Grunta Beach Surf Break

Lat Long: 51.18° N 4.22° W

Grunta Beach 48 hour detailed Surf Forecast

Issued: 12 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Grunta Beach sea temperature is
19.1° C
2.6° 

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


How big are the waves at Grunta Beach today (20 Aug):

  • Morning surf: Morning surf (20 Aug, local time) - 5ft (1.6m), 7s period with W swell.
  • Afternoon surf: Afternoon surf (20 Aug, local time) - 5ft (1.5m), 7s period with W swell.
  • Evening surf: Evening surf (20 Aug, local time) - 2.5ft (0.7m), 9s period with W swell.

The current surf forecast for Grunta Beach at 3AM is: 1.8m 8s primary swell from a West direction and 0.1m 15s secondary swell from a Southwest direction, 0.1m 16s secondary swell from a Southwest direction (forecast issued at 12:00am August 20). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (20 Aug)5ft (1.6m)7s
Afternoon (20 Aug)5ft (1.5m)7s
Evening (20 Aug)2.5ft (0.7m)9s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Wed night. Very mild (max 18°C on Sat afternoon, min 14°C on Thu night). Winds decreasing (fresh winds from the WSW on Wed night, light winds from the NNW by Sat afternoon).

Thursday
20
Friday
21
Saturday
22
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
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
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)
1.8
W
7
1.8
W
8
1.8
W
8
1.5
W
7
1.5
W
7
1.5
W
7
1.4
WNW
7
0.7
W
9
0.6
W
9
0.8
W
9
0.7
W
9
0.7
W
8
0.6
W
8
0.9
WNW
8
0.5
W
8
0.4
WSW
8
0.4
WSW
8
0.4
WSW
8
0.4
WSW
10
0.4
W
10
0.4
W
10
0.4
W
9
0.4
W
9
0.3
W
9
Wave Graph
Metric surfscale
Energy kJ
349
368
368
243
242
229
158
83
59
101
76
66
48
94
34
22
23
24
31
29
29
28
26
14
Wind (km/h)
25
W
30
WNW
25
WNW
30
WNW
30
WNW
30
WNW
30
NW
25
N
25
N
25
N
25
N
20
N
20
NNW
20
NW
20
NW
20
N
15
N
10
ENE
15
E
15
ENE
20
NE
15
N
5
NNW
20
NNE
Wind State
on
on
on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross
cross
off
off
off
cross-off
cross
cross-on
cross-off
High Tide
11:12PM7.55m
11:33AM7.18m
11:54PM6.94m
12:28PM6.65m
1:01AM6.42m
1:59PM6.38m
Low Tide
5:06AM2.63m
5:29PM2.87m
5:54AM3.20m
6:38PM3.39m
7:20AM3.61m
8:18PM3.55m
rain showers
rain showers
light rain
rain showers
cloud
clear
clear
clear
clear
part cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:29
8:27
8:24
 mm
1
1
1
1
Temp °C
17
16
16
16
16
16
17
16
15
14
14
14
15
16
16
16
15
15
15
16
16
18
18
17
Feels °C
13
11
12
11
11
11
11
11
10
10
10
10
11
12
12
12
12
13
12
13
12
14
17
13
  • 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 Grunta Beach 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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