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.

Saturday
30th May
17

11

2

4
Sunday
31st May
17

12

6

5
Monday
1st Jun
19

11

0

4
Tuesday
2nd Jun
17

11

0

4
Wednesday
3rd Jun
17

11

1

3

5-day weather forecast updated at 04:03 on Saturday 30th May 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 Saturday 30th May 2026

Expect isolated thunderstorms in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 69% chance of some rain and a moderate breeze of 20 kph from the south.

17
°C maximum temperature
11
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
4
UV index (Moderate)
69
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
20
kph wind from S

Portstewart weather for Sunday 31st May 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-west.

17
°C maximum temperature
12
°C minimum temperature
broken clouds
6
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
17
°C wind chill
19
kph wind from SW

Portstewart weather for Monday 1st June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 16 kph from the south.

19
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
4
UV index (Moderate)
78
% chance of some rain
<5
mm of rainfall expected
19
°C wind chill
16
kph wind from S

Portstewart weather for Tuesday 2nd June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 81% chance of some rain and a gentle breeze of 14 kph from the north-west.

17
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
4
UV index (Moderate)
81
% chance of some rain
<5
mm of rainfall expected
17
°C wind chill
14
kph wind from NW

Portstewart weather for Wednesday 3rd June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a moderate breeze of 20 kph from the west.