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
96.7
97
98
96
100
100
February
99.3
100
100
100
100
92
March
99.3
100
100
95
100
100
April
99.6
100
100
100
93
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
100.0
100
100
100
100
October
100.0
100
100
100
100
November
99.7
100
100
96
December
98.2
92
100
100
Average
99.2
98.7
99.4
99.5
99.4
97.0
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
28.5
29
27
27
24
31
February
29.7
33
30
30
29
28
March
29.3
32
30
27
27
29
April
28.8
30
26
28
30
May
26.9
29
24
25
June
24.8
25
24
23
26
July
24.3
26
23
21
21
August
27.3
28
28
26
27
September
31.1
33
29
31
30
October
34.7
36
36
33
33
November
33.0
36
32
32
December
31.6
31
32
33
Average
29.2
30.9
30.3
26.8
29.6
28.6
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
25.8
25
24
25
24
29
February
26.3
26
27
27
29
27
March
25.8
26
26
25
27
28
April
23.5
22
23
27
26
May
20.0
18
18
25
June
18.8
19
17
21
26
July
17.8
16
18
20
20
August
22.2
18
21
25
27
September
26.3
25
24
29
30
October
29.3
30
35
29
33
November
28.4
28
27
30
December
27.8
27
27
29
Average
25.1
25.5
23.2
21.9
27.6
27.1
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
8.0
4
12
5
0
7
February
4.1
0
4
0
0
12
March
3.3
0
2
5
0
0
April
2.0
1
0
0
0
May
0.0
0
0
0
June
0.3
0
1
0
0
July
0.0
0
0
0
0
August
0.0
0
0
0
0
September
0.0
0
0
0
0
October
1.0
0
0
3
0
November
3.6
0
0
4
December
4.7
10
0
2
Average
2.2
1.6
1.4
0.7
1.5
5.0
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
2.5
4
1
1
0
2
February
2.6
5
3
2
4
2
March
2.9
5
4
2
4
2
April
3.1
6
2
5
3
May
3.3
5
3
10
June
3.2
5
4
4
3
July
4.1
6
5
4
2
August
5.1
6
6
6
8
September
5.5
7
7
8
7
October
4.3
6
11
7
5
November
4.1
6
5
6
December
3.5
7
4
5
Average
3.7
4.3
5.5
4.1
5.7
2.6
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
090°
344°
252°
360°
312°
February
167°
231°
246°
219°
343°
March
229°
292°
258°
082°
206°
April
248°
026°
045°
322°
May
255°
252°
251°
June
242°
233°
236°
270°
July
244°
235°
201°
164°
August
238°
239°
246°
278°
September
245°
198°
047°
090°
October
360°
096°
232°
135°
November
221°
116°
329°
December
082°
241°
092°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.