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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Belfast, UKN
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September
Average Temperature
High
15°
Feels 14
Low
10°
Feels 8
Average Precipitation
13 Days
Rain amount
70.5mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
23°
22
20°
23
16°
24
18°
25
17°
26
18°
27
17°
28
17°
29
18°
30
18°
Forecast
Monday, September 21, 2026
Day
23°
Feels 23
Wind
15 km/h SW
Gust
23 km/h
Humidity
65%
P.O.P
30%
Night
15°
Feels 15
Wind
13 km/h SW
Gust
20 km/h
Humidity
92%
P.O.P
20%
Historical Averages
Sep 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.