Grunta Beach Surf Break

Lat Long: 51.18° N 4.22° W

Grunta Beach 48 hour detailed Surf Forecast

Issued: 6 pm 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Grunta Beach sea temperature is
18.9° C
2.4° 

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 (21 Aug):

  • Afternoon surf: Afternoon surf (21 Aug, local time) - 2.5ft (0.8m), 8s period with WNW swell.
  • Evening surf: Evening surf (21 Aug, local time) - 1.5ft (0.4m), 8s period with WSW swell.

The current surf forecast for Grunta Beach at 11PM is: 0.4m 8s primary swell from a West direction and 0.6m 4s secondary swell from a West-northwest direction (forecast issued at 06:00pm August 21). The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (21 Aug)--
Afternoon (21 Aug)2.5ft (0.8m)8s
Evening (21 Aug)1.5ft (0.4m)8s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Fri afternoon. Warm (max 20°C on Sun afternoon, min 14°C on Fri night). Mainly fresh winds.

Fri
21
Saturday
22
Sunday
23
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
WNW
8
0.4
WSW
8
0.4
WSW
8
0.4
W
8
0.4
WSW
8
0.4
WSW
10
0.4
W
10
0.4
WSW
10
0.4
W
9
0.4
W
9
0.3
W
9
0.3
W
9
0.3
W
9
0.3
W
9
0.3
W
9
0.2
W
9
0.2
WSW
13
0.2
WSW
12
0.3
WSW
11
Wave Graph
Metric surfscale
Energy kJ
90
22
22
22
24
31
29
31
28
26
14
14
14
14
14
8
18
14
22
Wind (km/h)
20
WNW
15
W
15
NE
20
ENE
20
ENE
15
ENE
15
ENE
15
NNE
15
NNW
20
NNW
20
N
10
NNE
10
E
15
E
20
ENE
20
NE
15
N
10
N
5
ESE
Wind State
on
on
cross-off
off
cross-off
off
cross-off
cross-off
cross
cross
cross
cross-off
off
off
off
cross-off
cross-off
cross
glassy
High Tide
1:01AM6.42m
1:59PM6.38m
2:41AM6.29m
3:35PM6.63m
Low Tide
6:38PM3.39m
7:20AM3.61m
8:18PM3.55m
9:06AM3.53m
9:45PM3.23m
clear
rain showers
rain showers
part cloud
clear
clear
clear
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>
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:27
8:24
8:22
 mm
1
1
Temp °C
16
16
16
16
15
14
15
16
17
17
16
15
15
14
15
17
20
20
19
Feels °C
12
13
13
12
12
11
12
13
14
13
12
13
13
11
12
13
16
16
18
  • 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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