Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 20°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Wednesday
24th Jun
20

15

4

4
Thursday
25th Jun
27

14

7

6
Friday
26th Jun
24

16

3

5
Saturday
27th Jun
20

14

2

4
Sunday
28th Jun
19

11

8

6

5-day weather forecast updated at 04:03 on Wednesday 24th 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 Wednesday 24th June 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north.

20
°C maximum temperature
15
°C minimum temperature
broken clouds
4
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from N

Portstewart weather for Thursday 25th June 2026

Expect isolated thunderstorms in Portstewart, Northern Ireland with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a gentle breeze of 16 kph from the north-east.

27
°C maximum temperature
14
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
6
UV index (High)
31
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
16
kph wind from NE

Portstewart weather for Friday 26th June 2026

Expect isolated thunderstorms in Portstewart, Northern Ireland with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 67% chance of some rain and a gentle breeze of 18 kph from the north-west.

24
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
5
UV index (Moderate)
67
% chance of some rain
<5
mm of rainfall expected
24
°C wind chill
18
kph wind from NW

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 4 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 77% chance of some rain and a fresh breeze of 32 kph from the south.

20
°C maximum temperature
14
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
4
UV index (Moderate)
77
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
32
kph wind from S

Portstewart weather for Sunday 28th June 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 59% chance of some rain and a fresh breeze of 29 kph from the south-west.