Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 14°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Wednesday
10th Jun
14

8

6

4
Thursday
11th Jun
16

10

1

2
Friday
12th Jun
18

10

5

5
Saturday
13th Jun
17

10

2

5
Sunday
14th Jun
21

12

5

6

5-day weather forecast updated at 04:03 on Wednesday 10th June 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 10th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 84% chance of some rain and a gentle breeze of 19 kph from the west.

14
°C maximum temperature
8
°C minimum temperature
mostly cloudy with light rain
6
hours of sunshine
4
UV index (Moderate)
84
% chance of some rain
<5
mm of rainfall expected
14
°C wind chill
19
kph wind from W

Portstewart weather for Thursday 11th June 2026

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 70% chance of some rain and a moderate breeze of 25 kph from the west.

16
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
2
UV index (Low)
70
% chance of some rain
<10
mm of rainfall expected
16
°C wind chill
25
kph wind from W

Portstewart weather for Friday 12th June 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 34 kph from the west.

18
°C maximum temperature
10
°C minimum temperature
broken clouds
5
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
34
kph wind from W

Portstewart weather for Saturday 13th June 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.

17
°C maximum temperature
10
°C minimum temperature
broken clouds
2
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from W

Portstewart weather for Sunday 14th June 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 21°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north-west.