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
8.1
7
25
February
45.4
46
March
64.8
66
0
April
100.0
100
May
93.3
93
June
70.5
71
July
50.0
50
August
95.6
96
September
50.0
56
0
October
20.0
19
25
November
13.3
0
22
December
0.0
0
0
Average
37.8
38.9
56.0
18.7
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
15.9
16
16
February
23.7
24
March
27.7
28
21
April
31.7
32
May
33.9
34
June
33.2
33
July
31.1
31
August
31.7
32
September
29.4
30
26
October
27.8
29
26
November
19.8
21
19
December
16.3
16
23
Average
24.4
22.6
27.0
23.6
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2022
January
9.7
9
14
February
12.5
13
March
21.0
21
20
April
29.2
29
May
30.2
30
June
31.3
31
July
30.8
31
August
29.7
30
September
28.0
28
26
October
24.7
24
26
November
15.6
16
15
December
12.6
13
15
Average
20.0
14.0
24.3
21.8
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
0.8
1
March
1.0
1
0
April
0.0
0
May
0.0
0
June
11.7
12
July
25.0
25
August
0.0
0
September
30.0
22
100
October
5.0
0
25
November
0.0
0
0
December
0.0
0
0
Average
8.0
0.6
4.6
18.7
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
3.2
3
3
February
4.8
5
March
4.5
5
1
April
5.0
5
May
6.1
6
June
5.5
6
July
3.2
3
August
6.6
7
September
3.5
3
6
October
3.2
3
4
November
2.3
2
3
December
2.5
2
6
Average
4.1
4.2
4.4
3.6
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2022
January
330°
318°
February
268°
March
283°
360°
April
274°
May
294°
June
316°
July
270°
August
238°
September
067°
059°
October
339°
116°
November
090°
306°
December
284°
300°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.