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.

Monday
11th May
11

8

7

3
Tuesday
12th May
12

8

7

4
Wednesday
13th May
11

6

6

4
Thursday
14th May
12

6

6

4
Friday
15th May
13

6

3

1

5-day weather forecast updated at 04:03 on Monday 11th 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 Monday 11th May 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 1% chance of some rain and a moderate breeze of 25 kph from the north.

11
°C maximum temperature
8
°C minimum temperature
sunshine and showers
7
hours of sunshine
3
UV index (Moderate)
1
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
25
kph wind from N

Portstewart weather for Tuesday 12th May 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 73% chance of some rain and a fresh breeze of 33 kph from the west.

12
°C maximum temperature
8
°C minimum temperature
sunshine and showers
7
hours of sunshine
4
UV index (Moderate)
73
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
33
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 11°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 96% chance of some rain and a fresh breeze of 38 kph from the north-west.

11
°C maximum temperature
6
°C minimum temperature
mostly cloudy with rain
6
hours of sunshine
4
UV index (Moderate)
96
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
38
kph wind from NW

Portstewart weather for Thursday 14th May 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 57% chance of some rain and a fresh breeze of 32 kph from the north-west.

12
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
6
hours of sunshine
4
UV index (Moderate)
57
% chance of some rain
<2
mm of rainfall expected
12
°C wind chill
32
kph wind from NW

Portstewart weather for Friday 15th May 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 13°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 39% chance of some rain and a moderate breeze of 22 kph from the north.