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Monthly weather forecast in Belfast
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun
Sunday
Mon
Monday
Tue
Tuesday
Wed
Wednesday
Thu
Thursday
Fri
Friday
Sat
Saturday
18
+16
+14
18 August, sun
+16
+14
Feels like
+13
752 mmHg
81%
7.9
m/s
SW
+15
18 August, Sunday. day, 16°; night, 14°; rain
19
+16
+14
19 August, mon
+16
+14
Feels like
+13
753 mmHg
82%
7.8
m/s
S
+15
19 August, Monday. day, 16°; night, 14°; rain
20
+16
+14
20 August, tue
+16
+14
Feels like
+14
753 mmHg
82%
7.3
m/s
SW
+15
20 August, Tuesday. day, 16°; night, 14°; rain
21
+15
+14
21 August, wed
+15
+14
Feels like
+13
756 mmHg
85%
6
m/s
SW
+14
21 August, Wednesday. day, 15°; night, 14°; rain
22
+16
+14
22 August, thu
+16
+14
Feels like
+13
753 mmHg
83%
7.5
m/s
SW
+15
22 August, Thursday. day, 16°; night, 14°; rain
23
August
+16
+10
23 August, fri
+16
+10
Feels like
+9
744 mmHg
78%
7.5
m/s
SW
+15
Climate normal
+15
+13
23 August, Friday. day, 16°; night, 10°; light rain
24
+16
+10
24 August, sat
+16
+10
Feels like
+9
748 mmHg
75%
6.1
m/s
W
+15
Climate normal
+15
+13
24 August, Saturday. day, 16°; night, 10°; light rain
25
+14
+12
25 August, sun
+14
+12
Feels like
+8
750 mmHg
88%
8
m/s
SW
+15
Climate normal
+16
+14
25 August, Sunday. day, 14°; night, 12°; rain
26
+17
+15
26 August, mon
+17
+15
Feels like
+11
755 mmHg
83%
5
m/s
SW
+15
Climate normal
+16
+13
26 August, Monday. day, 17°; night, 15°; light rain
27
+17
+15
27 August, tue
+17
+15
Feels like
+12
752 mmHg
90%
7
m/s
S
+15
Climate normal
+15
+14
27 August, Tuesday. day, 17°; night, 15°; rain
28
+18
+14
28 August, wed
+18
+14
Feels like
+12
752 mmHg
86%
7.1
m/s
SE
+15
Climate normal
+15
+13
28 August, Wednesday. day, 18°; night, 14°; light rain
29
+17
+11
29 August, thu
+17
+11
Feels like
+13
753 mmHg
82%
5.3
m/s
S
+15
Climate normal
+16
+13
29 August, Thursday. day, 17°; night, 11°; rain
30
+18
+12
30 August, fri
+18
+12
Feels like
+12
757 mmHg
77%
4.8
m/s
W
+15
Climate normal
+15
+14
30 August, Friday. day, 18°; night, 12°; light rain
31
+18
+13
31 August, sat
+18
+13
Feels like
+14
759 mmHg
78%
4
m/s
S
+15
Climate normal
+15
+13
31 August, Saturday. day, 18°; night, 13°; light rain
1 September
+19
+13
1 September, sun
+19
+13
Feels like
+14
759 mmHg
79%
5.4
m/s
S
+15
Climate normal
+16
+13
1 September, Sunday. day, 19°; night, 13°; light rain
2
+20
+12
2 September, mon
+20
+12
Feels like
+15
757 mmHg
73%
4
m/s
S
Climate normal
+15
+14
2 September, Monday. day, 20°; night, 12°; partly cloudy
3
+20
+14
3 September, tue
+20
+14
Feels like
+14
757 mmHg
71%
4.5
m/s
SW
Climate normal
+16
+13
3 September, Tuesday. day, 20°; night, 14°; partly cloudy
4
+14
+13
4 September, wed
+14
+13
Feels like
+10
763 mmHg
84%
6.5
m/s
W
Climate normal
+15
+14
4 September, Wednesday. day, 14°; night, 13°; partly cloudy
5
+14
+14
5 September, thu
+14
+14
Feels like
+10
764 mmHg
89%
5.4
m/s
S
Climate normal
+14
+13
5 September, Thursday. day, 14°; night, 14°; light rain
6
+15
+14
6 September, fri
+15
+14
Feels like
+10
761 mmHg
