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
January
97.3
97
February
97.0
97
100
March
94.5
96
93
April
96.6
97
May
96.0
96
June
97.6
98
July
99.0
99
August
97.5
98
September
98.0
98
October
98.6
99
November
86.1
86
December
88.6
89
Average
96.1
96.6
95.5
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
2024
2023
January
22.8
23
February
22.7
22
24
March
26.6
26
27
April
32.7
33
May
38.6
39
June
44.9
45
July
47.6
48
August
46.2
46
September
44.6
45
October
37.2
37
November
27.1
27
December
24.4
25
Average
30.3
23.8
36.8
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
January
10.9
11
February
11.5
11
13
March
14.9
15
15
April
19.0
19
May
25.8
26
June
31.8
32
July
31.6
32
August
32.1
32
September
28.3
28
October
23.1
23
November
16.3
16
December
11.5
12
Average
17.8
12.3
23.2
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
January
0.8
1
February
7.3
6
16
March
6.4
5
8
April
3.8
4
May
1.4
1
June
0.0
0
July
0.0
0
August
0.0
0
September
0.0
0
October
0.2
0
November
7.5
8
December
4.2
4
Average
3.2
3.9
2.4
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
January
8.6
9
February
8.2
8
9
March
8.9
10
8
April
8.8
9
May
10.0
10
June
13.3
13
July
10.3
10
August
9.3
9
September
8.8
9
October
7.0
7
November
7.4
7
December
6.5
7
Average
8.9
8.8
9.1
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
January
355°
February
359°
016°
March
026°
049°
April
013°
May
031°
June
347°
July
347°
August
014°
September
359°
October
016°
November
335°
December
347°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.