Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 19°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Friday
10th Jul
19

14

3

4
Saturday
11th Jul
18

14

6

3
Sunday
12th Jul
26

15

9

5
Monday
13th Jul
24

14

17

6
Tuesday
14th Jul
24

12

10

6

5-day weather forecast updated at 04:03 on Friday 10th 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 Friday 10th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the north.

19
°C maximum temperature
14
°C minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
22
kph wind from N

Portstewart weather for Saturday 11th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north-west.

18
°C maximum temperature
14
°C minimum temperature
broken clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
21
kph wind from NW

Portstewart weather for Sunday 12th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the east.

26
°C maximum temperature
15
°C minimum temperature
broken clouds
9
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
19
kph wind from E

Portstewart weather for Monday 13th July 2026

Expect clear skies in Portstewart, Northern Ireland with a maximum temperature of 24°C, maximum UV of 6 (High) and 17 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the east.

24
°C maximum temperature
14
°C minimum temperature
clear skies
17
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
19
kph wind from E

Portstewart weather for Tuesday 14th July 2026

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 24°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the east.