Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 73°F. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Wednesday
27th May
73

50

14

6
Thursday
28th May
75

59

8

6
Friday
29th May
72

54

7

5
Saturday
30th May
66

52

1

4
Sunday
31st May
66

54

4

5

5-day weather forecast updated at 04:03 on Wednesday 27th May 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 27th May 2026

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 73°F, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 12 mph from the south-east.

73
°F maximum temperature
50
°F minimum temperature
scattered clouds
14
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
12
mph wind from SE

Portstewart weather for Thursday 28th May 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 75°F, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 19 mph from the south-east.

75
°F maximum temperature
59
°F minimum temperature
broken clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
19
mph wind from SE

Portstewart weather for Friday 29th May 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 72°F, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the south-west.

72
°F maximum temperature
54
°F minimum temperature
broken clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
72
°F wind chill
16
mph wind from SW

Portstewart weather for Saturday 30th May 2026

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 66°F, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 76% chance of some rain and a moderate breeze of 12 mph from the south.

66
°F maximum temperature
52
°F minimum temperature
mostly cloudy with rain
1
hour of sunshine
4
UV index (Moderate)
76
% chance of some rain
<10
mm of rainfall expected
66
°F wind chill
12
mph wind from S

Portstewart weather for Sunday 31st May 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 66°F, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 72% chance of some rain and a moderate breeze of 12 mph from the west.