Aero Club Salland

EHDS · Overijssel, The Netherlands

Statistics Aero Club Salland 2019-2022

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

Calculated from historical METAR data of Deelen Air Base (EHDL) between 2019 and 2022.

VFR conditions (%)

Month Average 2022 2021 2020 2019
January 36.6 24 43 25 38
February 58.2 54 62 48 60
March 68.2 86 64 69 54
April 80.4 75 73 91 86
May 80.5 89 69 89 73
June 80.8 87 75 85 86
July 78.8 83 64 71 80
August 79.0 91 70 81 82
September 73.9 82 69 73 71
October 64.9 75 65 59 57
November 49.8 64 36 55 47
December 34.6 39 34 26 51
Average 69.4 75.6 62.9 69.0 68.9

12th best VFR conditions of The Netherlands

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
January 68.9 64 71 54 70
February 84.3 85 80 91 81
March 89.7 94 89 88 86
April 94.2 90 95 96 97
May 94.2 98 90 97 89
June 93.8 97 88 96 95
July 93.1 93 87 88 97
August 91.6 98 90 93 96
September 88.2 89 89 87 88
October 87.1 90 85 87 84
November 76.4 87 67 77 79
December 61.9 58 55 63 72
Average 87.6 89.8 84.3 87.1 88.0

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.

Maximum temperatures (°C)

Month Average 2022 2021 2020 2019
January 5.7 7 5 8 5
February 7.9 9 8 9 11
March 11.0 13 10 10 11
April 14.7 14 11 18 16
May 18.9 20 15 19 16
June 22.9 23 24 23 24
July 23.5 24 22 21 25
August 23.8 27 21 26 24
September 19.5 20 21 21 19
October 15.4 17 15 14 15
November 9.9 11 9 12 9
December 6.6 3 7 7 8
Average 15.1 15.9 14.0 15.5 15.1

7th highest temperature of The Netherlands

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month Average 2022 2021 2020 2019
January 0.8 2 0 3 0
February 1.1 3 0 4 2
March 1.9 1 1 2 4
April 3.4 3 1 4 5
May 7.1 8 6 5 5
June 12.0 10 13 13 13
July 12.5 12 13 11 13
August 12.9 14 12 15 13
September 9.8 9 11 9 10
October 8.1 9 7 8 8
November 3.9 5 3 5 3
December 2.1 -2 2 3 3
Average 6.3 6.3 5.8 6.7 6.5

3rd lowest temperature of The Netherlands

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2022 2021 2020 2019
January 14.2 11 16 11 25
February 13.0 19 13 19 10
March 9.4 3 8 7 20
April 5.2 9 8 2 2
May 6.4 3 13 3 7
June 5.7 6 5 8 5
July 6.0 2 6 13 5
August 5.6 2 7 5 7
September 9.1 12 5 5 11
October 11.8 8 12 16 18
November 12.7 10 11 10 15
December 16.9 5 13 18 15
Average 8.7 6.8 8.9 8.8 10.4

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
January 8.4 8 8 9 8
February 10.2 13 9 13 8
March 9.4 8 9 11 11
April 8.3 9 8 8 9
May 7.5 7 8 8 8
June 7.1 7 6 7 8
July 6.7 7 6 7 7
August 6.8 7 7 7 7
September 6.8 6 6 7 8
October 8.4 8 8 9 8
November 7.6 9 6 8 7
December 8.0 6 8 8 9
Average 7.8 7.6 7.3 8.3 8.0

7th highest wind speed of The Netherlands

Average wind speed

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

Prevailing wind direction

Month 2022 2021 2020 2019
January 245° 230° 209° 264°
February 232° 152° 221° 211°
March 102° 254° 215° 242°
April 339° 332° 080° 087°
May 258° 231° 330° 296°
June 258° 329° 228° 207°
July 282° 256° 244° 276°
August 342° 266° 217° 217°
September 239° 205° 216° 226°
October 201° 199° 195° 197°
November 186° 224° 193° 178°
December 154° 204° 188° 199°

Prevailing wind direction

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

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