Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 17°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Friday
22nd Aug
17

13

1

3
Saturday
23rd Aug
21

13

1

4
Sunday
24th Aug
23

15

3

4
Monday
25th Aug
24

14

12

4
Tuesday
26th Aug
21

11

3

4

5-day weather forecast updated at 04:04 on Friday 22nd August 2025 GMT

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

Portstewart weather forecast by day

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

Portstewart weather for Friday 22nd August 2025

Expect broken clouds in Portstewart, 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 light breeze of 10 kph from the north-west.

17
°C maximum temperature
13
°C minimum temperature
broken clouds
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from NW

Portstewart weather for Saturday 23rd August 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 13 kph from the south.

21
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
4
UV index (Moderate)
25
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
13
kph wind from S

Portstewart weather for Sunday 24th August 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 13% chance of some rain and a gentle breeze of 19 kph from the south.

23
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
4
UV index (Moderate)
13
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
19
kph wind from S

Portstewart weather for Monday 25th August 2025

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0-2 mm of rainfall expected with 36% chance of some rain and a fresh breeze of 35 kph from the south.

24
°C maximum temperature
14
°C minimum temperature
sunshine and showers
12
hours of sunshine
4
UV index (Moderate)
36
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
35
kph wind from S

Portstewart weather for Tuesday 26th August 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 85% chance of some rain and a moderate breeze of 26 kph from the south.