Northern Ireland weather live forecast

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

Monday
1st Sep
18

13

2

3
Tuesday
2nd Sep
17

11

4

3
Wednesday
3rd Sep
17

13

0

1
Thursday
4th Sep
17

11

6

3
Friday
5th Sep
17

11

1

3

5-day weather forecast updated at 04:01 on Monday 1st 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.

Top Northern Ireland destinations

Below are temperatures expected today at popular countries, regions and places in Northern Ireland. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

18
Belfast
17
Londonderry

All Northern Ireland destinations

Northern Ireland weather forecast by day

Below are the detailed weather forecasts for Northern Ireland for the next 5 days. The forecasts shown are for Belfast and may not represent the whole of Northern Ireland. Browse more destinations in Northern Ireland to view more weather forecasts.

Northern Ireland weather for Monday 1st September 2025

Expect mostly cloudy with light rain in Northern Ireland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 74% chance of some rain and a moderate breeze of 22 kph from the south-west.

18
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
3
UV index (Moderate)
74
% chance of some rain
<2
mm of rainfall expected
18
°C wind chill
22
kph wind from SW

Northern Ireland weather for Tuesday 2nd September 2025

Expect mostly cloudy with light rain in Northern Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 39% chance of some rain and a gentle breeze of 16 kph from the south-west.

17
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
3
UV index (Moderate)
39
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
16
kph wind from SW

Northern Ireland weather for Wednesday 3rd September 2025

Expect isolated thunderstorms in Northern Ireland with a maximum temperature of 17°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 90% chance of some rain and a gentle breeze of 18 kph from the west.

17
°C maximum temperature
13
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
1
UV index (Low)
90
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
18
kph wind from W

Northern Ireland weather for Thursday 4th September 2025

Expect sunshine and showers in 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 69% chance of some rain and a gentle breeze of 18 kph from the south-west.

17
°C maximum temperature
11
°C minimum temperature
sunshine and showers
6
hours of sunshine
3
UV index (Moderate)
69
% chance of some rain
<5
mm of rainfall expected
17
°C wind chill
18
kph wind from SW

Northern Ireland weather for Friday 5th September 2025

Expect broken clouds in Northern Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-west.