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
January
99.8
100
100
100
February
99.6
99
100
100
March
98.8
96
99
100
April
88.3
77
100
May
83.9
72
97
June
97.3
98
97
July
99.1
99
99
August
98.0
99
97
September
96.3
98
95
October
98.2
97
100
November
98.9
99
99
December
99.4
100
99
Average
97.0
98.4
94.3
98.3
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
January
29.6
30
30
29
February
30.4
31
31
29
March
33.1
35
33
32
April
33.7
34
33
May
33.0
34
32
June
30.6
33
29
July
31.1
32
30
August
31.2
32
31
September
30.9
32
30
October
29.5
30
29
November
29.0
29
30
December
28.2
28
29
Average
31.2
32.1
31.3
30.2
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
17.1
18
16
18
February
17.3
17
17
18
March
18.9
19
19
18
April
20.8
20
21
May
21.0
22
20
June
20.0
21
19
July
20.3
21
20
August
20.2
22
19
September
20.6
21
21
October
20.4
21
20
November
19.7
20
20
December
18.7
19
18
Average
19.0
17.9
19.8
19.3
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
January
1.2
0
1
2
February
1.5
0
1
3
March
0.8
0
1
1
April
1.3
0
2
May
2.8
1
4
June
3.9
2
6
July
2.3
2
3
August
2.9
3
3
September
4.5
3
6
October
6.2
6
7
November
4.6
5
4
December
0.3
0
1
Average
1.8
2.1
3.5
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
January
9.4
10
9
10
February
10.9
11
10
12
March
9.4
9
8
11
April
9.1
9
10
May
8.6
9
9
June
6.4
5
8
July
8.1
8
9
August
6.5
7
6
September
5.7
6
6
October
7.7
7
8
November
9.2
10
9
December
10.4
12
10
Average
8.9
10.1
8.0
8.7
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
350°
357°
352°
February
349°
357°
359°
March
337°
359°
356°
April
343°
360°
May
354°
001°
June
129°
006°
July
354°
354°
August
351°
357°
September
345°
075°
October
358°
355°
November
349°
356°
December
352°
358°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.