Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 17°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Wednesday
1st Jul
17

13

0

2
Thursday
2nd Jul
16

12

4

5
Friday
3rd Jul
21

11

2

2
Saturday
4th Jul
20

14

2

2
Sunday
5th Jul
20

13

3

1

5-day weather forecast updated at 04:03 on Wednesday 1st July 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 Wednesday 1st July 2026

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 96% chance of some rain and a fresh breeze of 36 kph from the south.

17
°C maximum temperature
13
°C minimum temperature
mostly cloudy with rain
0
hours of sunshine
2
UV index (Low)
96
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
36
kph wind from S

Portstewart weather for Thursday 2nd July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 41 kph from the north-west.

16
°C maximum temperature
12
°C minimum temperature
broken clouds
4
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
41
kph wind from NW

Portstewart weather for Friday 3rd July 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 21°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 28% chance of some rain and a moderate breeze of 23 kph from the south-west.

21
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
2
UV index (Low)
28
% chance of some rain
<2
mm of rainfall expected
21
°C wind chill
23
kph wind from SW

Portstewart weather for Saturday 4th July 2026

Expect overcast skies in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south-west.

20
°C maximum temperature
14
°C minimum temperature
overcast skies
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
22
kph wind from SW

Portstewart weather for Sunday 5th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the west.