Harlech Surf Break

Lat Long: 52.84° N 4.12° W

Harlech 48 hour detailed Surf Forecast

Issued: 6 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Harlech sea temperature is
19.9° C
4.0° 

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 (20 Aug):

  • Morning surf: Morning surf (20 Aug, local time) - 2.5ft (0.7m), 5s period with WSW swell.
  • Afternoon surf: Afternoon surf (20 Aug, local time) - 2.5ft (0.8m), 5s period with NNW swell.
  • Evening surf: Evening surf (20 Aug, local time) - 2ft (0.6m), 4s period with NNW swell.

The current surf forecast for Harlech at 11AM is: 0.6m 6s primary swell from a West-southwest direction and 0.1m 15s secondary swell from a West direction, 0.6m 4s secondary swell from a Northwest direction (forecast issued at 06:00am August 20). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (20 Aug)2.5ft (0.7m)5s
Afternoon (20 Aug)2.5ft (0.8m)5s
Evening (20 Aug)2ft (0.6m)4s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Fri afternoon. Very mild (max 17°C on Thu morning, min 11°C on Thu night). Wind will be generally light.

Thursday
20
Friday
21
Saturday
22
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
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
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
WSW
7
0.7
WSW
5
0.6
WSW
5
0.6
NW
5
0.8
NNW
5
0.7
NNW
4
0.5
NW
4
0.5
NW
4
0.5
NW
4
0.4
NW
4
0.5
NW
5
0.4
WNW
5
0.1
W
13
0.4
NW
4
0.4
NNW
4
0.4
NW
4
0.1
W
13
0.1
W
16
0.1
W
15
0.1
W
15
0.1
W
15
0.1
W
15
0.1
W
15
Wave Graph
Metric surfscale
Energy kJ
64
22
19
17
31
18
9
8
9
7
10
8
4
5
6
4
3
5
4
4
4
4
4
Wind (km/h)
10
WNW
10
NW
15
NW
15
NW
20
N
20
N
15
N
10
N
10
N
10
N
10
NNW
5
NW
5
NW
10
NE
15
NE
10
NE
10
NNE
10
NNE
5
NNW
15
WNW
15
NW
10
NNW
10
NE
Wind State
on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross-on
cross-on
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-off
High Tide
1:55PM3.11m
2:28AM2.96m
3:05PM2.85m
3:58AM2.73m
4:48PM2.79m
Low Tide
8:11AM1.37m
8:32PM1.46m
9:04AM1.62m
9:50PM1.66m
10:38AM1.74m
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
light rain
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:32
8:30
8:29
 mm
1
1
1
1
2
1
3
2
Temp °C
14
14
15
17
16
16
13
12
11
12
14
15
16
15
13
11
11
11
13
16
16
16
14
Feels °C
13
13
13
15
13
13
10
10
9
11
12
14
15
13
10
9
9
9
12
13
13
14
12
  • 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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