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
2021
2020
January
93.1
98
86
92
100
100
February
97.8
100
100
100
100
March
100.0
100
100
100
100
April
99.3
100
100
100
100
May
100.0
100
100
100
June
100.0
100
100
100
100
July
100.0
100
100
100
100
August
100.0
100
100
100
100
September
98.8
97
100
100
100
October
97.4
100
100
100
November
99.1
100
100
100
December
99.2
100
97
Average
98.9
99.1
98.6
97.7
98.6
100.0
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
2024
2023
2022
2021
2020
January
26.1
28
24
25
24
30
February
27.0
31
26
28
21
March
27.9
30
28
22
25
April
26.5
28
24
27
28
May
25.6
28
21
26
June
23.1
26
19
23
20
July
21.7
23
16
27
17
August
24.2
24
21
23
26
September
29.4
32
22
28
22
October
30.8
33
26
31
November
30.5
31
31
29
December
29.4
29
30
Average
26.4
29.5
27.7
22.6
27.8
25.2
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
2021
2020
January
23.0
24
21
23
24
28
February
23.1
26
21
25
20
March
24.2
26
24
21
24
April
21.2
19
23
24
28
May
19.5
17
19
26
June
16.7
17
13
23
20
July
15.0
14
12
27
17
August
19.3
18
18
22
26
September
23.9
24
21
26
20
October
27.7
28
26
31
November
27.3
28
31
29
December
26.1
25
26
Average
23.1
25.1
21.0
19.8
25.5
24.7
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
7.8
8
5
8
0
0
February
2.1
0
5
0
17
March
1.6
0
2
25
0
April
1.2
1
0
0
0
May
0.0
0
0
0
June
0.0
0
0
0
0
July
0.0
0
0
0
0
August
0.0
0
0
0
0
September
0.0
0
0
0
0
October
0.6
0
0
0
November
2.6
0
0
0
December
2.1
3
3
Average
1.7
3.2
1.0
3.3
1.3
2.2
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
2024
2023
2022
2021
2020
January
5.0
6
6
5
5
4
February
4.9
8
5
5
5
March
6.2
8
7
7
5
April
4.6
5
4
7
4
May
3.9
5
5
6
June
3.6
5
8
5
3
July
4.8
7
2
6
6
August
4.5
6
6
6
6
September
5.2
6
7
8
8
October
5.8
7
7
6
November
5.2
6
3
5
December
5.9
7
6
Average
5.5
7.3
6.1
5.7
6.5
5.0
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
2021
2020
January
061°
087°
054°
063°
059°
February
079°
090°
087°
083°
March
051°
080°
096°
100°
April
069°
086°
063°
080°
May
052°
075°
097°
June
069°
118°
126°
116°
July
087°
090°
059°
056°
August
080°
078°
069°
052°
September
065°
071°
074°
074°
October
046°
070°
076°
November
064°
060°
090°
December
062°
057°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.