Portstewart Strand Surf Break

Lat Long: 55.17° N 6.75° W

Portstewart Strand 48 hour detailed Surf Forecast

Issued: 12 pm 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Portstewart Strand sea temperature is
15.2°C
1.5° 

Portstewart Strand surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Portstewart Strand today (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 8ft (2.4m), 12s period with NW swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 6ft (1.8m), 11s period with NW swell.
  • Evening surf: Evening surf (20 Sep, local time) - 5ft (1.6m), 11s period with NW swell.

The current surf forecast for Portstewart Strand at 7PM is: 1.6m 11s primary swell from a Northwest direction (forecast issued at 12:00pm September 20). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (20 Sep)8ft (2.4m)12s
Afternoon (20 Sep)6ft (1.8m)11s
Evening (20 Sep)5ft (1.6m)11s

Table - waves today at Portstewart Strand. (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 14mm), heaviest on Tue afternoon. Warm (max 22°C on Mon afternoon, min 11°C on Tue night). Winds decreasing (fresh winds from the WNW on Sun morning, calm by Tue afternoon).

Sun
20
Monday
21
Tuesday
22
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
2
3
3
1
1
1
1
0
1
1
1
0
0
0
0
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.4
NW
12
1.9
NW
11
1.7
NW
11
1.6
NW
11
1.6
NW
12
1.4
NW
13
1.2
NW
12
1.1
NW
12
1.1
NW
12
0.9
NW
12
0.9
NW
11
0.8
NW
11
0.7
NW
11
0.7
NW
11
0.7
NW
10
0.6
WNW
10
0.8
WNW
10
0.7
WNW
10
0.4
NW
14
0.9
NW
15
1.1
NW
15
Wave Graph
Metric surfscale
Energy kJ
1470
866
671
564
638
653
430
361
309
220
179
140
117
115
106
64
121
90
58
318
558
Wind (km/h)
30
WNW
25
WNW
20
WNW
10
WNW
10
SSE
20
SSE
20
S
15
S
15
SW
15
SW
10
SW
15
SSW
15
S
15
S
15
S
15
S
15
NW
10
NW
5
NNW
10
N
5
NNE
Wind State
cross-on
cross-on
cross-on
cross-on
off
off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
on
on
glassy
cross-on
cross-on
High Tide
3:29PM1.15m
3:56AM1.03m
4:25PM1.30m
4:33AM1.16m
4:57PM1.46m
Low Tide
7:54AM0.76m
9:57PM0.75m
9:43AM0.65m
10:51PM0.62m
10:35AM0.50m
clear
part cloud
part cloud
cloud
cloud
cloud
light rain
cloud
cloud
clear
clear
clear
clear
clear
clear
cloud
cloud
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
7:09
7:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:31
7:29
7:27
 mm
1
2
3
2
1
Temp °C
13
14
14
13
13
13
13
15
16
20
22
21
19
17
16
15
14
12
12
12
11
Feels °C
7
9
10
11
10
9
9
13
15
19
21
20
18
15
14
12
12
11
12
11
10
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Portstewart Strand surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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