Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 66°F. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Saturday
23rd May
66

52

3

UV3
Sunday
24th May
75

55

1

UV2
Monday
25th May
73

52

3

UV3
Tuesday
26th May
64

48

9

UV5
Wednesday
27th May
72

48

13

UV6

5-day weather forecast updated at 04:03 on Friday 22nd 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 Saturday 23rd May 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 66°F, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 13 mph from the south-west.

66
°F maximum temperature
52
°F minimum temperature
broken clouds
3
hours of sunshine
UV3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
13
mph wind from SW

Portstewart weather for Sunday 24th May 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 75°F, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 2% chance of some rain and a light breeze of 6 mph from the south.

75
°F maximum temperature
55
°F minimum temperature
mostly cloudy with light rain
1
hour of sunshine
UV2
UV index (Low)
2
% chance of some rain
<2
mm of rainfall expected
75
°F wind chill
6
mph wind from S

Portstewart weather for Monday 25th May 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 73°F, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the south.

73
°F maximum temperature
52
°F minimum temperature
broken clouds
3
hours of sunshine
UV3
UV index (Moderate)
0
mm of rainfall expected
73
°F wind chill
7
mph wind from S

Portstewart weather for Tuesday 26th May 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 64°F, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north.

64
°F maximum temperature
48
°F minimum temperature
broken clouds
9
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
64
°F wind chill
9
mph wind from N

Portstewart weather for Wednesday 27th May 2026

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 72°F, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the south-east.