Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 4°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Wednesday
18th Feb
4

3

0

0
Thursday
19th Feb
6

4

1

0
Friday
20th Feb
10

5

2

1
Saturday
21st Feb
11

8

0

0
Sunday
22nd Feb
11

7

4

1

5-day weather forecast updated at 04:06 on Wednesday 18th February 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 18th February 2026

Expect overcast with light rain in Portstewart, Northern Ireland with a maximum temperature of 4°C and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 92% chance of some rain and a strong breeze of 48 kph from the south-east.

4
°C maximum temperature
3
°C minimum temperature
overcast with light rain
0
hours of sunshine
0
UV index (None)
92
% chance of some rain
<10
mm of rainfall expected
-2
°C wind chill
48
kph wind from SE

Portstewart weather for Thursday 19th February 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 6°C and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 66% chance of some rain and a moderate breeze of 27 kph from the south-east.

6
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
0
UV index (None)
66
% chance of some rain
<5
mm of rainfall expected
2
°C wind chill
27
kph wind from SE

Portstewart weather for Friday 20th February 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 10°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 70% chance of some rain and a fresh breeze of 37 kph from the south-west.

10
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
1
UV index (Low)
70
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
37
kph wind from SW

Portstewart weather for Saturday 21st February 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 11°C and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 82% chance of some rain and a moderate breeze of 22 kph from the south-west.

11
°C maximum temperature
8
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
0
UV index (None)
82
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
22
kph wind from SW

Portstewart weather for Sunday 22nd February 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 11°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 66% chance of some rain and a moderate breeze of 27 kph from the south-west.