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
96.6
96
February
98.2
97
March
96.6
98
100
April
98.3
100
May
97.7
June
99.7
July
99.5
August
100.0
September
99.7
October
100.0
100
100
November
97.8
95
December
97.8
95
Average
98.2
97.1
96.2
100.0
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
2021
2020
January
19.1
22
February
19.1
21
March
21.3
24
27
April
24.6
26
May
28.3
June
30.7
July
31.8
August
32.0
September
29.8
October
28.7
30
27
November
24.3
28
December
21.8
24
Average
24.7
22.2
26.8
27.0
26.5
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
8.2
11
February
9.8
11
March
11.0
13
27
April
14.8
26
May
18.1
June
19.6
July
23.1
August
23.2
September
20.9
October
20.0
23
27
November
15.0
18
December
11.5
14
Average
17.8
11.4
17.7
27.0
26.5
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2021
2020
January
0.0
0
February
0.1
0
March
0.0
0
0
April
0.0
0
May
0.2
June
0.0
July
0.0
August
0.0
September
0.0
October
0.0
0
0
November
0.0
0
December
0.0
0
Average
0.0
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
2021
2020
January
6.0
7
February
5.3
6
March
6.5
7
2
April
6.0
13
May
6.1
June
5.6
July
5.6
August
5.8
September
5.2
October
5.2
5
6
November
4.6
5
December
4.7
5
Average
6.1
6.7
5.1
6.0
7.5
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
248°
February
273°
March
321°
180°
April
009°
May
June
July
August
September
October
326°
011°
November
302°
December
223°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.