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.

Thursday
9th Jul
23

12

5

4
Friday
10th Jul
19

14

3

4
Saturday
11th Jul
20

14

6

3
Sunday
12th Jul
25

14

7

3
Monday
13th Jul
24

14

17

6

5-day weather forecast updated at 04:03 on Thursday 9th 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 Thursday 9th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north.

23
°C maximum temperature
12
°C minimum temperature
broken clouds
5
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from N

Portstewart weather for Friday 10th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the north.

19
°C maximum temperature
14
°C minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
22
kph wind from N

Portstewart weather for Saturday 11th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north.

20
°C maximum temperature
14
°C minimum temperature
broken clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
20
kph wind from N

Portstewart weather for Sunday 12th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 25°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the east.

25
°C maximum temperature
14
°C minimum temperature
broken clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from E

Portstewart weather for Monday 13th July 2026

Expect clear skies in Portstewart, Northern Ireland with a maximum temperature of 24°C, maximum UV of 6 (High) and 17 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the east.