Belfast weather live forecast

Today's maximum temperature in Belfast is expected to be 16°C. Select a day from the live weather forecast for Belfast, Northern Ireland, UK for more weather parameters.

Monday
15th Sep
16

13

2

2
Tuesday
16th Sep
16

12

3

3
Wednesday
17th Sep
18

12

3

3
Thursday
18th Sep
17

12

2

3
Friday
19th Sep
18

12

3

3

5-day weather forecast updated at 04:01 on Monday 15th 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 Monday 15th September 2025

Expect mostly cloudy with rain in Belfast, Northern Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 86% chance of some rain and a fresh breeze of 29 kph from the west.

16
°C maximum temperature
13
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
2
UV index (Low)
86
% chance of some rain
<20
mm of rainfall expected
16
°C wind chill
29
kph wind from W

Belfast weather for Tuesday 16th September 2025

Expect mostly cloudy with light rain in Belfast, Northern Ireland with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a moderate breeze of 27 kph from the west.

16
°C maximum temperature
12
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
3
UV index (Moderate)
52
% chance of some rain
<5
mm of rainfall expected
16
°C wind chill
27
kph wind from W

Belfast weather for Wednesday 17th September 2025

Expect mostly cloudy with rain in Belfast, Northern Ireland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 57% chance of some rain and a fresh breeze of 29 kph from the south-west.

18
°C maximum temperature
12
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
3
UV index (Moderate)
57
% chance of some rain
<10
mm of rainfall expected
18
°C wind chill
29
kph wind from SW

Belfast weather for Thursday 18th 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 34% chance of some rain and a moderate breeze of 23 kph from the south-west.

17
°C maximum temperature
12
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
3
UV index (Moderate)
34
% chance of some rain
<2
mm of rainfall expected
17
°C wind chill
23
kph wind from SW

Belfast weather for Friday 19th September 2025

Expect mostly cloudy with light rain in Belfast, Northern Ireland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 42% chance of some rain and a gentle breeze of 16 kph from the west.