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
2025
2024
2023
2022
January
91.5
91
92
96
90
February
92.0
92
93
92
50
March
91.0
92
90
91
April
90.3
87
94
May
88.0
91
85
89
June
86.3
89
84
86
July
87.0
87
87
August
88.9
91
87
91
September
93.5
93
94
94
October
92.6
93
90
98
November
86.8
84
86
98
December
92.5
92
93
93
Average
90.8
91.1
89.2
90.1
93.0
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
2025
2024
2023
2022
January
31.1
30.8
31.5
30.6
31.3
February
31.3
31.3
32.1
30.8
27.5
March
31.7
31.8
32.0
31.3
April
32.4
32.0
32.7
May
32.2
32.2
32.0
32.6
June
31.5
31.1
31.8
31.5
July
31.5
31.6
31.3
August
32.3
32.8
32.3
31.3
September
33.1
33.6
34.2
31.1
October
33.9
34.1
35.7
31.1
November
32.6
32.5
33.5
31.5
December
32.0
31.6
32.7
30.5
Average
31.8
31.5
32.3
32.5
31.1
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.
Minimum temperatures (°C)
Month
Average
2025
2024
2023
2022
January
23.7
23.8
23.8
24.1
23.1
February
24.4
24.0
24.6
24.6
26.0
March
24.4
23.8
24.8
24.5
April
24.1
24.8
23.5
May
24.1
23.8
24.8
23.8
June
23.0
23.0
22.5
23.6
July
22.7
22.1
23.3
August
23.6
22.8
22.6
27.3
September
23.7
23.5
21.8
26.5
October
24.6
23.8
23.8
26.8
November
24.8
24.3
24.1
27.1
December
23.9
22.6
24.5
27.8
Average
24.2
23.7
23.7
23.6
25.9
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2025
2024
2023
2022
January
6.9
6
9
4
7
February
6.2
6
8
4
25
March
4.5
3
7
4
April
3.2
5
1
May
2.4
2
4
1
June
5.3
6
5
5
July
2.0
2
2
August
2.1
1
2
6
September
1.5
2
0
4
October
2.2
3
0
6
November
5.0
6
5
4
December
6.4
10
3
7
Average
4.4
4.4
5.1
2.3
5.7
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
2025
2024
2023
2022
January
4.2
4
4
5
5
February
4.1
4
4
4
5
March
4.2
4
4
5
April
3.6
3
4
May
4.1
3
5
4
June
4.2
4
4
5
July
4.9
5
5
August
5.6
6
6
6
September
5.7
6
6
5
October
5.7
5
7
4
November
4.3
4
5
5
December
3.7
3
4
4
Average
4.5
4.0
4.3
5.1
4.5
Average wind speed
Excluding wind gusts. Only observations between sunrise and sunset are taken into account.
Prevailing wind direction
Month
2025
2024
2023
2022
January
319°
295°
315°
301°
February
323°
321°
321°
270°
March
321°
319°
338°
April
073°
130°
May
102°
097°
103°
June
118°
094°
105°
July
108°
113°
August
112°
116°
109°
September
121°
117°
125°
October
137°
110°
166°
November
086°
121°
219°
December
318°
126°
232°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.