Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 12°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Monday
16th Mar
12

4

1

1
Tuesday
17th Mar
13

8

1

1
Wednesday
18th Mar
13

6

3

2
Thursday
19th Mar
14

5

8

2
Friday
20th Mar
14

4

5

2

5-day weather forecast updated at 04:03 on Monday 16th March 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 Monday 16th March 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 12°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 93% chance of some rain and a moderate breeze of 28 kph from the south-west.

12
°C maximum temperature
4
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
1
UV index (Low)
93
% chance of some rain
<5
mm of rainfall expected
12
°C wind chill
28
kph wind from SW

Portstewart weather for Tuesday 17th March 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 13°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 55% chance of some rain and a fresh breeze of 38 kph from the south.

13
°C maximum temperature
8
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
1
UV index (Low)
55
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
38
kph wind from S

Portstewart weather for Wednesday 18th March 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 13°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-east.

13
°C maximum temperature
6
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
13
°C wind chill
11
kph wind from NE

Portstewart weather for Thursday 19th March 2026

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 14°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-east.

14
°C maximum temperature
5
°C minimum temperature
scattered clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from NE

Portstewart weather for Friday 20th March 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 14°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.