Portstewart weather live forecast

Today's maximum temperature in Portstewart is expected to be 55°F. Select a day from the live weather forecast for Portstewart, Northern Ireland, UK for more weather parameters.

Tuesday
9th Jun
55

46

4

4
Wednesday
10th Jun
55

48

6

4
Thursday
11th Jun
61

46

1

2
Friday
12th Jun
66

52

3

3
Saturday
13th Jun
70

54

12

6

5-day weather forecast updated at 04:03 on Tuesday 9th June 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 Tuesday 9th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 55°F, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 82% chance of some rain and a moderate breeze of 17 mph from the north-west.

55
°F maximum temperature
46
°F minimum temperature
mostly cloudy with light rain
4
hours of sunshine
4
UV index (Moderate)
82
% chance of some rain
<5
mm of rainfall expected
55
°F wind chill
17
mph wind from NW

Portstewart weather for Wednesday 10th June 2026

Expect mostly cloudy with light rain in Portstewart, Northern Ireland with a maximum temperature of 55°F, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 12 mph from the west.

55
°F maximum temperature
48
°F minimum temperature
mostly cloudy with light rain
6
hours of sunshine
4
UV index (Moderate)
78
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
12
mph wind from W

Portstewart weather for Thursday 11th June 2026

Expect mostly cloudy with rain in Portstewart, Northern Ireland with a maximum temperature of 61°F, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 63% chance of some rain and a fresh breeze of 18 mph from the south.

61
°F maximum temperature
46
°F minimum temperature
mostly cloudy with rain
1
hour of sunshine
2
UV index (Low)
63
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
18
mph wind from S

Portstewart weather for Friday 12th June 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 gentle breeze of 12 mph from the west.

66
°F maximum temperature
52
°F minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
66
°F wind chill
12
mph wind from W

Portstewart weather for Saturday 13th June 2026

Expect broken clouds in Portstewart, Northern Ireland with a maximum temperature of 70°F, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the south-west.