News
Wind and rain marking a change in the UK weather
Warnings have been issued as the weather across the UK becomes increasingly mild but wet and windy.
Read morePortstewart (County Londonderry) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 11° Celsius; -
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 10° Celsius;
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 10° Celsius; -
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 7° Celsius;
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 7° Celsius; -
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 7° Celsius;
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 7° Celsius; -
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 5° Celsius;
Maximum daytime temperature: 14° Celsius; Minimum nighttime temperature: 5° Celsius;
-
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 4° Celsius;
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 4° Celsius; -
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 5° Celsius;
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 5° Celsius;
7 day forecast for Portstewart
Today (18 September 2025)
| Time |
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|
| Weather symbols |  |
 |
 |
|
|
|
| Chance of precipitation |
40%
|
20%
|
10%
|
<5%
|
<5%
|
<5%
|
| Temperature |
14°
|
15°
|
15°
|
16°
|
16°
|
16°
|
| Feels like temperature (°C) |
12°
|
12°
|
13°
|
14°
|
14°
|
13°
|
| Wind direction and speed |
SE
13
|
SE
14
|
SSE
15
|
SSE
15
|
SSE
15
|
SSE
14
|
| Wind gust (mph) |
22
|
23
|
24
|
25
|
25
|
25
|
| Visibility |
G
|
G
|
G
|
VG
|
VG
|
VG
|
| Humidity |
92%
|
93%
|
92%
|
87%
|
86%
|
85%
|
| UV | 1 | 1 | - | - | - | - |
Friday (19 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
 |
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
20%
|
| Temperature (°C) |
16°
|
15°
|
15°
|
14°
|
14°
|
13°
|
12°
|
12°
|
12°
|
12°
|
14°
|
15°
|
15°
|
16°
|
16°
|
16°
|
16°
|
16°
|
15°
|
14°
|
13°
|
12°
|
12°
|
12°
|
| Feels like temperature (°C) |
13°
|
13°
|
12°
|
12°
|
12°
|
11°
|
10°
|
9°
|
9°
|
10°
|
12°
|
12°
|
13°
|
13°
|
14°
|
14°
|
14°
|
13°
|
13°
|
12°
|
11°
|
11°
|
10°
|
10°
|
| Wind direction and speed (mph) |
SSE
14
|
S
14
|
SSE
13
|
S
12
|
S
11
|
S
11
|
S
11
|
SSE
10
|
SSE
10
|
SSE
11
|
S
11
|
SSW
12
|
SW
13
|
SW
13
|
SW
13
|
SW
13
|
SW
13
|
SW
12
|
SW
11
|
SW
10
|
SSW
9
|
SSW
9
|
SSW
9
|
SSW
9
|
| Wind gust (mph) |
25
|
25
|
24
|
23
|
22
|
20
|
18
|
18
|
19
|
19
|
20
|
20
|
18
|
18
|
16
|
15
|
15
|
12
|
11
|
11
|
12
|
11
|
12
|
11
|
| Visibility (description) |
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
| Humidity |
82%
|
83%
|
81%
|
81%
|
82%
|
82%
|
80%
|
82%
|
82%
|
81%
|
78%
|
75%
|
71%
|
68%
|
66%
|
66%
|
66%
|
67%
|
68%
|
67%
|
68%
|
74%
|
75%
|
76%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Saturday (20 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
 |
|
|
|
|
|
| Chance of precipitation |
20%
|
20%
|
20%
|
20%
|
20%
|
20%
|
20%
