Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 23°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Wednesday
8th Jul
23

15

3

5
Thursday
9th Jul
23

14

7

3
Friday
10th Jul
20

13

3

3
Saturday
11th Jul
22

13

6

5
Sunday
12th Jul
25

15

10

6

5-day weather forecast updated at 04:03 on Wednesday 8th 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 Wednesday 8th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

23
°C maximum temperature
15
°C minimum temperature
broken clouds
3
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
23
°C wind chill
14
kph wind from N

Portstewart weather for Thursday 9th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 23°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north.

23
°C maximum temperature
14
°C minimum temperature
broken clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
23
°C wind chill
13
kph wind from N

Portstewart weather for Friday 10th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north.

20
°C maximum temperature
13
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
21
kph wind from N

Portstewart weather for Saturday 11th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

22
°C maximum temperature
13
°C minimum temperature
broken clouds
6
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
14
kph wind from N

Portstewart weather for Sunday 12th July 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 25°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 12% chance of some rain and a gentle breeze of 13 kph from the north-east.