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.

Tuesday
13th Oct
17

8

4

1
Wednesday
14th Oct
16

8

0

1
Thursday
15th Oct
14

7

1

1
Friday
16th Oct
12

6

4

1
Saturday
17th Oct
12

5

4

1

5-day weather forecast updated at 04:03 on Tuesday 13th 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 Tuesday 13th October 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 45% chance of some rain and a strong breeze of 41 kph from the west.

17
°C maximum temperature
8
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
45
% chance of some rain
<5
mm of rainfall expected
17
°C wind chill
41
kph wind from W

Portstewart weather for Wednesday 14th October 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 16°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 51% chance of some rain and a strong breeze of 43 kph from the south.

16
°C maximum temperature
8
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
1
UV index (Low)
51
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
43
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 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 63% chance of some rain and a fresh breeze of 34 kph from the west.

14
°C maximum temperature
7
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
1
UV index (Low)
63
% chance of some rain
<10
mm of rainfall expected
14
°C wind chill
34
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 29% chance of some rain and a gentle breeze of 19 kph from the north-west.

12
°C maximum temperature
6
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
29
% chance of some rain
<2
mm of rainfall expected
12
°C wind chill
19
kph wind from NW

Portstewart weather for Saturday 17th October 2026

Expect broken clouds 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 mm of rainfall expected and a light breeze of 10 kph from the north.