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
87.5
88
February
75.0
75
60
100
March
100.0
100
100
April
70.0
67
May
100.0
100
June
100.0
100
100
100
July
100.0
100
100
August
100.0
100
September
100.0
100
October
98.2
98
100
November
100.0
100
0
December
85.1
85
0
Average
96.6
86.6
93.1
100.0
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
2022
2021
2020
January
29.4
29
February
28.1
31
24
31
March
26.9
27
29
April
24.6
25
May
28.0
28
June
25.2
25
24
28
July
24.3
26
22
August
25.0
25
September
27.7
28
October
27.0
27
27
November
25.0
25
22
December
26.3
27
20
Average
25.7
29.0
26.5
26.3
23.3
24.0
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
25.9
26
February
26.0
28
23
31
March
25.8
26
25
April
22.6
23
May
25.0
25
June
24.4
24
24
28
July
23.6
24
22
August
25.0
25
September
23.5
24
October
23.8
24
23
November
24.2
25
22
December
22.7
23
20
Average
24.0
26.4
23.7
23.3
23.3
24.0
Average lowest temperature per day
The minimum temperature is typically observed just before sunrise.
Precipitation (%)
Month
Average
2024
2023
2022
2021
2020
January
0.0
0
February
0.0
0
0
0
March
0.0
0
0
April
0.0
0
May
0.0
0
June
0.0
0
0
0
July
0.0
0
0
August
0.0
0
September
0.0
0
October
3.5
5
0
November
0.0
0
0
December
0.0
0
0
Average
0.2
1.3
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
4.5
5
February
4.9
5
4
10
March
6.0
6
6
April
8.4
9
May
3.5
4
June
7.1
9
4
4
July
4.7
5
3
August
2.0
2
September
4.4
4
October
4.7
5
4
November
3.1
3
0
December
5.0
5
0
Average
3.8
5.0
5.0
4.5
4.0
3.2
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
200°
February
061°
251°
288°
March
188°
302°
April
306°
May
180°
June
119°
201°
326°
July
246°
270°
August
360°
September
203°
October
163°
135°
November
151°
360°
December
093°
360°
Prevailing wind direction
Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.