Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 16°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Thursday
11th Jun
16

9

2

2
Friday
12th Jun
16

11

4

4
Saturday
13th Jun
16

10

7

5
Sunday
14th Jun
17

10

2

3
Monday
15th Jun
19

9

1

2

5-day weather forecast updated at 04:04 on Thursday 11th 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 11th June 2026

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 81% chance of some rain and a moderate breeze of 27 kph from the west.

16
°C maximum temperature
9
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
2
UV index (Low)
81
% chance of some rain
<10
mm of rainfall expected
16
°C wind chill
27
kph wind from W

Portstewart weather for Friday 12th June 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 32 kph from the west.

16
°C maximum temperature
11
°C minimum temperature
broken clouds
4
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
32
kph wind from W

Portstewart weather for Saturday 13th 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 0-2 mm of rainfall expected with 26% chance of some rain and a fresh breeze of 34 kph from the west.

16
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
7
hours of sunshine
5
UV index (Moderate)
26
% chance of some rain
<2
mm of rainfall expected
16
°C wind chill
34
kph wind from W

Portstewart weather for Sunday 14th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 13% chance of some rain and a light breeze of 12 kph from the north-east.

17
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
3
UV index (Moderate)
13
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
12
kph wind from NE

Portstewart weather for Monday 15th June 2026

Expect overcast skies in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-east.