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
59.2
62
13
February
58.7
59
0
March
74.4
74
75
April
83.3
83
May
82.7
83
June
68.1
68
July
100.0
100
August
96.1
96
September
81.8
80
100
October
64.0
65
60
November
65.0
55
78
December
37.0
32
100
Average
70.5
65.2
68.5
77.7
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
21.4
22
18
February
22.3
23
17
March
25.6
26
21
April
26.1
26
May
26.9
27
June
28.3
28
July
30.2
30
August
29.5
30
September
29.8
30
31
October
26.2
26
26
November
23.5
24
23
December
19.5
19
25
Average
24.9
23.7
25.3
25.6
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
12.4
11
16
February
14.1
14
17
March
19.0
19
21
April
24.1
24
May
25.1
25
June
27.4
28
July
29.5
30
August
28.5
29
September
28.5
28
31
October
25.0
24
26
November
20.6
21
20
December
15.6
15
21
Average
20.7
14.7
23.5
23.9
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
8.7
9
0
March
15.1
15
25
April
0.0
0
May
20.6
21
June
50.0
50
July
50.0
50
August
65.3
65
September
40.9
35
100
October
12.0
10
20
November
0.0
0
0
December
11.1
12
0
Average
17.5
7.8
28.0
16.6
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
2.6
3
2
February
3.6
4
6
March
4.1
4
2
April
5.0
5
May
4.9
5
June
3.8
4
July
4.0
4
August
5.1
5
September
2.7
3
4
October
3.6
3
4
November
2.6
2
3
December
2.1
2
3
Average
3.5
3.5
3.6
3.5
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
029°
360°
February
029°
053°
March
025°
045°
April
013°
May
038°
June
306°
July
237°
August
198°
September
022°
213°
October
042°
032°
November
021°
064°
December
054°
090°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.