Portstewart weather live forecast

Tomorrow's maximum temperature in Portstewart is expected to be 17°C.

Tuesday
8th Jul

17

11

1
Wednesday
9th Jul

22

14

4
Thursday
10th Jul

23

14

4
Friday
11th Jul

27

14

13
Saturday
12th Jul

28

14

13

5-day weather forecast updated at 04:03 on Tuesday 8th July 2025 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 Tuesday 8th July 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 24% chance of some rain and a gentle breeze of 18 kph from the west.

17
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
2
UV index (Low)
24
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
18
kph wind from W

Portstewart weather for Wednesday 9th July 2025

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.

22
°C maximum temperature
14
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
14
kph wind from W

Portstewart weather for Thursday 10th July 2025

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.

23
°C maximum temperature
14
°C minimum temperature
broken clouds
4
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from SW

Portstewart weather for Friday 11th July 2025

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south.

27
°C maximum temperature
14
°C minimum temperature
scattered clouds
13
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
22
kph wind from S

Portstewart weather for Saturday 12th July 2025

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.