Rivermouth Surf Break

Lat Long: 32.86° S 28.11° E

Rivermouth Surf Forecast and Surf Report

Issued: 7 pm 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Rivermouth sea temperature is
15.1°C
4.6° 

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


Rivermouth surf forecast from 10 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 11PM (local time) - 10ft (3.0m), 9s period, E swell with cross-shore winds.
  • Most powerful swell: Monday 14 Sep, 11AM (local time) - 11ft (3.5m), 10s period, E swell with 1,997 kJ wave energy.
  • Next surfable swell (1★+): Friday 11 Sep, 8AM (local time) - 2.5ft (0.7m), 14s period with SSW swell.

Best Forecast Surf Conditions for Rivermouth this week:

The surf forecast for Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 8AM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.5m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Rivermouth in the next 16 days are 3.5m 10s and forecast to arrive on Monday (Sep 14) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 10s period and expected on Monday (Sep 14) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 11th Sep)2.5ft (0.7m) 14s
Best Surf11PM (Sun 13th Sep)10ft (3.0m) 9s
Most Powerful11AM (Mon 14th Sep)11ft (3.5m) 10s

Table - best surf conditions forecast for Rivermouth over the next 16 days.


The Lowdown

Alright, here's the deal. For the next couple days, you're looking at some blown-out, lumpy conditions. The wind is gonna be messing with the waves, making for a real struggle session. Friday and Saturday are pretty average, so you might as well find something else to do unless you're desperate to get wet.

Keep your eyes on the horizon though, because Monday the 14th is when a big, powerful pulse of energy pushes in. Rivermouth is going to be firing, but it's going to be too big. We're looking at swell heights around 12 feet with a strong 3584 energy reading. That's a lot of water moving. The period is 10 seconds, which for a beach break like this can make it break too straight and heavy. It's a beast of a day and only for the most experienced. But, there is a window on Monday afternoon when the wind drops off to dead glassy. The swell backs down slightly to around 10 feet, and while it's still big, it will be a lot cleaner. Still, that's expert territory.

From Tuesday the 15th to Saturday the 19th, we hit a bit of a flat, messy patch. Swell drops into the 5-6 foot range, but it's riddled with cross and cross-onshore winds, making the surface choppy and messy. It's not going to be worth getting too excited about. You might get a couple of so-so ones, but there's no quality to be found.

Now, for the standout. Mark your calendar for Sunday the 20th. The swell kicks back in with a solid 6 feet from the SSW, but the real magic is the period – a massive 18 seconds. This is true groundswell, and the energy is right up there at 2260. This long period means the waves will have real power and shape. With light winds in the morning, you're looking at some clean, lined-up sets. This is your session. Rivermouth will be handling this beautifully, as it can really focus that long-period energy.

The week after that starts off with a bit of leftover energy on the 21st, but the wind is not as kind. Then on the 22nd and 23rd, the wind swings offshore, but it gets way too strong, blowing 30-40 mph. It's clean, but it's howling and the swell drops. It's more of a wind sport day than a surf day.

The last few days, from the 24th on, are pretty forgettable. The swell eases and the wind stays cross-shore. There's a slight bump on the 25th with a 13-14 second period, but the quality won't be there.

So, to sum it up: The best waves are on Sunday the 20th. Make a plan for it. Monday the 14th is huge and heavy, only for the experts. Don't waste too much time on the rest.

Rusty.

Short Range Forecast

Light rain (total 5mm), mostly falling on Fri night. Warm (max 22°C on Sat morning, min 18°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 10mm), heaviest on Mon afternoon. Warm (max 23°C on Mon afternoon, min 16°C on Wed afternoon). Winds increasing (calm on Mon afternoon, fresh winds from the SSW by Wed afternoon).

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
0
0
0
0
!
!
!
4
2
2
3
0
0
2
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
SSW
16
0.6
SSW
14
0.5
SSW
13
1.3
ESE
7
1.3
E
6
1.5
E
7
0.9
SSW
18
2.3
ESE
8
2.5
ESE
9
3
E
9
3.5
E
10
3
E
10
2.2
E
11
1.8
E
10
1.7
E
10
1.4
E
10
1.1
E
10
2
SSW
7
1.8
S
8
Wave Graph
Metric surfscale
Energy kJ
273
131
96
183
128
193
565
672
975
1476
1997
1792
1069
661
578
379
230
389
398
Wind (km/h)
15
SW
15
SSW
10
E
20
NE
20
ENE
25
ENE
25
ENE
20
ENE
25
ENE
15
NE
25
NE
5
NNE
0
WNW
5
SSE
10
E
10
NNE
30
SW
25
SSW
10
SSE
Wind State
cross
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
glassy
glassy
cross-on
cross-on
cross-off
cross
cross
on
High Tide
3:40AM1.62m
3:59PM1.78m
4:11AM1.64m
4:28PM1.78m
4:40AM1.62m
4:56PM1.73m
5:07AM1.56m
5:23PM1.64m
5:34AM1.47m
5:48PM1.52m
5:59AM1.36m
6:12PM1.38m
Low Tide
9:38PM0.04m
9:44AM-0.03m
10:09PM0.00m
10:13AM-0.04m
10:38PM0.01m
10:41AM-0.01m
11:05PM0.06m
11:08AM0.06m
11:31PM0.14m
11:34AM0.17m
11:56PM0.25m
12:00PM0.29m
00:22AM0.37m
part cloud
part cloud
cloud
light rain
part cloud
part cloud
thunderstorm
thunderstorm
cloud
light rain
cloud
rain showers
mod rain
part cloud
part cloud
clear
cloud
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:11
6:09
6:07
6:07
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:54
5:55
5:57
5:57
5:58
5:58
5:59
 mm
2
1
2
1
2
6
1
5
Temp °C
20
21
20
18
22
21
20
20
21
21
22
23
21
22
23
19
19
18
16
Feels °C
19
20
20
18
21
19
19
20
20
22
21
22
23
22
22
19
14
12
13
  • Map Icons:
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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 Rivermouth Surf forecast

The above surf forecast table for Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Rivermouth 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 (Rivermouth) 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 Rivermouth 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 Eastern Cape - Wild Coast? If you are looking for accommodation near Rivermouth, camping, hotels and holiday cottages in Eastern Cape - Wild Coast, consider staying in East London which is 26 km (16 miles) away. Other places in and around Eastern Cape - Wild Coast where you can find information about places to rent, and car hire include Butterworth which is 59 km (37 miles) away, Stutterheim and Bisho.

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