28.12
sun
sun
Day
43°F
W 6 mph
Precip.
0%
0%
Night
32°F
SE 3 mph
Precip.
0%
0%
29.12
mon
mon
Day
39°F
S 2 mph
Precip.
0%
0%
Night
36°F
W 4 mph
Precip.
0%
0%
30.12
tue
tue
Day
41°F
SE 2 mph
Precip.
0%
0%
Night
30°F
E 6 mph
Precip.
0%
0%
31.12
wed
wed
Day
39°F
E 7 mph
Precip.
0%
0%
Night
37°F
E 6 mph
Precip.
69%
69%
01.01
thu
thu
Day
43°F
SE 11 mph
Precip.
63%
63%
Night
39°F
E 9 mph
Precip.
0%
0%
02.01
fri
fri
Day
43°F
NE 15 mph
Precip.
0%
0%
Night
45°F
SE 17 mph
Precip.
100%
100%
03.01
sat
sat
Day
46°F
SE 19 mph
Precip.
63%
63%
Night
39°F
E 7 mph
Precip.
0%
0%
04.01
sun
sun
Day
46°F
NE 14 mph
Precip.
100%
100%
Night
46°F
E 12 mph
Precip.
0%
0%
05.01
mon
mon
Day
52°F
NE 20 mph
Precip.
79%
79%
Night
46°F
E 23 mph
Precip.
0%
0%
06.01
tue
tue
Day
45°F
E 15 mph
Precip.
79%
79%
Night
37°F
E 14 mph
Precip.
0%
0%
07.01
wed
wed
Day
43°F
E 17 mph
Precip.
100%
100%
Night
39°F
E 14 mph
Precip.
89%
89%
08.01
thu
thu
Day
41°F
NE 12 mph
Precip.
100%
100%
Night
52°F
E 26 mph
Precip.
100%
100%
09.01
fri
fri
Day
45°F
SE 30 mph
Precip.
100%
100%
Night
39°F
SE 26 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 49.4°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: 01:36
December 28, sunday
0300
41°F
W
12 mph
12 mph
0600
39°F
W
8 mph
8 mph
0900
41°F
W
8 mph
8 mph
1200
43°F
W
6 mph
6 mph
1500
39°F
SW
4 mph
4 mph
1800
36°F
S
3 mph
3 mph
2100
34°F
S
3 mph
3 mph
December 29, monday
0000
32°F
SE
3 mph
3 mph
