27.04
mon
mon
Day
55°F
SE 8 mph
Precip.
63%
63%
Night
43°F
S 4 mph
Precip.
0%
0%
28.04
tue
tue
Day
54°F
W 11 mph
Precip.
0%
0%
Night
43°F
W 6 mph
Precip.
0%
0%
29.04
wed
wed
Day
54°F
W 12 mph
Precip.
0%
0%
Night
46°F
W 16 mph
Precip.
0%
0%
30.04
thu
thu
Day
54°F
NW 19 mph
Precip.
0%
0%
Night
50°F
W 5 mph
Precip.
85%
85%
01.05
fri
fri
Day
54°F
N 7 mph
Precip.
84%
84%
Night
45°F
E 5 mph
Precip.
0%
0%
02.05
sat
sat
Day
55°F
SE 6 mph
Precip.
100%
100%
Night
45°F
SE 4 mph
Precip.
0%
0%
03.05
sun
sun
Day
54°F
E 5 mph
Precip.
43%
43%
Night
41°F
N 3 mph
Precip.
0%
0%
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 47.8°F. The highest and lowest sea temperatures during the month were 51.1°F and 46.2°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 54.0°F. The highest and lowest sea temperatures during the month were 57.2°F and 49.5°F.
Air temperature in Belfast, °F
Precipitation total in Belfast, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Belfast
Belfast on a weather map
Places in United Kingdom:
Name
°F
24 Hours Forecast
Belfast
Local time: 02:25
April 27, monday
0300
41°F
E
4 mph
4 mph
0600
41°F
E
5 mph
5 mph
0900
52°F
SE
6 mph
6 mph
1200
55°F
SE
8 mph
8 mph
1500
57°F
SE
9 mph
9 mph
1800
55°F
S
11 mph
11 mph
2100
45°F
SE
6 mph
6 mph
April 28, tuesday
0000
43°F
S
4 mph
4 mph
