Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 17°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Wednesday
14th Oct
17

8

0

1
Thursday
15th Oct
14

9

3

1
Friday
16th Oct
12

8

4

1
Saturday
17th Oct
12

4

6

2
Sunday
18th Oct
11

3

6

2

5-day weather forecast updated at 04:03 on Wednesday 14th October 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 14th October 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a strong breeze of 41 kph from the south.

17
°C maximum temperature
8
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
1
UV index (Low)
85
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
41
kph wind from S

Portstewart weather for Thursday 15th October 2026

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 14°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 33% chance of some rain and a moderate breeze of 20 kph from the west.

14
°C maximum temperature
9
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
1
UV index (Low)
33
% chance of some rain
<10
mm of rainfall expected
14
°C wind chill
20
kph wind from W

Portstewart weather for Friday 16th October 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 12°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 35% chance of some rain and a moderate breeze of 28 kph from the north-west.

12
°C maximum temperature
8
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
35
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
28
kph wind from NW

Portstewart weather for Saturday 17th October 2026

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 12°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north.

12
°C maximum temperature
4
°C minimum temperature
scattered clouds
6
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
12
°C wind chill
18
kph wind from N

Portstewart weather for Sunday 18th October 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 11°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south.