Belfast weather live forecast

Today's maximum temperature in Belfast is expected to be 18°C. Select a day from the live weather forecast for Belfast, Northern Ireland, UK for more weather parameters.

Friday
5th Sep
18

12

3

4
Saturday
6th Sep
19

14

2

2
Sunday
7th Sep
18

13

4

3
Monday
8th Sep
17

12

2

3
Tuesday
9th Sep
16

12

1

2

5-day weather forecast updated at 04:01 on Friday 5th September 2025 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 Friday 5th September 2025

Expect broken clouds in Belfast, Northern Ireland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.

18
°C maximum temperature
12
°C minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from SW

Belfast weather for Saturday 6th September 2025

Expect mostly cloudy with light rain in Belfast, Northern Ireland with a maximum temperature of 19°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a moderate breeze of 23 kph from the south-east.

19
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
2
UV index (Low)
31
% chance of some rain
<2
mm of rainfall expected
19
°C wind chill
23
kph wind from SE

Belfast weather for Sunday 7th September 2025

Expect mostly cloudy with rain in Belfast, Northern Ireland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 96% chance of some rain and a moderate breeze of 27 kph from the south-east.

18
°C maximum temperature
13
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
3
UV index (Moderate)
96
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
27
kph wind from SE

Belfast weather for Monday 8th September 2025

Expect mostly cloudy with light rain in Belfast, Northern Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 66% chance of some rain and a fresh breeze of 29 kph from the south.

17
°C maximum temperature
12
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
3
UV index (Moderate)
66
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
29
kph wind from S

Belfast weather for Tuesday 9th September 2025

Expect mostly cloudy with light rain in Belfast, Northern Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 76% chance of some rain and a moderate breeze of 24 kph from the south.