Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 24°C. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Thursday
16th Jul
24

14

16

5
Friday
17th Jul
18

13

6

5
Saturday
18th Jul
17

11

9

4
Sunday
19th Jul
20

11

8

6
Monday
20th Jul
18

11

2

6

5-day weather forecast updated at 04:03 on Thursday 16th July 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 Thursday 16th July 2026

Expect clear skies in Portstewart, Northern Ireland with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 16 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north.

24
°C maximum temperature
14
°C minimum temperature
clear skies
16
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
24
°C wind chill
12
kph wind from N

Portstewart weather for Friday 17th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the north-west.

18
°C maximum temperature
13
°C minimum temperature
broken clouds
6
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
18
°C wind chill
26
kph wind from NW

Portstewart weather for Saturday 18th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 31 kph from the north.

17
°C maximum temperature
11
°C minimum temperature
broken clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
31
kph wind from N

Portstewart weather for Sunday 19th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 20°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north.

20
°C maximum temperature
11
°C minimum temperature
broken clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
20
°C wind chill
21
kph wind from N

Portstewart weather for Monday 20th July 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 18°C, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-west.