Goukamma River Mouth Surf Break

Lat Long: 34.07° S 22.94° E

Goukamma River Mouth Surf Forecast and Surf Report

Issued: 7 pm 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Goukamma River Mouth sea temperature is
15.3°C
1.9° 

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


Goukamma River Mouth surf forecast from 24 Aug 2026:

  • Best quality surf: Monday 24 Aug, 8PM (local time) - 7ft (2.1m), 12s period, SW swell with glassy winds.
  • Most powerful swell: Tuesday 25 Aug, 8AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,746 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 5AM (local time) - 5.5ft (1.7m), 12s period with SW swell.

Best Forecast Surf Conditions for Goukamma River Mouth this week:

The surf forecast for Goukamma River Mouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 5AM. The primary swell is predicted to be 1.7m and 12s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Goukamma River Mouth in the next 16 days are 2.5m 14s and forecast to arrive on Tuesday (Aug 25) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Aug 29) at 2PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 24th Aug)5.5ft (1.7m) 12s
Best Surf 8PM (Mon 24th Aug)7ft (2.1m) 12s
Most Powerful 8AM (Tue 25th Aug)8ft (2.5m) 14s

Table - best surf conditions forecast for Goukamma River Mouth over the next 16 days.


The Lowdown

Alright, Rusty here, let's have a look at what's coming up at Goukamma River Mouth.

The next couple of weeks have a bit of a mixed bag. We’ve got some solid swell on the way, but the wind is going to be the main character in this story, and it’s not always going to be a friendly one. The water temp is sitting pretty average for this time of year, so no surprises there.

The first real chance to get wet is on Monday the 24th. It's not a world-beater, with a 5ft SW swell running at a 12-second period. The combined energy is moderate (723), but the wind is a light cross-on, so it'll be a bit bumpy. It's a start.

Things start to look a bit more promising by Tuesday the 25th. The swell is on the rise, hitting 8ft from the SW with a much longer 14-second period, giving it proper groundswell grunt and a combined energy of 2533 (strong). This is proper river mouth swell, but it’s a bit on the bigger side for the average punter. The morning onshore wind will mess it up, but the afternoon is a little better.

Now, Thursday the 27th is the standout this week. The morning is glassy, absolutely glassy, with a WSW wind and a clean 6ft SSW swell. The period is a solid 12 seconds, and the combined energy is still a strong 1469. This is the session to circle. The wave comment says "excellent surf conditions for experienced surfers," and I’d agree. The afternoon stays glassy with a smaller 5ft S swell. That’s your best bet for a clean, long wall.

The end of the first week and into the second gets messy. The wind swings around and picks up, with a lot of cross-shore and cross-onshore chop. Saturday the 29th has a brief moment of offshore NNW wind in the morning, but the swell is tiny at 3ft. It’s clean, but small.

The real magic, if you can wait for it, looks like Wednesday the 2nd of September. The morning is clean, with a light cross-offshore NW wind and a solid 7ft SW swell at 12 seconds. The combined energy is a strong 1296. The wave comment calls it "excellent surf conditions for experienced surfers," and that’s a fair call. It’s a proper session for those who can handle it.

After that, the window closes. The swell gets too big for comfort, hitting 10ft on the 4th and 6th of September, and the wind goes straight to hell. The 6th of September is a big, dangerous day with a 10ft SW swell and a 13-second period, packing a massive 6464 in combined energy. That’s a lifetime of energy for a river mouth, and it’s frankly too big for anyone but the absolute nuts on a jet ski. The wind is onshore too, so it’s a no-go.

So, to sum it up: Thursday morning the 27th of August and Wednesday morning the 2nd of September are your two real standouts. The first is glassy and clean, the second is a bigger, cleaner groundswell. Both are for experienced surfers. The rest is either blown out, too small, or too big. Get on it while you can.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Wed afternoon, min 11°C on Mon night). Winds increasing (calm on Mon night, fresh winds from the E by Wed afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 33°C on Fri night, min 14°C on Wed night). Winds decreasing (fresh winds from the E on Wed night, calm by Thu night).

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
2
3
4
3
3
4
2
1
4
4
4
4
2
1
2
2
0
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
SW
12
1.6
SW
12
1.6
SW
11
2.4
SW
14
2.3
SW
14
2.5
SW
14
2.3
SW
14
2.1
S
12
1.6
SSW
16
2
SSW
12
1.9
SSW
12
1.4
S
12
1.7
S
11
1.4
S
11
1.2
S
11
1.2
S
11
0.9
SSE
11
0.9
SW
13
2.2
SW
9
Wave Graph
Metric surfscale
Energy kJ
1003
638
652
2323
1837
2509
1858
1292
1180
1197
985
544
759
476
335
351
205
245
783
Wind (km/h)
5
N
5
SW
5
S
0
NNW
5
S
10
SSE
10
NE
25
E
35
E
10
NE
5
SW
5
E
0
NNW
5
E
15
E
25
NNW
25
NNW
15
SW
15
W
Wind State
glassy
cross-on
on
glassy
on
cross-on
cross-off
cross
cross
cross-off
glassy
glassy
glassy
cross
cross
off
off
cross-on
cross-off
High Tide
1:41AM1.29m
2:11PM1.34m
2:15AM1.43m
2:39PM1.49m
2:44AM1.55m
3:06PM1.63m
3:12AM1.65m
3:32PM1.75m
3:40AM1.72m
3:59PM1.84m
4:08AM1.76m
4:26PM1.89m
4:37AM1.76m
Low Tide
8:02AM0.49m
8:15PM0.51m
8:30AM0.35m
8:44PM0.38m
8:56AM0.23m
9:11PM0.26m
9:21AM0.12m
9:39PM0.16m
9:46AM0.05m
10:07PM0.09m
10:13AM0.01m
10:35PM0.06m
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:56
6:54
6:54
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:02
6:04
6:04
6:05
6:06
6:06
6:07
 mm
Temp °C
13
16
16
12
14
15
13
17
18
15
21
22
21
24
27
33
32
33
17
Feels °C
13
15
15
12
13
14
12
13
12
10
21
21
20
22
25
27
27
28
16
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Goukamma River Mouth Surf forecast

The above surf forecast table for Goukamma River Mouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Goukamma River Mouth can be found by selecting the local surf guide option on the grey menu. Our Goukamma River Mouth surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Goukamma River Mouth) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Goukamma River Mouth may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Garden Route? If you are looking for accommodation near Goukamma River Mouth, camping, hotels and holiday cottages in Garden Route, consider staying in Knysna which is 10 km (6 miles) away. Other places in and around Garden Route where you can find information about places to rent, and car hire include Plettenberg Bay which is 39 km (24 miles) away, George, Mossel Bay and Oudtshoorn.

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