91%
7
m/s
S
Climate normal
+15
+13
6 September, Friday. day, 15°; night, 14°; light rain
7
+14
+13
7 September, sat
+14
+13
Feels like
+12
761 mmHg
85%
3.4
m/s
SW
Climate normal
+15
+13
7 September, Saturday. day, 14°; night, 13°; mostly clear
8
+14
+11
8 September, sun
+14
+11
Feels like
+11
760 mmHg
85%
2.9
m/s
S
Climate normal
+15
+13
8 September, Sunday. day, 14°; night, 11°; light rain
9
+13
+11
9 September, mon
+13
+11
Feels like
+7
757 mmHg
82%
7.1
m/s
NW
Climate normal
+16
+14
9 September, Monday. day, 13°; night, 11°; mostly clear
10
+13
+11
10 September, tue
+13
+11
Feels like
+8
758 mmHg
82%
5.1
m/s
NW
Climate normal
+15
+13
10 September, Tuesday. day, 13°; night, 11°; clear
11
+13
+11
11 September, wed
+13
+11
Feels like
+10
759 mmHg
82%
3
m/s
SW
Climate normal
+15
+13
11 September, Wednesday. day, 13°; night, 11°; mostly clear
12
+13
+12
12 September, thu
+13
+12
Feels like
+7
756 mmHg
85%
7.2
m/s
E
Climate normal
+15
+12
12 September, Thursday. day, 13°; night, 12°; light rain
13
+12
+12
13 September, fri
+12
+12
Feels like
+4
756 mmHg
81%
10.8
m/s
NE
Climate normal
+14
+13
13 September, Friday. day, 12°; night, 12°; light rain
14
+12
+11
14 September, sat
+12
+11
Feels like
+6
760 mmHg
75%
6.2
m/s
N
Climate normal
+14
+13
14 September, Saturday. day, 12°; night, 11°; mostly clear
15
+13
+12
15 September, sun
+13
+12
Feels like
+9
763 mmHg
82%
3.8
m/s
W
Climate normal
+14
+12
15 September, Sunday. day, 13°; night, 12°; mostly clear
16
+13
+13
16 September, mon
+13
+13
Feels like
+8
760 mmHg
85%
7.1
m/s
W
Climate normal
+13
+12
16 September, Monday. day, 13°; night, 13°; light rain
17
+14
+12
17 September, tue
+14
+12
Feels like
+9
761 mmHg
82%
6
m/s
SW
Climate normal
+13
+11
17 September, Tuesday. day, 14°; night, 12°; mostly clear
18
+13
+12
18 September, wed
+13
+12
Feels like
+6
756 mmHg
85%
8
m/s
W
Climate normal
+14
+12
18 September, Wednesday. day, 13°; night, 12°; rain
19
+13
+11
19 September, thu
+13
+11
Feels like
+6
754 mmHg
89%
8.1
m/s
SW
Climate normal
+14
+12
19 September, Thursday. day, 13°; night, 11°; light rain
20
+14
+13
20 September, fri
+14
+13
Feels like
+4
751 mmHg
88%
11.1
m/s
S
Climate normal
+14
+13
20 September, Friday. day, 14°; night, 13°; rain
21
+13
+12
21 September, sat
+13
+12
Feels like
+3
748 mmHg
79%
14.1
m/s
W
Climate normal
+14
+13
21 September, Saturday. day, 13°; night, 12°; light rain
Average for 30 days
7
sunny days
20
days with precipitation
3
cloudy days
7 sunny days; 20 days with precipitation; 3 cloudy days;
82
%
air humidity
6.4
m/s
Wind
S
26
mm of precipitation
(3% of annual average)
+15
°C
Water temperature
air humidity 82%; 26 millimeters of precipitation (3% of annual average); Wind southerly 6.4 Meters per second; Water temperature +15°
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
SW
W
SW
SW
S
SE
S
W
S
S
S
SW
W
S
S
SW
S
NW
NW
SW
E
NE
N
W
W
SW
W
SW
S
W
23
Average data for 10 years
24
25
26
27
28
29
30
31
1
September
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Daytime temperature
Night-time temperature