World Resorts United Kingdom Belfast Weather

Belfast 7 Days Forecast

17.05
sun
Day
52°F
NE 13 mph
Precip.
100%
Night
41°F
NE 5 mph
Precip.
83%
18.05
mon
Day
54°F
NW 6 mph
Precip.
72%
Night
46°F
NW 12 mph
Precip.
0%
19.05
tue
Day
52°F
NE 9 mph
Precip.
100%
Night
52°F
NE 11 mph
Precip.
89%
20.05
wed
Day
55°F
NE 17 mph
Precip.
84%
Night
55°F
NE 9 mph
Precip.
78%
21.05
thu
Day
64°F
NE 13 mph
Precip.
100%
Night
55°F
NE 5 mph
Precip.
100%
22.05
fri
Day
63°F
NW 11 mph
Precip.
100%
Night
57°F
NE 2 mph
Precip.
0%
23.05
sat
Day
66°F
SW 4 mph
Precip.
59%
Night
54°F
NE 3 mph
Precip.
0%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 52.9°F. The highest and lowest sea temperatures during the month were 53.4°F and 52.2°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

Sunniest months:
May 6 days
April 6 days
March 5 days
Warmest months:
July 63.3 °F
August 63.0 °F
June 61.0 °F
Warmest sea temp:
August 57.8 °F
September 57.7 °F
July 56.6 °F
Coldest months:
January 43.7 °F
February 45.5 °F
December 45.6 °F
Rainiest months:
July 7 days
June 6 days
August 6 days
Windiest months:
February 13.3 mph
December 13.1 mph
January 12.4 mph

Belfast on a weather map

Current weather
09:00
Belfast
+46°F
NE 12 mph
Feels like: +41°F
Precip.: 0%
Places in United Kingdom:
Name
°F
Bath
+50°F
Belfast
+46°F
Bournemouth
+52°F
Brighton
+52°F
Bristol
+50°F
Gibraltar
+57°F
Glasgow
+46°F
York
+52°F
Liverpool
+48°F
London
+52°F
Middlesbrough
+50°F
Plymouth
+50°F
Scarborough
+50°F
Torquay
+50°F
Edinburgh
+48°F
all places
24 Hours Forecast
Belfast
Local time: 09:00
May 17, sunday
1200
52°F
NE
13 mph
1500
50°F
NE
12 mph
1800
50°F
NE
10 mph
2100
43°F
NE
6 mph
May 18, monday
0000
41°F
NE
5 mph
0300
37°F
E
4 mph
0600
36°F
E
3 mph
0900
48°F
SE
1 mph
Units of measurement: °C / °F