 50.7 40 42 68 53
Average 78.5 61.6 69.6 73.5 69.0
  • 72nd best VFR conditions of United Kingdom
  • 4,202nd best VFR conditions of the world

VFR conditions during daylight period

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

Marginal VFR conditions (%)

Month Average 2022 2021 2020 2019 2018
January 82.0 89 63 85 94 79
February 89.5 99 81 93 82 93
March 91.3 88 92 94 97 86
April 92.7 99 98 95 90 82
May 95.7 97 96 100 96 91
June 93.8 97 85 99 96 93
July 98.0 100 96 97 98 99
August 95.7 96 96 91 98 97
September 96.3 96 91 97 100 99
October 91.6 97 91 91 93 86
November 81.9 91 72 80 85
December 83.2 77 74 93 90
Average 95.6 87.9 90.6 93.0 90.0

Marginal VFR conditions or better during daylight period

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

Precipitation (%)

Month Average 2022 2021 2020 2019 2018
January 14.6 11 27 12 6 18
February 20.8 15 29 24 15 21
March 13.9 13 4 13 13 27
April 7.8 3 4 9 7 17
May 9.1 10 16 1 10 9
June 11.8 6 19 16 17 2
July 6.5 1 10 10 8 4
August 8.8 4 6 12 10 12
September 8.4 11 8 6 10 7
October 17.1 9 12 30 23 12
November 14.2 8 13 20 16
December 16.8 15 21 17 14
Average 8.2 13.1 13.7 13.0 13.2

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 2022 2021 2020 2019 2018
January 8.7 7 8 10 8 11
February 10.8 14 8 14 9 9
March 9.6 8 9 11 11 9
April 7.9 9 7 7 8 9
May 7.8 8 9 8 7 6
June 7.8 8 6 9 9 7
July 7.7 8 7 9 8 7
August 8.2 7 8 8 10 8
September 7.9 7 7 8 9 9
October 9.1 9 10 10 9 8
November 7.6 7 7 7 9
December 9.0 9 8 10 10
Average 8.4 7.8 9.1 8.7 8.5
  • 10th highest wind speed of United Kingdom
  • 3,523rd highest wind speed of the world

Prevailing wind direction

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

Prevailing wind direction

Month 2022 2021 2020 2019 2018
January 255° 262° 228° 274° 244°
February 245° 153° 243° 224° 013°
March 109° 255° 247° 257° 135°
April 013° 040° 091° 106° 211°
May 247° 235° 318° 274° 020°
June 222° 335° 215° 208° 313°
July 246° 226° 255° 243° 218°
August 192° 238° 236° 230° 246°
September 261° 219° 263° 244° 242°
October 213° 226° 244° 228° 255°
November 273° 225° 199° 165°
December 232° 215° 230° 228°

Prevailing wind direction

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

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