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.

Tuesday
29th Sep
19

11

2

0
Wednesday
30th Sep
18

11

9

2
Thursday
1st Oct
16

9

4

2
Friday
2nd Oct
17

9

7

2
Saturday
3rd Oct
17

8

7

2

5-day weather forecast updated at 04:03 on Tuesday 29th September 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 29th September 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 19°C and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 74% chance of some rain and a strong breeze of 46 kph from the south-east.

19
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
0
UV index (None)
74
% chance of some rain
<2
mm of rainfall expected
19
°C wind chill
46
kph wind from SE

Portstewart weather for Wednesday 30th September 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 5-10 mm of rainfall expected with 35% chance of some rain and a strong breeze of 49 kph from the south.

18
°C maximum temperature
11
°C minimum temperature
sunshine and showers
9
hours of sunshine
2
UV index (Low)
35
% chance of some rain
<10
mm of rainfall expected
18
°C wind chill
49
kph wind from S

Portstewart weather for Thursday 1st October 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a fresh breeze of 29 kph from the south.

16
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
2
UV index (Low)
44
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
29
kph wind from S

Portstewart weather for Friday 2nd October 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 62% chance of some rain and a moderate breeze of 25 kph from the south-west.

17
°C maximum temperature
9
°C minimum temperature
sunshine and showers
7
hours of sunshine
2
UV index (Low)
62
% chance of some rain
<2
mm of rainfall expected
17
°C wind chill
25
kph wind from SW

Portstewart weather for Saturday 3rd October 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south.