24.12
wed
wed
Day
45°F
W 9 mph
Precip.
0%
0%
Night
39°F
W 6 mph
Precip.
0%
0%
25.12
thu
thu
Day
43°F
W 12 mph
Precip.
0%
0%
Night
36°F
SW 6 mph
Precip.
0%
0%
26.12
fri
fri
Day
41°F
SW 4 mph
Precip.
0%
0%
Night
36°F
SW 6 mph
Precip.
0%
0%
27.12
sat
sat
Day
45°F
W 13 mph
Precip.
0%
0%
Night
39°F
W 7 mph
Precip.
0%
0%
28.12
sun
sun
Day
41°F
S 2 mph
Precip.
0%
0%
Night
30°F
E 5 mph
Precip.
0%
0%
29.12
mon
mon
Day
45°F
SE 7 mph
Precip.
0%
0%
Night
36°F
SE 6 mph
Precip.
0%
0%
30.12
tue
tue
Day
37°F
S 7 mph
Precip.
0%
0%
Night
34°F
E 7 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 49.6°F. The highest and lowest sea temperatures during the month were 52.0°F and 48.4°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 47.3°F. The highest and lowest sea temperatures during the month were 49.3°F and 45.9°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: 14:53
December 24, wednesday
1500
43°F
NW
9 mph
9 mph
1800
39°F
W
6 mph
6 mph
2100
39°F
W
7 mph
7 mph
December 25, thursday
0000
39°F
W
6 mph
6 mph
0300
41°F
W
7 mph
7 mph
0600
41°F
W
9 mph
9 mph
0900
41°F
W
9 mph
9 mph
1200
43°F
W
12 mph
12 mph
