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
100.0
100
100
100
February
99.2
100
100
98
100
March
100.0
100
100
100
April
99.0
97
100
May
96.2
100
91
97
June
96.8
93
98
100
95
July
99.0
98
100
99
August
99.0
96
100
100
September
95.0
81
100
100
October
97.9
94
100
98
November
97.7
91
100
100
December
100.0
100
100
100
Average
98.2
98.2
96.1
99.6
99.0
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
2025
2024
2023
2022
January
34.8
35.2
34.7
34.3
February
33.1
33.5
35.0
30.8
29.3
March
32.5
31.3
35.7
30.1
April
27.9
28.8
27.1
May
24.2
27.1
22.0
23.8
June
24.4
21.6
27.3
25.6
22.3
July
26.2
25.1
25.6
27.8
August
27.0
26.1
28.3
26.6
September
28.5
31.1
30.1
24.3
October
31.3
34.2
34.1
25.6
November
32.2
33.3
34.7
28.8
December
33.4
32.7
34.2
33.5
Average
29.1
29.7
30.4
29.7
26.8
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
24.8
25.1
25.8
23.3
February
25.6
26.1
26.8
22.8
29.3
March
24.9
24.0
27.0
23.6
April
21.7
24.1
19.8
May
18.1
20.1
16.3
17.8
June
16.7
15.0
19.5
16.3
15.5
July
16.5
14.0
16.8
18.6
August
17.5
16.3
19.6
16.3
September
19.4
20.3
21.8
16.3
October
21.5
23.3
23.1
18.3
November
23.3
23.8
27.8
18.8
December
25.9
25.3
26.3
25.8
Average
20.9
22.0
21.7
21.4
18.3
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2025
2024
2023
2022
January
0.5
0
1
0
February
0.7
0
0
2
0
March
1.1
2
0
2
April
0.0
0
0
May
3.1
4
0
5
June
1.3
4
2
0
0
July
0.0
0
0
0
August
0.4
0
1
0
September
0.0
0
0
0
October
0.0
0
0
0
November
1.1
0
1
2
December
1.7
4
1
0
Average
0.9
2.1
0.6
0.9
0.2
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
6.1
7
6
6
February
5.8
6
6
5
6
March
6.1
7
7
4
April
4.2
7
3
May
6.1
7
8
5
June
6.1
6
8
5
6
July
6.7
7
6
7
August
7.2
8
7
7
September
7.5
7
8
7
October
7.1
7
8
6
November
7.7
7
9
6
December
6.5
7
7
5
Average
6.5
6.5
7.0
6.2
6.5
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
135°
089°
055°
February
051°
058°
019°
116°
March
044°
051°
055°
April
071°
136°
May
093°
184°
102°
June
145°
057°
050°
174°
July
158°
088°
030°
August
103°
080°
051°
September
069°
026°
139°
October
131°
100°
151°
November
064°
073°
119°
December
135°
050°
001°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.