Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 43°F. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Wednesday
14th Jan
43

36

0

0
Thursday
15th Jan
43

36

4

0
Friday
16th Jan
43

36

0

0
Saturday
17th Jan
45

37

3

0
Sunday
18th Jan
43

37

3

0

5-day weather forecast updated at 04:04 on Wednesday 14th January 2026 GMT

More about Portstewart

Portstewart by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Northern Ireland

Fred Olsen: Top cruise offers for 2026/2027

Sale

Explore latest offers on Fred Olsen Cruises in 2026/2027
Find last minute deals or early bird discounts
Filter offers by price, destination, ship & departure point

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

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 January 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 43°F and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 98% chance of some rain and a fresh breeze of 22 mph from the south.

43
°F maximum temperature
36
°F minimum temperature
mostly cloudy with light rain
0
hours of sunshine
0
UV index (None)
98
% chance of some rain
<5
mm of rainfall expected
34
°F wind chill
22
mph wind from S

Portstewart weather for Thursday 15th January 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 43°F and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 12 mph from the south.

43
°F maximum temperature
36
°F minimum temperature
broken clouds
4
hours of sunshine
0
UV index (None)
0
mm of rainfall expected
37
°F wind chill
12
mph wind from S

Portstewart weather for Friday 16th January 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 43°F and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 21% chance of some rain and a gentle breeze of 11 mph from the south-east.

43
°F maximum temperature
36
°F minimum temperature
mostly cloudy with light rain
0
hours of sunshine
0
UV index (None)
21
% chance of some rain
<2
mm of rainfall expected
36
°F wind chill
11
mph wind from SE

Portstewart weather for Saturday 17th January 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 45°F and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 10 mph from the east.

45
°F maximum temperature
37
°F minimum temperature
broken clouds
3
hours of sunshine
0
UV index (None)
0
mm of rainfall expected
41
°F wind chill
10
mph wind from E

Portstewart weather for Sunday 18th January 2026

Expect sunshine and showers in Portstewart, Northern Ireland with a maximum temperature of 43°F and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 18% chance of some rain and a gentle breeze of 12 mph from the south.