Portstewart weather live forecast

Tomorrow's maximum temperature in Portstewart is expected to be 63°F.

Wednesday
18th Jun

63

55

1
Thursday
19th Jun

79

54

11
Friday
20th Jun

81

59

10
Saturday
21st Jun

79

61

5
Sunday
22nd Jun

66

54

6

5-day weather forecast updated at 04:03 on Wednesday 18th June 2025 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 18th June 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 63°F, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 46% chance of some rain and a gentle breeze of 9 mph from the south-west.

63
°F maximum temperature
55
°F minimum temperature
mostly cloudy with light rain
1
hour of sunshine
5
UV index (Moderate)
46
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
9
mph wind from SW

Portstewart weather for Thursday 19th June 2025

Expect scattered clouds in Portstewart, Northern Ireland with a maximum temperature of 79°F, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the south.

79
°F maximum temperature
54
°F minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
79
°F wind chill
14
mph wind from S

Portstewart weather for Friday 20th June 2025

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 17 mph from the south.

81
°F maximum temperature
59
°F minimum temperature
broken clouds
10
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
17
mph wind from S

Portstewart weather for Saturday 21st June 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 79°F, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a gentle breeze of 11 mph from the south.

79
°F maximum temperature
61
°F minimum temperature
mostly cloudy with light rain
5
hours of sunshine
3
UV index (Moderate)
44
% chance of some rain
<2
mm of rainfall expected
79
°F wind chill
11
mph wind from S

Portstewart weather for Sunday 22nd June 2025

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 66°F, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 53% chance of some rain and a gentle breeze of 8 mph from the west.