24.12
wed
wed
Day
45°F
NW 9 mph
Precip.
0%
0%
Night
37°F
W 6 mph
Precip.
0%
0%
25.12
thu
thu
Day
41°F
W 13 mph
Precip.
0%
0%
Night
39°F
SW 9 mph
Precip.
0%
0%
26.12
fri
fri
Day
41°F
SW 5 mph
Precip.
0%
0%
Night
39°F
W 9 mph
Precip.
0%
0%
27.12
sat
sat
Day
46°F
W 14 mph
Precip.
0%
0%
Night
39°F
W 8 mph
Precip.
0%
0%
28.12
sun
sun
Day
41°F
SW 1 mph
Precip.
0%
0%
Night
32°F
E 4 mph
Precip.
0%
0%
29.12
mon
mon
Day
39°F
E 2 mph
Precip.
0%
0%
Night
36°F
S 5 mph
Precip.
0%
0%
30.12
tue
tue
Day
43°F
SE 4 mph
Precip.
0%
0%
Night
36°F
SE 6 mph
Precip.
0%
0%
31.12
wed
wed
Day
43°F
E 6 mph
Precip.
64%
64%
Night
37°F
SE 7 mph
Precip.
0%
0%
01.01
thu
thu
Day
45°F
SE 10 mph
Precip.
80%
80%
Night
43°F
SE 10 mph
Precip.
0%
0%
02.01
fri
fri
Day
46°F
E 15 mph
Precip.
0%
0%
Night
48°F
E 16 mph
Precip.
76%
76%
03.01
sat
sat
Day
48°F
SE 9 mph
Precip.
0%
0%
Night
37°F
NE 4 mph
Precip.
0%
0%
04.01
sun
sun
Day
48°F
NE 14 mph
Precip.
66%
66%
Night
43°F
NE 10 mph
Precip.
0%
0%
05.01
mon
mon
Day
46°F
N 14 mph
Precip.
0%
0%
Night
37°F
E 12 mph
Precip.
61%
61%
06.01
tue
tue
Day
37°F
E 14 mph
Precip.
64%
64%
Night
37°F
NE 9 mph
Precip.
64%
64%
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: 10:16
December 24, wednesday
1200
45°F
NW
9 mph
9 mph
1500
43°F
W
9 mph
9 mph
1800
39°F
W
6 mph
6 mph
2100
39°F
W
7 mph
7 mph
December 25, thursday
0000
37°F
W
6 mph
6 mph
0300
39°F
W
9 mph
9 mph
0600
37°F
W
11 mph
11 mph
0900
39°F
W
11 mph
11 mph
