30 Year Averages
Please choose a 30 year average report from any station by clicking on the map or one of the links below:
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 |
94.8 |
69.9 |
67.8 |
55.7 |
55.8 |
50.6 |
50.7 |
68.7 |
73.3 |
94.9 |
97.1 |
97.8 |
877.1 |
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 |
|