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
January
66.7
75
73
59
February
71.4
68
77
86
March
89.0
85
96
91
April
90.5
85
93
May
89.2
86
95
June
94.2
93
93
July
93.2
93
97
August
90.6
91
95
100
September
83.5
94
92
October
87.7
91
87
November
78.8
83
68
December
63.8
73
55
Average
84.2
76.7
87.5
87.6
100.0
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
January
5.9
6
7
7
February
9.3
11
9
10
March
12.4
12
11
13
April
13.7
13
14
May
19.2
18
20
June
23.9
25
22
July
24.6
24
26
August
24.2
23
27
17
September
19.3
24
20
October
17.5
18
18
November
10.5
11
11
December
6.7
9
3
Average
13.6
9.4
15.9
16.3
17.0
Average highest temperature per day
The maximum temperature is typically observed some hours after noon.