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.

Monday
20th Jul
16

13

1

3
Tuesday
21st Jul
16

12

1

3
Wednesday
22nd Jul
18

12

2

2
Thursday
23rd Jul
20

12

2

5
Friday
24th Jul
21

11

1

4

5-day weather forecast updated at 04:03 on Monday 20th 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 Monday 20th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-west.

16
°C maximum temperature
13
°C minimum temperature
broken clouds
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
16
°C wind chill
20
kph wind from NW

Portstewart weather for Tuesday 21st July 2026

16
°C maximum temperature
12
°C minimum temperature
broken clouds
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
16
°C wind chill
24
kph wind from NW

Portstewart weather for Wednesday 22nd July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the north-west.

18
°C maximum temperature
12
°C minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
25
kph wind from NW

Portstewart weather for Thursday 23rd July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north-west.

20
°C maximum temperature
12
°C minimum temperature
broken clouds
2
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from NW

Portstewart weather for Friday 24th July 2026

Expect overcast skies in Portstewart, Northern Ireland with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.