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
2021
2020
January
32.2
25
50
50
February
52.3
33
0
50
March
78.5
80
0
100
April
72.3
92
100
0
May
68.9
100
67
June
65.5
65
July
58.2
64
0
August
45.5
49
September
63.4
69
October
58.3
73
100
0
November
68.4
77
89
December
40.0
16
78
Average
58.5
57.6
60.6
60.0
68.9
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
2021
2020
January
30.6
30
28
35
February
31.3
35
31
33
March
30.9
33
29
33
April
29.8
30
31
22
May
30.0
32
34
June
28.0
28
July
27.2
29
22
August
27.1
27
September
27.4
29
October
27.4
29
26
28
November
29.4
30
32
December
30.2
32
30
Average
29.5
31.6
28.7
29.9
30.4
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2024
2023
2021
2020
January
27.3
27
28
35
February
29.0
33
31
33
March
28.0
29
29
33
April
27.6
28
31
22
May
27.5
29
34
June
26.3
26
July
25.6
26
22
August
25.0
25
September
25.9
26
October
25.8
27
26
28
November
27.6
27
31
December
28.3
28
29
Average
27.9
28.6
26.4
29.9
29.9
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2021
2020
January
1.5
0
0
0
February
1.1
0
0
0
March
0.0
0
0
0
April
0.0
0
0
0
May
0.8
0
0
June
9.0
12
July
12.2
11
100
August
23.7
24
September
9.7
16
October
3.7
2
100
0
November
0.0
0
0
December
0.0
0
0
Average
4.6
11.3
10.0
3.4
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
2021
2020
January
3.8
4
6
4
February
5.0
6
0
5
March
5.4
6
8
8
April
4.8
5
9
0
May
5.5
5
6
June
4.9
4
July
4.7
5
11
August
4.3
5
September
4.1
4
October
3.2
4
2
5
November
4.1
4
4
December
3.7
4
6
Average
4.7
5.3
4.4
5.7
5.3
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2024
2023
2021
2020
January
291°
275°
116°
February
246°
360°
210°
March
211°
180°
225°
April
235°
183°
360°
May
273°
205°
June
238°
July
238°
209°
August
234°
September
250°
October
225°
360°
206°
November
280°
270°
December
272°
222°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.