30.12
tue
tue
Day
41°F
W 6 mph
Precip.
0%
0%
Night
30°F
E 4 mph
Precip.
0%
0%
31.12
wed
wed
Day
37°F
E 7 mph
Precip.
0%
0%
Night
37°F
E 15 mph
Precip.
0%
0%
01.01
thu
thu
Day
41°F
SE 16 mph
Precip.
64%
64%
Night
34°F
E 8 mph
Precip.
0%
0%
02.01
fri
fri
Day
34°F
SE 9 mph
Precip.
75%
75%
Night
25°F
E 6 mph
Precip.
0%
0%
03.01
sat
sat
Day
36°F
S 6 mph
Precip.
0%
0%
Night
27°F
SE 6 mph
Precip.
0%
0%
04.01
sun
sun
Day
32°F
S 11 mph
Precip.
0%
0%
Night
25°F
SE 4 mph
Precip.
0%
0%
05.01
mon
mon
Day
32°F
E 6 mph
Precip.
0%
0%
Night
27°F
NE 7 mph
Precip.
0%
0%
06.01
tue
tue
Day
41°F
NE 7 mph
Precip.
0%
0%
Night
46°F
NE 17 mph
Precip.
64%
64%
07.01
wed
wed
Day
48°F
NE 22 mph
Precip.
100%
100%
Night
39°F
NE 6 mph
Precip.
0%
0%
08.01
thu
thu
Day
37°F
E 8 mph
Precip.
72%
72%
Night
37°F
NE 8 mph
Precip.
0%
0%
09.01
fri
fri
Day
39°F
SW 6 mph
Precip.
72%
72%
Night
36°F
SW 11 mph
Precip.
0%
0%
10.01
sat
sat
Day
37°F
E 6 mph
Precip.
77%
77%
Night
30°F
S 5 mph
Precip.
0%
0%
11.01
sun
sun
Day
36°F
SE 6 mph
Precip.
0%
0%
Night
28°F
E 4 mph
Precip.
0%
0%
12.01
mon
mon
Day
34°F
NW 6 mph
Precip.
100%
100%
Night
30°F
SE 2 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 49.1°F. The highest and lowest sea temperatures during the month were 52.0°F and 46.9°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: 23:22
December 31, wednesday
0000
30°F
E
4 mph
4 mph
0300
30°F
E
5 mph
5 mph
0600
30°F
E
6 mph
6 mph
0900
30°F
E
6 mph
6 mph
1200
37°F
E
7 mph
7 mph
1500
37°F
E
8 mph
8 mph
1800
32°F
E
8 mph
8 mph
2100
36°F
E
11 mph
11 mph
