|
ROSSLARE
|
|
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.
|
8.2 |
7.9 |
9.3 |
10.9 |
13.2 |
15.9 |
17.9 |
17.9 |
16.3 |
13.8 |
10.6 |
9.1 |
12.6
|
|
mean daily min.
|
3.9 |
3.8 |
4.3 |
5.6 |
7.9 |
10.4 |
12.1 |
12.2 |
10.8 |
9.0 |
5.9 |
4.8 |
7.6
|
|
mean
|
6.1 |
5.9 |
6.8 |
8.3 |
10.5 |
13.2 |
15.0 |
15.0 |
13.6 |
11.4 |
8.2 |
7.0 |
10.1
|
|
absolute max.
|
12.7 |
13.0 |
14.2 |
20.1 |
20.3 |
25.4 |
26.2 |
25.9 |
21.5 |
19.2 |
15.7 |
14.0 |
26.2
|
|
absolute min.
|
-4.4 |
-4.1 |
-2.5 |
-1.0 |
-0.3 |
4.7 |
5.2 |
6.2 |
2.6 |
0.7 |
-2.5 |
-3.1 |
-4.4
|
|
mean no. of days with air frost
|
2.4 |
2.0 |
1.1 |
0.3 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.6 |
1.6 |
8.0
|
|
mean no. of days with ground frost
|
11.0 |
8.6 |
7.2 |
4.4 |
1.3 |
0.0 |
0.0 |
0.0 |
0.1 |
0.8 |
5.6 |
8.5 |
47.4
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RELATIVE HUMIDITY (%) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
mean at 0900UTC
|
86 |
85 |
84 |
82 |
81 |
82 |
82 |
84 |
84 |
86 |
85 |
86 |
84
|
|
mean at 1500UTC
|
81 |
79 |
76 |
76 |
77 |
78 |
77 |
78 |
77 |
80 |
79 |
82 |
78
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SUNSHINE (hours) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
mean daily duration
|
1.94 |
2.47 |
3.87 |
5.74 |
6.88 |
6.59 |
6.29 |
5.86 |
4.79 |
3.27 |
2.50 |
1.75 |
4.33
|
|
greatest daily duration
|
8.2 |
9.8 |
11.8 |
13.4 |
15.4 |
15.8 |
15.9 |
14.0 |
12.8 |
10.2 |
8.6 |
7.3 |
15.9
|
|
mean no. of days with no sun
|
11 |
8 |
5 |
3 |
1 |
2 |
1 |
2 |
3 |
6 |
9 |
11 |
61
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RAINFALL (mm) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
mean monthly total
|
94.9 |
69.6 |
67.2 |
55.9 |
55.4 |
50.7 |
50.6 |
70.9 |
71.9 |
94.9 |
97.6 |
97.6 |
877.2
|
|
greatest daily total
|
44.9 |
33.4 |
48.9 |
27.9 |
31.0 |
32.6 |
79.1 |
61.0 |
63.6 |
54.8 |
56.7 |
44.8 |
79.1
|
|
mean no. of days with >= 0.2mm
|
18 |
15 |
16 |
14 |
14 |
13 |
11 |
13 |
14 |
16 |
16 |
17 |
176
|
|
mean no. of days with >= 1.0mm
|
14 |
11 |
12 |
10 |
10 |
8 |
8 |
9 |
10 |
12 |
13 |
13 |
129
|
|
mean no. of days with >= 5.0mm
|
7 |
5 |
5 |
4 |
4 |
3 |
3 |
4 |
5 |
6 |
6 |
7 |
59
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
WIND (knots) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
mean monthly speed
|
12.9 |
12.8 |
12.4 |
11.8 |
11.4 |
10.1 |
9.5 |
10.0 |
10.7 |
11.6 |
12.1 |
12.8 |
11.5
|
|
max. gust
|
76 |
76 |
66 |
75 |
57 |
51 |
50 |
56 |
72 |
87 |
71 |
80 |
87
|
|
max. mean 10-minute speed
|
46 |
44 |
42 |
52 |
35 |
38 |
35 |
37 |
47 |
50 |
45 |
50 |
52
|
|
mean no. of days with gales
|
2.5 |
1.5 |
1.1 |
1.3 |
0.3 |
0.2 |
0.1 |
0.2 |
0.5 |
0.9 |
1.3 |
1.9 |
11.7
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
WEATHER (mean no. of days with...) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
snow or sleet
|
2.7 |
3.7 |
1.9 |
0.8 |
0.1 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.2 |
1.3 |
10.7
|
|
snow lying at 0900UTC
|
0.8 |
0.7 |
0.2 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.1 |
1.8
|
|
hail
|
1.8 |
1.1 |
2.5 |
2.1 |
1.0 |
0.3 |
0.0 |
0.0 |
0.1 |
0.4 |
1.2 |
1.2 |
11.8
|
|
thunder
|
0.4 |
0.2 |
0.1 |
0.4 |
0.8 |
1.0 |
1.0 |
0.7 |
0.6 |
0.5 |
0.7 |
0.3 |
6.7
|
|
fog
|
2.0 |
2.2 |
3.2 |
4.2 |
3.2 |
4.4 |
5.0 |
4.6 |
3.9 |
2.5 |
1.7 |
1.6 |
38.5
|
