|
DUBLIN AIRPORT
|
|
monthly and annual mean and extreme values
|
|
1961-1990
|
|
TEMPERATURE (degrees
Celsius) |
jan
|
feb
|
mar
|
apr
|
may
|
jun
|
jul
|
aug
|
sep
|
oct
|
nov
|
dec
|
year
|
|
mean daily max.
|
7.6
|
7.5
|
9.5
|
11.4
|
14.2
|
17.2
|
18.9
|
18.6
|
16.6
|
13.7
|
9.8
|
8.4
|
12.8
|
|
mean daily min.
|
2.5
|
2.5
|
3.1
|
4.4
|
6.8
|
9.6
|
11.4
|
11.1
|
9.6
|
7.6
|
4.2
|
3.4
|
6.4
|
|
mean
|
5.0
|
5.0
|
6.3
|
7.9
|
10.5
|
13.4
|
15.1
|
14.9
|
13.1
|
10.6
|
7.0
|
5.9
|
9.6
|
|
absolute max.
|
16.6
|
15.3
|
21.3
|
20.5
|
23.4
|
25.1
|
27.6
|
28.7
|
23.9
|
21.2
|
18.0
|
16.2
|
28.7
|
|
absolute min.
|
-9.4
|
-6.2
|
-6.7
|
-3.7
|
-1.0
|
1.5
|
4.8
|
4.1
|
1.7
|
-0.6
|
-3.4
|
-10.1
|
-10.1
|
|
mean no. of days with air frost
|
6.4
|
4.9
|
3.3
|
1.4
|
0.2
|
0.0
|
0.0
|
0.0
|
0.0
|
0.1
|
3.3
|
4.8
|
24.3
|
|
mean no. of days with ground frost
|
14.0
|
12.7
|
12.4
|
9.2
|
2.9
|
0.2
|
0.0
|
0.0
|
0.6
|
2.3
|
9.7
|
12.5
|
76.4
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RELATIVE HUMIDITY (%) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
mean at 0900UTC
|
86
|
84
|
82
|
79
|
76
|
76
|
78
|
81
|
82
|
85
|
86
|
86
|
82
|
|
mean at 1500UTC
|
79
|
75
|
70
|
68
|
67
|
68
|
68
|
70
|
70
|
75
|
78
|
81
|
72
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SUNSHINE (hours) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
mean daily duration
|
1.8
|
2.5
|
3.6
|
5.2
|
6.1
|
6.0
|
5.4
|
5.1
|
4.3
|
3.1
|
2.4
|
1.7
|
3.9
|
|
greatest daily duration
|
8.0
|
9.2
|
11.9
|
13.8
|
15.4
|
15.9
|
15.4
|
14.5
|
12.4
|
10.4
|
8.5
|
6.9
|
15.9
|
|
mean no. of days with no sun
|
11
|
8
|
5
|
3
|
2
|
2
|
1
|
2
|
3
|
6
|
8
|
11
|
61
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RAINFALL (mm) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
mean monthly total
|
69.5
|
50.4
|
53.5
|
51.1
|
54.8
|
55.8
|
50
|
71.1
|
66.4
|
70.1
|
64.3
|
75.8
|
732.8
|
|
greatest daily total
|
30.3
|
31.3
|
35.7
|
26.2
|
30.0
|
46.6
|
34.8
|
60.2
|
40.9
|
47.5
|
55.1
|
41.7
|
60.2
|
|
mean no. of days with >= 0.2mm
|
18
|
14
|
16
|
14
|
16
|
14
|
13
|
15
|
15
|
16
|
16
|
18
|
185
|
|
mean no. of days with >= 1.0mm
|
13
|
10
|
11
|
10
|
11
|
10
|
9
|
11
|
10
|
11
|
11
|
12
|
128
|
|
mean no. of days with >= 5.0mm
|
5
|
3
|
3
|
3
|
4
|
4
|
3
|
4
|
4
|
4
|
4
|
5
|
48
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
WIND (knots) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
mean monthly speed
|
12.2
|
11.7
|
11.6
|
9.7
|
8.7
|
8.0
|
8.1
|
8.0
|
8.9
|
9.9
|
10.8
|
11.8
|
9.9
|
|
max. gust
|
75
|
73
|
61
|
60
|
58
|
55
|
54
|
56
|
64
|
73
|
64
|
71
|
75
|
|
max. mean 10-minute speed
|
48
|
49
|
42
|
41
|
39
|
36
|
34
|
41
|
35
|
45
|
43
|
47
|
49
|
|
mean no. of days with gales
|
2.1
|
1.1
|
1.2
|
0.3
|
0.3
|
0.1
|
0.0
|
0.3
|
0.2
|
0.5
|
0.7
|
1.4
|
8.2
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
WEATHER (mean
no. of days with...) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
snow or sleet
|
6.0
|
5.5
|
4.3
|
1.7
|
0.3
|
0.0
|
0.0
|
0.0
|
0.0
|
0.1
|
0.9
|
2.9
|
21.6
|
|
snow lying at 0900UTC
|
2.1
|
1.2
|
0.4
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.0
|
0.1
|
0.6
|
4.5
|
|
hail
|
0.7
|
0.9
|
2.2
|
2.4
|
1.4
|
0.3
|
0.1
|
0.1
|
0.0
|
0.2
|
0.5
|
0.8
|
9.5
|
|
thunder
|
0.1
|
0.1
|
0.2
|
0.3
|
0.6
|
0.7
|
0.7
|
0.6
|
0.3
|
0.3
|
0.1
|
0.1
|
4.1
|
|
fog
|
4.8
|
4.3
|
3.9
|
4.5
|
3.6
|
3.1
|
3.6
|
5.3
|
4.9
|
4.7
|
4.0
|
3.9
|
50.5
|
