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
2025
2024
2023
2022
January
54.4
75
50
50
59
February
78.7
50
82
75
March
84.6
100
100
76
92
April
92.1
93
92
May
93.2
88
97
96
June
96.0
96
July
72.9
73
August
82.6
100
83
September
77.9
100
100
78
October
82.8
83
November
62.5
0
100
63
December
44.6
38
45
Average
75.3
89.3
54.1
78.2
79.5
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
2025
2024
2023
2022
January
26.8
26.3
29.0
28.0
25.6
February
30.8
24.6
32.2
30.1
March
33.3
36.3
31.0
31.1
35.0
April
36.6
34.7
38.5
May
35.0
32.6
35.7
36.8
June
33.1
33.1
July
27.3
27.3
August
28.0
28.0
28.1
September
28.7
31.0
25.5
28.8
October
29.6
29.6
November
29.0
26.0
31.0
29.1
December
28.6
26.0
29.0
Average
30.6
32.6
27.0
32.0
31.0
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2025
2024
2023
2022
January
12.2
24.3
22.0
10.5
12.5
February
12.8
21.6
10.8
13.9
March
19.0
25.3
31.0
17.1
19.5
April
22.9
22.0
23.8
May
24.3
23.0
25.0
25.3
June
24.5
24.5
July
22.7
22.6
August
22.6
24.0
22.6
September
22.5
24.0
25.0
22.3
October
19.7
19.6
November
14.4
24.0
31.0
13.5
December
15.1
21.5
14.5
Average
20.8
23.4
23.2
17.0
19.7
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2025
2024
2023
2022
January
0.1
0
0
0
0
February
0.0
0
0
0
March
0.4
0
0
1
0
April
0.5
0
1
May
4.7
11
1
1
June
8.8
9
July
70.2
70
August
46.0
33
46
September
26.3
40
0
26
October
7.5
8
November
0.0
0
0
0
December
0.0
0
0
Average
8.2
9.8
8.3
0.4
14.3
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
2025
2024
2023
2022
January
4.8
5
6
5
5
February
4.8
3
5
5
March
5.7
5
11
6
5
April
6.4
6
7
May
9.1
8
8
11
June
9.1
9
July
9.5
10
August
8.0
12
8
September
6.5
10
4
6
October
5.9
6
November
4.7
7
5
5
December
4.1
4
4
Average
6.5
7.3
5.8
5.8
7.0
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2025
2024
2023
2022
January
113°
120°
141°
108°
February
320°
114°
286°
March
051°
286°
240°
038°
April
287°
299°
May
291°
297°
275°
June
261°
July
260°
August
292°
253°
September
296°
108°
267°
October
046°
November
131°
116°
086°
December
135°
116°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.