Portstewart weather live forecast

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

Friday
31st Jul
16

11

3

3
Saturday
1st Aug
19

10

7

4
Sunday
2nd Aug
18

9

6

4
Monday
3rd Aug
17

11

1

5
Tuesday
4th Aug
17

11

3

4

5-day weather forecast updated at 04:03 on Thursday 30th July 2026 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 31st July 2026

Expect mostly cloudy with light rain in Portstewart, 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 88% chance of some rain and a gentle breeze of 19 kph from the west.

16
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
3
UV index (Moderate)
88
% chance of some rain
<5
mm of rainfall expected
16
°C wind chill
19
kph wind from W

Portstewart weather for Saturday 1st August 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 29 kph from the west.

19
°C maximum temperature
10
°C minimum temperature
broken clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
29
kph wind from W

Portstewart weather for Sunday 2nd August 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-west.

18
°C maximum temperature
9
°C minimum temperature
broken clouds
6
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from SW

Portstewart weather for Monday 3rd August 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 45% chance of some rain and a light breeze of 12 kph from the north-east.

17
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
5
UV index (Moderate)
45
% chance of some rain
<5
mm of rainfall expected
17
°C wind chill
12
kph wind from NE

Portstewart weather for Tuesday 4th August 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 51% chance of some rain and a gentle breeze of 16 kph from the north.