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.

Thursday
31st Jul
17

13

4

4
Friday
1st Aug
16

12

6

5
Saturday
2nd Aug
20

11

0

4
Sunday
3rd Aug
18

12

8

4
Monday
4th Aug
16

12

4

1

5-day weather forecast updated at 04:04 on Thursday 31st July 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 Thursday 31st July 2025

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the north-west.

17
°C maximum temperature
13
°C minimum temperature
broken clouds
4
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
17
°C wind chill
27
kph wind from NW

Portstewart weather for Friday 1st August 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 15% chance of some rain and a moderate breeze of 23 kph from the north-west.

16
°C maximum temperature
12
°C minimum temperature
mostly cloudy with light rain
6
hours of sunshine
5
UV index (Moderate)
15
% chance of some rain
<2
mm of rainfall expected
16
°C wind chill
23
kph wind from NW

Portstewart weather for Saturday 2nd August 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a gentle breeze of 13 kph from the south-west.

20
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
4
UV index (Moderate)
62
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
13
kph wind from SW

Portstewart weather for Sunday 3rd August 2025

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 50% chance of some rain and a moderate breeze of 27 kph from the west.

18
°C maximum temperature
12
°C minimum temperature
sunshine and showers
8
hours of sunshine
4
UV index (Moderate)
50
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
27
kph wind from W

Portstewart weather for Monday 4th August 2025

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 89% chance of some rain and a strong breeze of 42 kph from the west.