|
30%
|
30%
|
30%
|
30%
|
40%
|
40%
|
30%
|
40%
|
50%
|
60%
|
70%
|
80%
|
80%
|
80%
|
80%
|
80%
|
70%
|
| Temperature (°C) |
12°
|
11°
|
11°
|
11°
|
11°
|
11°
|
10°
|
11°
|
11°
|
12°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
12°
|
12°
|
11°
|
11°
|
10°
|
10°
|
10°
|
| Feels like temperature (°C) |
10°
|
9°
|
9°
|
9°
|
9°
|
9°
|
8°
|
8°
|
8°
|
9°
|
10°
|
10°
|
10°
|
9°
|
9°
|
9°
|
8°
|
8°
|
7°
|
6°
|
6°
|
6°
|
5°
|
5°
|
| Wind direction and speed (mph) |
SW
9
|
SW
9
|
WSW
9
|
WSW
10
|
WSW
10
|
WNW
10
|
WNW
11
|
NNW
12
|
NNW
13
|
N
14
|
N
15
|
NNE
17
|
NNE
19
|
NNE
21
|
NNE
23
|
NNE
25
|
NNE
27
|
NNE
29
|
NNE
31
|
NNE
33
|
NNE
34
|
NNE
35
|
NNE
34
|
NNE
34
|
| Wind gust (mph) |
11
|
12
|
11
|
11
|
11
|
12
|
13
|
12
|
14
|
15
|
17
|
21
|
25
|
31
|
34
|
36
|
38
|
42
|
44
|
45
|
44
|
44
|
44
|
43
|
| Visibility (description) |
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
| Humidity |
78%
|
78%
|
78%
|
78%
|
79%
|
77%
|
78%
|
77%
|
77%
|
76%
|
77%
|
76%
|
75%
|
75%
|
74%
|
74%
|
73%
|
74%
|
76%
|
75%
|
74%
|
72%
|
73%
|
70%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - |
Sunday (21 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
70%
|
70%
|
60%
|
60%
|
70%
|
70%
|
70%
|
70%
|
60%
|
60%
|
60%
|
60%
|
50%
|
50%
|
50%
|
50%
|
50%
|
50%
|
40%
|
30%
|
30%
|
30%
|
30%
|
30%
|
| Temperature (°C) |
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
10°
|
10°
|
11°
|
11°
|
12°
|
12°
|
13°
|
13°
|
12°
|
12°
|
12°
|
11°
|
11°
|
11°
|
11°
|
10°
|
| Feels like temperature (°C) |
4°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
6°
|
7°
|
7°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
7°
|
7°
|
7°
|
7°
|
6°
|
| Wind direction and speed (mph) |
NNE
33
|
N
31
|
N
30
|
N
28
|
N
28
|
N
27
|
N
27
|
N
27
|
N
28
|
N
28
|
N
27
|
N
25
|
N
24
|
N
24
|
N
24
|
N
25
|
N
25
|
N
24
|
N
25
|
N
25
|
N
25
|
NNE
24
|
NNE
23
|
N
22
|
| Wind gust (mph) |
42
|
40
|
37
|
37
|
37
|
35
|
37
|
35
|
33
|
31
|
33
|
33
|
33
|
35
|
35
|
36
|
34
|
35
|
33
|
30
|
29
|
30
|
27
|
23
|
| Visibility (description) |
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
| Humidity |
72%
|
69%
|
66%
|
67%
|
67%
|
71%
|
69%
|
71%
|
72%
|
70%
|
72%
|
71%
|
67%
|
68%
|
65%
|
65%
|
67%
|
65%
|
64%
|
64%
|
64%
|
63%
|
64%
|
62%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | - | - | - | - |
Monday (22 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
30%
|
30%
|
30%
|
30%
|
30%
|
40%
|
30%
|
30%
|
40%
|
40%
|
40%
|
40%
|
40%
|
40%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
20%
|
30%
|
20%
|
20%
|
| Temperature (°C) |
10°
|
10°
|
9°
|
9°
|
9°
|
9°
|
8°
|
8°
|
9°
|
10°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
10°
|
9°
|
9°
|
9°
|
| Feels like temperature (°C) |
6°
|
6°
|
6°
|
5°
|
5°
|
5°
|
5°
|
5°
|
6°
|
7°
|
8°
|
9°
|
9°
|
10°
|
10°
|
10°
|
10°
|
10°
|
9°
|
8°
|
7°
|
7°
|
7°
|
7°
|
| Wind direction and speed (mph) |
NNE
21
|
NNE
19
|
NNE
17
|
NNE
16
|
N
16
|
NNE
15
|
N
14
|
N
13
