BELMULLET |
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 |
8.3 |
9.7 |
11.6 |
13.7 |
15.7 |
16.8 |
17.2 |
15.7 |
13.4 |
10.3 |
9.0 |
12.5 |
mean
daily min. |
3.1 |
2.9 |
3.9 |
4.9 |
7.0 |
9.5 |
11.1 |
11.1 |
9.8 |
8.2 |
5.1 |
4.3 |
6.7 |
mean |
5.7 |
5.6 |
6.8 |
8.2 |
10.3 |
12.6 |
14.0 |
14.1 |
12.8 |
10.8 |
7.7 |
6.6 |
9.6 |
absolute
max. |
13.0 |
13.8 |
19.4 |
23.3 |
26.0 |
27.0 |
28.7 |
27.4 |
22.4 |
22.1 |
15.2 |
13.5 |
28.7 |
absolute
min. |
-8.1 |
-6.3 |
-5.7 |
-2.6 |
-0.4 |
1.4 |
5.1 |
3.1 |
0.8 |
-0.7 |
-2.5 |
-5.2 |
-8.1 |
mean
no. of days with air frost |
5.0 |
4.3 |
2.1 |
0.9 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.1 |
1.3 |
3.1 |
16.7 |
mean
no. of days with ground frost |
10.5 |
9.5 |
7.3 |
5.4 |
1.9 |
0.1 |
0.0 |
0.0 |
0.5 |
1.7 |
5.5 |
7.8 |
50.3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RELATIVE HUMIDITY (%) |
|
|
|
|
|
|
|
|
|
|
|
|
|
mean
at 0900UTC |
85 |
84 |
82 |
80 |
78 |
81 |
85 |
85 |
84 |
85 |
85 |
85 |
83 |
mean
at 1500UTC |
81 |
77 |
75 |
73 |
73 |
77 |
80 |
79 |
78 |
80 |
80 |
83 |
78 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SUNSHINE (hours) |
|
|
|
|
|
|
|
|
|
|
|
|
|
mean
daily duration |
1.47 |
2.41 |
3.29 |
5.27 |
6.14 |
5.36 |
4.29 |
4.63 |
3.65 |
2.63 |
1.74 |
1.08 |
3.50 |
greatest
daily duration |
7.9 |
9.8 |
11.2 |
14.0 |
15.6 |
15.8 |
15.4 |
14.0 |
12.5 |
9.8 |
8.1 |
6.7 |
15.8 |
mean
no. of days with no sun |
10 |
6 |
5 |
3 |
2 |
3 |
3 |
3 |
4 |
6 |
8 |
12 |
66 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
RAINFALL (mm) |
|
|
|
|
|
|
|
|
|
|
|
|
|
mean
monthly total |
123.7 |
80.4 |
96.3 |
56.9 |
67.9 |
67.2 |
67.5 |
93.5 |
108.6 |
133.8 |
127.4 |
119.3 |
1142.5 |
greatest
daily total |
32.2 |
23.6 |
25.9 |
20.4 |
26.5 |
35.2 |
44.9 |
57.3 |
56.1 |
67.8 |
56.4 |
40.5 |
67.8 |
mean
no. of days with >= 0.2mm |
23 |
19 |
23 |
19 |
18 |
18 |
19 |
20 |
21 |
24 |
23 |
24 |
249 |
mean
no. of days with >= 1.0mm |
20 |
15 |
18 |
13 |
14 |
12 |
12 |
15 |
16 |
19 |
19 |
19 |
193 |
mean
no. of days with >= 5.0mm |
9 |
6 |
7 |
4 |
5 |
4 |
4 |
6 |
7 |
9 |
9 |
9 |
80 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
WIND (knots) |
|
|
|
|
|
|
|
|
|
|
|
|
|
mean
monthly speed |
14.7 |
13.9 |
14.2 |
12.2 |
12.4 |
11.9 |
11.6 |
11.3 |
13.0 |
14.3 |
13.6 |
14.3 |
13.1 |
max.
gust |
91 |
93 |
88 |
67 |
69 |
73 |
67 |
60 |
84 |
85 |
76 |
89 |
93 |
max.
mean 10-minute speed |
58 |
61 |
58 |
43 |
47 |
47 |
45 |
44 |
57 |
58 |
50 |
60 |
61 |
mean
no. of days with gales |
5.5 |
4.2 |
3.3 |
1.1 |
1.0 |
0.4 |
0.3 |
0.8 |
2.3 |
3.6 |
3.4 |
4.5 |
30.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
WEATHER (mean
no. of days with..) |
|
|
|
|
|
|
|
|
|
|
|
|
|
snow
or sleet |
4.6 |
4.4 |
4.0 |
1.6 |
0.2 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.7 |
2.6 |
18.1 |
snow
lying at 0900UTC |
0.8 |
0.6 |
0.3 |
0.1 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.4 |
2.3 |
hail |
8.5 |
6.2 |
7.4 |
4.0 |
1.9 |
0.2 |
0.1 |
0.1 |
0.5 |
2.8 |
6.7 |
6.7 |
45.1 |
thunder |
0.9 |
0.6 |
0.5 |
0.3 |
0.4 |
0.5 |
0.6 |
0.2 |
0.2 |
0.2 |
0.4 |
0.6 |
5.5 |
fog |
1.1 |
0.6 |
0.7 |
1.7 |
1.3 |
2.0 |
3.3 |
2.4 |
1.1 |
1.2 |
0.6 |
0.6 |
16.6 |
