Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 18°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Saturday
4th Jul
18

14

0

2
Sunday
5th Jul
19

15

0

2
Monday
6th Jul
20

15

0

2
Tuesday
7th Jul
20

14

1

3
Wednesday
8th Jul
22

13

0

4

5-day weather forecast updated at 04:03 on Saturday 4th 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 Saturday 4th July 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a fresh breeze of 31 kph from the west.

18
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
2
UV index (Low)
58
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
31
kph wind from W

Portstewart weather for Sunday 5th July 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 32% chance of some rain and a moderate breeze of 23 kph from the west.

19
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
2
UV index (Low)
32
% chance of some rain
<2
mm of rainfall expected
19
°C wind chill
23
kph wind from W

Portstewart weather for Monday 6th July 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 34% chance of some rain and a fresh breeze of 33 kph from the west.

20
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
2
UV index (Low)
34
% chance of some rain
<2
mm of rainfall expected
20
°C wind chill
33
kph wind from W

Portstewart weather for Tuesday 7th July 2026

Expect overcast skies in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the west.

20
°C maximum temperature
14
°C minimum temperature
overcast skies
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
24
kph wind from W

Portstewart weather for Wednesday 8th July 2026

Expect overcast skies in Portstewart, Northern Ireland with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-east.