Measurements:
°C
°F
CURRENT WEATHER
15:58
Belfast
62°F
NE 9 mph
Feels like: 62°F
Precip: 65%
World Resorts United Kingdom Belfast Weather

7 Day Weather Forecast

08.19
wed
DAY
60°F
NE 11 mph
precip
22%
NIGHT
52°F
E 4 mph
precip
38%
08.20
thu
DAY
58°F
S 8 mph
precip
20%
NIGHT
48°F
SE 7 mph
precip
22%
08.21
fri
DAY
60°F
S 9 mph
precip
14%
NIGHT
44°F
E 5 mph
precip
21%
08.22
sat
DAY
62°F
SE 11 mph
precip
15%
NIGHT
50°F
SE 8 mph
precip
30%
08.23
sun
DAY
62°F
SE 6 mph
precip
21%
NIGHT
48°F
W 2 mph
precip
14%
08.24
mon
DAY
64°F
NW 9 mph
precip
3%
NIGHT
54°F
NW 7 mph
precip
27%
08.25
tue
DAY
64°F
NW 15 mph
precip
11%
NIGHT
62°F
NW 12 mph
precip
19%

Belfast Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Belfast was 16.5°F. The maximum and minimum values were 15.8°F and 17.2°F respectively.

Belfast on the Weather Map

Best Time to Visit Belfast
The most sunny months:
May 6 days
April 6 days
March 5 days
The most warm months:
July 64.9 °F
August 64.5 °F
June 62.2 °F
Warmest sea temperature:
August 58.7 °F
September 58.5 °F
July 57.7 °F
The most cold months:
January 43.0 °F
February 45.0 °F
December 45.1 °F
The most rainy months:
June 6 days
July 6 days
August 6 days
The most windy months:
February 13 mph
December 13 mph
January 12 mph
more details