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
100.0
100
100
February
100.0
100
100
March
100.0
100
100
April
88.5
89
May
79.3
79
June
86.0
91
77
July
94.8
97
93
August
91.8
100
84
September
94.5
89
100
October
89.8
91
89
November
98.5
98
100
December
97.5
99
94
Average
95.0
100.0
93.8
91.4
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
29.9
32
27
February
28.8
29
28
March
29.6
33
27
April
23.7
24
May
22.1
22
June
20.9
22
20
July
20.9
20
22
August
21.7
23
21
September
22.2
25
20
October
23.5
26
21
November
24.8
28
20
December
29.9
31
27
Average
25.8
31.8
24.7
21.1
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
23.9
25
22
February
26.7
26
28
March
24.4
26
23
April
18.3
18
May
17.4
17
June
15.4
16
14
July
17.8
17
18
August
17.1
19
16
September
17.7
20
16
October
18.3
20
17
November
20.3
24
16
December
23.6
24
22
Average
20.6
25.1
19.9
16.7
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
January
0.0
0
0
February
0.0
0
0
March
0.0
0
0
April
2.8
3
May
3.4
3
June
0.0
0
0
July
0.0
0
0
August
0.0
0
0
September
7.2
11
4
October
2.8
2
4
November
4.2
7
0
December
0.0
0
0
Average
1.1
2.4
1.1
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
2.9
3
3
February
2.6
1
5
March
3.4
4
3
April
2.7
3
May
2.5
3
June
4.1
4
5
July
4.8
5
5
August
4.6
5
4
September
4.3
5
4
October
4.2
4
4
November
2.8
3
2
December
2.7
3
2
Average
3.5
3.1
3.6
3.7
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
060°
116°
February
090°
050°
March
041°
051°
April
136°
May
043°
June
060°
071°
July
046°
055°
August
055°
086°
September
041°
113°
October
126°
123°
November
071°
138°
December
068°
060°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.