Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 17°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Thursday
23rd Jul
17

13

6

3
Friday
24th Jul
21

12

1

5
Saturday
25th Jul
17

14

3

3
Sunday
26th Jul
17

13

4

2
Monday
27th Jul
19

12

1

2

5-day weather forecast updated at 04:03 on Thursday 23rd 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 23rd July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-west.

17
°C maximum temperature
13
°C minimum temperature
broken clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
17
°C wind chill
17
kph wind from NW

Portstewart weather for Friday 24th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the west.

21
°C maximum temperature
12
°C minimum temperature
broken clouds
1
hour of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
20
kph wind from W

Portstewart weather for Saturday 25th July 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 61% chance of some rain and a moderate breeze of 26 kph from the west.

17
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
3
UV index (Moderate)
61
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
26
kph wind from W

Portstewart weather for Sunday 26th July 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 57% chance of some rain and a fresh breeze of 29 kph from the west.

17
°C maximum temperature
13
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
2
UV index (Low)
57
% chance of some rain
<2
mm of rainfall expected
17
°C wind chill
29
kph wind from W

Portstewart weather for Monday 27th July 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 57% chance of some rain and a moderate breeze of 26 kph from the south-west.