Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 22°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Tuesday
7th Jul
22

16

2

4
Wednesday
8th Jul
22

15

2

5
Thursday
9th Jul
25

14

7

3
Friday
10th Jul
21

12

1

4
Saturday
11th Jul
19

11

8

6

5-day weather forecast updated at 04:03 on Tuesday 7th 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 Tuesday 7th July 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 5% chance of some rain and a moderate breeze of 23 kph from the west.

22
°C maximum temperature
16
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
4
UV index (Moderate)
5
% chance of some rain
<2
mm of rainfall expected
22
°C wind chill
23
kph wind from W

Portstewart weather for Wednesday 8th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-west.

22
°C maximum temperature
15
°C minimum temperature
broken clouds
2
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
10
kph wind from SW

Portstewart weather for Thursday 9th 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 13 kph from the north.

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
13
kph wind from N

Portstewart weather for Friday 10th July 2026

Expect broken clouds 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 light breeze of 12 kph from the north.

21
°C maximum temperature
12
°C minimum temperature
broken clouds
1
hour of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
12
kph wind from N

Portstewart weather for Saturday 11th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north-west.