Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 15°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Monday
8th Jun
15

9

6

3
Tuesday
9th Jun
13

8

4

4
Wednesday
10th Jun
14

8

4

4
Thursday
11th Jun
16

8

2

4
Friday
12th Jun
17

12

3

5

5-day weather forecast updated at 04:03 on Monday 8th 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 Monday 8th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a moderate breeze of 23 kph from the south-west.

15
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
6
hours of sunshine
3
UV index (Moderate)
85
% chance of some rain
<5
mm of rainfall expected
15
°C wind chill
23
kph wind from SW

Portstewart weather for Tuesday 9th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 74% chance of some rain and a moderate breeze of 28 kph from the north-west.

13
°C maximum temperature
8
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
4
UV index (Moderate)
74
% chance of some rain
<5
mm of rainfall expected
13
°C wind chill
28
kph wind from NW

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 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 77% chance of some rain and a moderate breeze of 25 kph from the west.

14
°C maximum temperature
8
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
4
UV index (Moderate)
77
% chance of some rain
<5
mm of rainfall expected
14
°C wind chill
25
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 4 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 82% chance of some rain and a fresh breeze of 29 kph from the south.

16
°C maximum temperature
8
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
4
UV index (Moderate)
82
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
29
kph wind from S

Portstewart weather for Friday 12th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a fresh breeze of 30 kph from the west.