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
100.0
100
100
February
100.0
100
100
100
March
99.3
100
98
100
April
99.3
99
May
99.7
100
100
June
99.7
100
100
July
99.4
100
0
August
99.7
100
98
100
September
100.0
100
100
100
October
98.9
99
100
November
99.2
99
0
100
December
99.4
100
0
Average
99.6
100.0
99.4
100.0
98.1
100.0
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
32.9
34
26
February
33.4
34
22
27
March
33.3
35
32
22
April
31.7
32
May
30.9
31
21
June
30.0
30
20
July
29.2
30
19
August
27.8
29
24
27
September
28.5
30
23
32
October
30.1
31
27
November
28.9
31
18
19
December
32.1
33
21
Average
25.5
34.2
30.7
22.8
23.1
29.5
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
23.8
24
23
February
24.7
25
22
27
March
24.1
24
25
22
April
23.9
24
May
21.8
22
21
June
21.4
22
20
July
20.9
21
19
August
20.6
21
20
20
September
19.9
20
21
23
October
18.6
18
27
November
19.1
19
18
19
December
21.5
22
21
Average
21.4
24.1
21.1
21.8
20.6
21.5
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
0.0
0
0
February
1.1
1
0
0
March
1.5
0
4
0
April
0.9
1
May
0.0
0
0
June
0.0
0
0
July
0.2
0
0
August
0.0
0
0
0
September
0.0
0
0
0
October
0.0
0
0
November
0.2
0
0
0
December
0.8
1
0
Average
0.1
0.3
0.4
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
2024
2023
2022
2021
2020
January
7.5
8
3
February
6.7
7
3
2
March
6.6
7
6
5
April
5.0
5
May
6.1
6
4
June
6.9
7
5
July
7.3
7
0
August
7.3
7
7
8
September
9.1
9
7
9
October
8.9
9
13
November
8.9
9
0
6
December
8.0
8
0
Average
7.1
7.1
7.4
3.1
7.1
8.2
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
196°
175°
February
206°
194°
360°
March
202°
240°
180°
April
218°
May
184°
180°
June
183°
180°
July
184°
360°
August
190°
183°
189°
September
193°
196°
202°
October
195°
198°
November
193°
360°
174°
December
195°
360°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.