|
NNE
12
|
N
12
|
N
12
|
NNW
12
|
NNW
12
|
NNW
12
|
NNW
13
|
NNW
13
|
NNW
13
|
NNW
13
|
NNW
13
|
NNW
12
|
NNW
11
|
NW
11
|
NW
10
|
NW
10
|
| Wind gust (mph) |
23
|
21
|
18
|
16
|
18
|
17
|
16
|
14
|
13
|
13
|
15
|
16
|
17
|
17
|
18
|
17
|
17
|
15
|
13
|
13
|
13
|
12
|
12
|
11
|
| Visibility (description) |
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
| Humidity |
61%
|
60%
|
60%
|
60%
|
60%
|
60%
|
59%
|
61%
|
59%
|
64%
|
66%
|
63%
|
63%
|
62%
|
63%
|
62%
|
59%
|
62%
|
62%
|
61%
|
61%
|
61%
|
62%
|
63%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Tuesday (23 September 2025)
| Time |
00:00
|
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
 |
|
|
|
|
| Chance of precipitation |
20%
|
20%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
9°
|
9°
|
8°
|
7°
|
11°
|
14°
|
14°
|
11°
|
8°
|
| Feels like temperature (°C) |
6°
|
6°
|
6°
|
5°
|
9°
|
12°
|
12°
|
9°
|
6°
|
| Wind direction and speed (mph) |
WNW
9
|
W
9
|
WSW
8
|
WSW
8
|
WSW
9
|
NNW
9
|
N
10
|
NE
9
|
E
8
|
| Wind gust (mph) |
12
|
12
|
12
|
10
|
12
|
12
|
11
|
10
|
10
|
| Visibility (description) |
E
|
E
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
65%
|
66%
|
69%
|
71%
|
71%
|
63%
|
60%
|
65%
|
69%
|
| UV | - | - | - | 1 | 2 | 3 | 1 | 1 | - |
Wednesday (24 September 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
| Temperature (°C) |
7°
|
6°
|
6°
|
11°
|
14°
|
15°
|
12°
|
8°
|
| Feels like temperature (°C) |
5°
|
4°
|
3°
|
10°
|
12°
|
13°
|
10°
|
6°
|
| Wind direction and speed (mph) |
SE
8
|
SE
7
|
SSE
8
|
SSE
9
|
SSE
10
|
SE
10
|
SE
9
|
SE
8
|
| Wind gust (mph) |
9
|
8
|
8
|
10
|
11
|
10
|
10
|
9
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
73%
|
75%
|
78%
|
77%
|
68%
|
65%
|
70%
|
74%
|
| UV | - | - | 1 | 2 | 3 | 1 | 1 | - |
Tooltip header
Portstewart weather map
View the weather with our interactive map
Loading map...
Northern Ireland weather forecast
Headline:
Mostly dry with sunny spells Friday.
This Evening and Tonight:
Cloud with outbreaks of patchy light rain will die out this evening. Then the rest of the night will be largely dry with some lengthy clear periods. Chance of cloud and rain fringing into eastern County Down at times. Minimum temperature 10 °C.
Friday:
It will be largely dry with some brightness. Chance of a little rain across County Down at times. Maximum temperature 17 °C.
Outlook for Saturday to Monday:
Cloudy on Saturday with rain likely across the east, becoming windy later. A colder day on Sunday with showers. Bright and largely dry with fewer showers on Monday.
Updated:
UK long range weather forecast
Nearest forecasts
- Portrush (Beach) 2.6 miles
- Portrush - Mill (West) Strand (Beach) 2.8 miles
- Portrush 2.9 miles
- Portrush (Coleraine) 2.9 miles
- Portstewart (The Strand)(Beach) 3.0 miles
- Guy L. Wilson Daffodil Garden 3.3 miles
- Hezlett House (NT) 3.4 miles
- Coleraine 3.6 miles
- Royal Portrush Golf Club 3.8 miles
- Magilligan Strand, Benone (Beach) 4.1 miles