Belfast weather live forecast

Today's maximum temperature in Belfast is expected to be 21°C. Select a day from the live weather forecast for Belfast, Northern Ireland, UK for more weather parameters.

Thursday
27th Aug
21

16

1

4
Friday
28th Aug
20

15

4

3
Saturday
29th Aug
18

14

5

2
Sunday
30th Aug
18

13

3

4
Monday
31st Aug
17

14

6

3

5-day weather forecast updated at 04:00 on Thursday 27th August 2026 GMT

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The 5-day weather forecast for Northern Ireland (Belfast) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Belfast weather forecast by day

Below are the detailed weather forecasts for Belfast for the next 5 days.

Belfast weather for Thursday 27th August 2026

Expect mostly cloudy with rain in Belfast, Northern Ireland with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 80% chance of some rain and a gentle breeze of 15 kph from the east.

21
°C maximum temperature
16
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
4
UV index (Moderate)
80
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
15
kph wind from E

Belfast weather for Friday 28th August 2026

Expect mostly cloudy with light rain in Belfast, Northern Ireland with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 29% chance of some rain and a gentle breeze of 16 kph from the north-west.

20
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
3
UV index (Moderate)
29
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
16
kph wind from NW

Belfast weather for Saturday 29th August 2026

Expect mostly cloudy with light rain in Belfast, Northern Ireland with a maximum temperature of 18°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 71% chance of some rain and a light breeze of 9 kph from the north-west.

18
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
2
UV index (Low)
71
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
9
kph wind from NW

Belfast weather for Sunday 30th August 2026

Expect isolated thunderstorms in Belfast, Northern Ireland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a light breeze of 11 kph from the south.

18
°C maximum temperature
13
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
4
UV index (Moderate)
78
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
11
kph wind from S

Belfast weather for Monday 31st August 2026

Expect sunshine and showers in Belfast, Northern Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 56% chance of some rain and a moderate breeze of 21 kph from the west.