The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Belfast County Borough, Belfast, UKN
Content continues below
May
Average Temperature
High
14°
Feels 13
Low
6°
Feels 4
Average Precipitation
13 Days
Rain amount
63.9mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 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
18°
21
19°
22
19°
23
19°
24
21°
25
22°
26
21°
27
20°
28
19°
29
17°
30
15°
31
15°
Forecast
Wednesday, May 20, 2026
Day
18°
Feels 18
Wind
21 km/h SW
Gust
32 km/h
Humidity
49%
P.O.P
60%
Rain
~1 mm
Night
11°
Feels 10
Wind
17 km/h S
Gust
26 km/h
Humidity
97%
P.O.P
90%
Rain
1-3 mm
Historical Averages
May 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.