Butendiek

EKBU · Denmark

Climate Butendiek 2020-2024

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

Calculated from historical METAR data of Westerland Sylt Airport (EDXW) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 49.6 60 52 51 54 38
February 51.3 33 59 62 78 50
March 60.8 59 61 78 56 71
April 80.0 70 85 84 84 100
May 75.1 83 74 78 54 78
June 77.6 79 77 73 76 85
July 80.5 82 78 76 82
August 88.2 85 88 83 89
September 79.2 84 84 71 73
October 70.7 54 77 73 79
November 51.9 64 51 50 50
December 45.6 49 46 43 21
Average 70.4 67.6 71.6 74.3 68.4 70.8

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 77.0 87 87 79 78 65
February 73.4 57 79 82 84 83
March 77.9 82 74 86 82 87
April 90.6 88 93 96 95 100
May 88.0 91 92 94 79 89
June 93.7 97 89 93 95 97
July 94.4 93 95 97 94
August 97.3 97 96 99 99
September 92.2 92 95 93 90
October 86.1 78 88 88 92
November 79.0 92 83 82 74
December 68.4 63 73 63 52
Average 86.6 86.1 87.3 90.3 88.1 87.2

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 5.0 5 7 7 4 7
February 5.3 7 7 7 3 7
March 7.3 9 7 9 7 8
April 11.4 12 12 11 9 9
May 15.2 19 15 15 12 14
June 19.1 18 20 18 19 20
July 20.1 20 20 22 18
August 21.1 20 23 20 23
September 18.1 21 18 19 18
October 13.8 13 15 14 14
November 8.7 8 10 10 10
December 5.8 6 4 6 6
Average 12.5 11.3 12.8 13.2 12.0 13.3

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 2.5 1 3 4 1 6
February 2.5 4 3 4 -1 5
March 3.3 5 3 1 2 6
April 5.7 6 5 5 4 9
May 9.8 12 9 9 8 8
June 13.4 13 13 12 13 13
July 15.4 15 15 15 13
August 15.9 15 16 14 16
September 13.1 15 11 13 12
October 10.2 10 11 10 10
November 5.7 4 6 6 6
December 3.3 3 0 2 4
Average 8.3 6.6 7.9 7.9 7.2 9.0

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 10.5 11 12 11 7 15
February 12.9 20 4 21 0 24
March 8.6 5 15 2 4 9
April 5.3 10 6 3 4 100
May 4.4 5 2 5 11 3
June 4.4 5 1 4 3 4
July 4.7 8 5 2 5
August 3.9 4 1 3 3
September 8.2 6 14 4 4
October 12.8 19 6 16 14
November 13.1 17 14 16 3
December 14.0 18 10 17 10
Average 7.7 8.5 8.2 6.9 6.5 7.1

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 13.1 14 13 14 12 14
February 14.2 14 13 17 14 17
March 13.2 13 14 10 13 15
April 13.2 13 13 13 14 12
May 12.5 12 14 12 12 13
June 11.3 12 11 11 10 11
July 12.6 14 13 12 12
August 11.6 12 10 13 10
September 11.9 11 12 11 12
October 13.5 15 13 13 13
November 12.6 13 14 12 13
December 12.6 14 11 12 11
Average 12.6 12.8 12.7 12.3 12.1 12.5

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 260° 243° 275° 248° 238°
February 231° 284° 251° 130° 237°
March 138° 261° 108° 261° 229°
April 235° 074° 318° 325° 100°
May 089° 001° 276° 267° 303°
June 274° 327° 266° 324° 124°
July 251° 288° 306° 270°
August 265° 316° 295° 216°
September 216° 019° 264° 258°
October 242° 222° 234° 198°
November 182° 174° 268° 225°
December 257° 114° 203° 161°

Prevailing wind direction

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