Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 11°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Saturday
9th May
11

6

13

4
Sunday
10th May
12

4

8

4
Monday
11th May
13

8

3

4
Tuesday
12th May
14

7

6

4
Wednesday
13th May
12

6

3

4

5-day weather forecast updated at 04:03 on Saturday 9th May 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 Saturday 9th May 2026

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 11°C, maximum UV of 4 (Moderate) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 30 kph from the north.

11
°C maximum temperature
6
°C minimum temperature
scattered clouds
13
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
30
kph wind from N

Portstewart weather for Sunday 10th May 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the north-west.

12
°C maximum temperature
4
°C minimum temperature
broken clouds
8
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
12
°C wind chill
27
kph wind from NW

Portstewart weather for Monday 11th May 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the north-west.

13
°C maximum temperature
8
°C minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
25
kph wind from NW

Portstewart weather for Tuesday 12th May 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 0-2 mm of rainfall expected with 38% chance of some rain and a moderate breeze of 25 kph from the west.

14
°C maximum temperature
7
°C minimum temperature
mostly cloudy with light rain
6
hours of sunshine
4
UV index (Moderate)
38
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
25
kph wind from W

Portstewart weather for Wednesday 13th May 2026

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 93% chance of some rain and a fresh breeze of 29 kph from the north-west.