Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 25°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Tuesday
23rd Jun
25

14

10

5
Wednesday
24th Jun
22

14

3

3
Thursday
25th Jun
30

15

7

6
Friday
26th Jun
26

17

8

4
Saturday
27th Jun
20

14

3

5

5-day weather forecast updated at 04:03 on Tuesday 23rd 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 Tuesday 23rd June 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north.

25
°C maximum temperature
14
°C minimum temperature
broken clouds
10
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
25
°C wind chill
16
kph wind from N

Portstewart weather for Wednesday 24th June 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-east.

22
°C maximum temperature
14
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from NE

Portstewart weather for Thursday 25th June 2026

Expect isolated thunderstorms in Portstewart, Northern Ireland with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 36% chance of some rain and a moderate breeze of 22 kph from the south-east.

30
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
6
UV index (High)
36
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from SE

Portstewart weather for Friday 26th June 2026

Expect isolated thunderstorms in Portstewart, Northern Ireland with a maximum temperature of 26°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a fresh breeze of 34 kph from the south.

26
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
4
UV index (Moderate)
52
% chance of some rain
<5
mm of rainfall expected
26
°C wind chill
34
kph wind from S

Portstewart weather for Saturday 27th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a fresh breeze of 29 kph from the south.