Harlech Surf Break

Lat Long: 52.84° N 4.12° W

Harlech 48 hour detailed Surf Forecast

Issued: 12 pm 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Harlech sea temperature is
17.4°C
2.1° 

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


How big are the waves at Harlech today (18 Sep):

  • Morning surf: Morning surf (18 Sep, local time) - 3.5ft (1.0m), 5s period with WSW swell.
  • Afternoon surf: Afternoon surf (18 Sep, local time) - 6ft (1.8m), 7s period with SW swell.
  • Evening surf: Evening surf (18 Sep, local time) - 6.5ft (2.0m), 8s period with WSW swell.

The current surf forecast for Harlech at 8PM is: 2.0m 8s primary swell from a West-southwest direction (forecast issued at 12:00pm September 18). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (18 Sep)3.5ft (1.0m)5s
Afternoon (18 Sep)6ft (1.8m)7s
Evening (18 Sep)6.5ft (2.0m)8s

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


Short Range Forecast

Moderate rain (total 19mm), heaviest on Fri afternoon. Very mild (max 17°C on Sat morning, min 12°C on Sat night). Winds decreasing (strong winds from the SW on Fri afternoon, calm by Sun afternoon).

Fri
18
Saturday
19
Sunday
20
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
1
WSW
5
1.4
SW
6
2
WSW
7
2
WSW
8
1.9
WSW
8
2
WSW
8
2
WSW
8
1.9
WSW
8
1.8
WSW
7
1.4
WSW
7
1.2
WSW
7
1.1
WSW
5
1.1
WSW
5
1.1
W
5
1
W
5
0.9
W
5
0.9
W
5
0.5
NW
5
0.4
WSW
6
0.4
SW
6
0.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
52
137
417
476
436
441
452
414
362
203
157
54
50
51
43
37
36
15
16
10
10
Wind (km/h)
25
SW
35
SW
40
SW
35
SW
35
SW
35
SW
35
SW
35
SW
35
WSW
30
WSW
25
WSW
25
WSW
20
W
20
W
20
WNW
20
WNW
20
WNW
15
WNW
10
W
5
SW
10
S
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
on
glassy
cross
High Tide
1:05PM3.19m
1:34AM2.90m
2:01PM2.86m
2:53AM2.60m
3:54PM2.70m
Low Tide
7:10AM1.45m
7:50PM1.49m
8:13AM1.69m
9:19PM1.69m
9:58AM1.81m
cloud
light rain
heavy rain
light rain
cloud
cloud
cloud
light rain
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:56
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:25
7:22
7:21
 mm
1
11
4
1
1
1
Temp °C
15
13
14
16
16
16
16
16
16
17
17
16
15
14
13
12
13
13
13
12
12
Feels °C
10
7
7
11
11
11
11
11
11
12
13
12
12
10
9
8
9
10
11
11
9
  • 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 Harlech 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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