Portstewart weather live forecast

Tomorrow's maximum temperature in Portstewart is expected to be 16°C.

Sunday
15th Jun

16

10

2
Monday
16th Jun

21

14

3
Tuesday
17th Jun

19

10

8
Wednesday
18th Jun

17

9

5
Thursday
19th Jun

24

9

13

5-day weather forecast updated at 04:03 on Sunday 15th June 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 Sunday 15th June 2025

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the west.

16
°C maximum temperature
10
°C minimum temperature
broken clouds
2
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
16
°C wind chill
25
kph wind from W

Portstewart weather for Monday 16th June 2025

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 21°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 south-west.

21
°C maximum temperature
14
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
21
kph wind from SW

Portstewart weather for Tuesday 17th June 2025

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the south-west.

19
°C maximum temperature
10
°C minimum temperature
broken clouds
8
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
25
kph wind from SW

Portstewart weather for Wednesday 18th June 2025

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-west.

17
°C maximum temperature
9
°C minimum temperature
broken clouds
5
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
17
kph wind from SW

Portstewart weather for Thursday 19th June 2025

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 24°C, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the south-east.