RAF Northolt

EGWU · England, United Kingdom

Climate RAF Northolt 2020-2024

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

Calculated from historical METAR data of RAF Northolt (EGWU) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 58.5 72 57 59 49 56
February 63.5 48 53 79 69 72
March 65.3 53 69 74 75
April 81.5 73 91 90 85
May 82.2 73 86 79 97
June 81.3 79 91 71 87
July 85.7 82 93 82 83
August 84.1 79 89 78 80
September 82.1 77 89 72 87
October 73.3 74 81 70 71
November 64.6 70 63 65 61
December 54.3 44 60 42 54
Average 73.5 59.1 69.9 82.0 72.3 78.4

15th 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 85.3 94 89 86 70 87
February 88.4 80 86 99 88 92
March 90.7 86 90 94 95
April 94.2 96 97 99 95
May 95.6 92 97 96 100
June 95.0 97 96 88 98
July 96.9 95 100 95 97
August 94.9 95 97 95 91
September 96.0 96 96 92 97
October 91.7 89 95 93 94
November 86.0 89 83 92 80
December 81.8 80 78 77 77
Average 91.8 86.7 91.5 94.2 91.0 93.3

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 9 7 10
February 10.0 12 11 11 9 11
March 11.7 11 13 12 11
April 14.8 14 15 12 18
May 18.3 18 19 16 20
June 22.2 25 22 22 22
July 23.9 22 26 23 22
August 23.1 22 26 21 24
September 20.5 24 19 22 21
October 16.1 17 18 16 15
November 11.3 11 13 11 12
December 9.1 10 6 10 9
Average 15.1 9.9 16.0 16.7 14.9 16.1

2nd 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 1.7 2 2 1 1 4
February 3.1 6 3 4 3 4
March 4.3 5 4 3 3
April 4.8 5 5 2 5
May 8.2 9 9 7 8
June 11.7 13 8 13 12
July 12.9 12 8 14 12
August 12.9 13 11 13 15
September 10.9 14 11 12 10
October 8.0 9 7 8 8
November 4.5 5 6 4 5
December 3.4 5 -1 5 3
Average 6.8 3.7 7.7 6.2 7.1 7.5

19th 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 19.4 14 23 14 32 16
February 24.6 32 8 21 31 34
March 21.8 40 18 14 16
April 11.4 19 7 7 7
May 12.6 11 17 21 2
June 10.7 7 13 12 14
July 12.7 24 5 17 13
August 14.2 22 7 13 16
September 13.8 14 19 13 8
October 20.9 26 18 15 38
November 20.1 31 27 10 16
December 22.7 36 11 22 24
Average 16.9 23.6 20.7 13.9 16.4 15.6

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 8.6 10 9 7 8 9
February 10.2 10 8 13 9 14
March 10.1 10 9 10 12
April 8.4 8 10 8 8
May 8.2 9 8 9 9
June 8.3 8 8 7 9
July 8.1 10 8 7 9
August 8.0 8 7 8 9
September 7.9 7 7 7 9
October 8.7 8 8 9 10
November 8.2 9 9 7 8
December 8.6 10 6 9 8
Average 8.7 9.6 8.6 8.2 8.2 9.2

2nd 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 262° 257° 268° 288° 238°
February 243° 279° 254° 159° 255°
March 238° 104° 273° 328°
April 091° 028° 043° 090°
May 040° 255° 237° 008°
June 067° 235° 358° 228°
July 247° 261° 259° 267°
August 250° 017° 279° 254°
September 210° 293° 222° 295°
October 222° 219° 240° 239°
November 266° 219° 295° 229°
December 244° 028° 248° 231°

Prevailing wind direction

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