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.

Thursday
4th Jun
14

10

3

4
Friday
5th Jun
15

9

2

4
Saturday
6th Jun
14

9

1

1
Sunday
7th Jun
16

9

5

1
Monday
8th Jun
16

7

7

5

5-day weather forecast updated at 04:03 on Thursday 4th 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 Thursday 4th June 2026

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 86% chance of some rain and a fresh breeze of 36 kph from the west.

14
°C maximum temperature
10
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
4
UV index (Moderate)
86
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
36
kph wind from W

Portstewart weather for Friday 5th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 70% chance of some rain and a fresh breeze of 29 kph from the south-west.

15
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
4
UV index (Moderate)
70
% chance of some rain
<5
mm of rainfall expected
15
°C wind chill
29
kph wind from SW

Portstewart weather for Saturday 6th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 14°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 91% chance of some rain and a moderate breeze of 23 kph from the south-east.

14
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
1
UV index (Low)
91
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
23
kph wind from SE

Portstewart weather for Sunday 7th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a moderate breeze of 26 kph from the south.

16
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
1
UV index (Low)
85
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
26
kph wind from S

Portstewart weather for Monday 8th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 88% chance of some rain and a gentle breeze of 19 kph from the south-west.