Rivermouth Surf Break

Lat Long: 32.86° S 28.11° E

Rivermouth Surf Forecast and Surf Report

Issued: 7 pm 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rivermouth sea temperature is
18.9°C
0.9° 

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


Rivermouth surf forecast from 25 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 2PM (local time) - 10ft (3.0m), 17s period, S swell with cross-onshore winds.
  • Most powerful swell: Wednesday 2 Sep, 2AM (local time) - 13ft (4.0m), 14s period, SSW swell with 5,480 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 26 Aug, 2AM (local time) - 4.5ft (1.4m), 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 Wednesday (Aug 26) at 2AM. The primary swell is predicted to be 1.4m and 14s period with a secondary swell of 0.6m and 18s. 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 4.0m 14s and forecast to arrive on Wednesday (Sep 02) at 2AM. 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 9s period and expected on Thursday (Aug 27) at 11PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 26th Aug)4.5ft (1.4m) 14s
Best Surf 2PM (Wed 26th Aug)10ft (3.0m) 17s
Most Powerful 2AM (Wed 2nd Sep)13ft (4.0m) 14s

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


The Lowdown

Alright, mate. Rusty here. Let’s have a look at what we’ve got coming down the line for this stretch.

The wave show at Rivermouth is pretty much hitting a dead stop for a few days before things get interesting. We start on Wednesday morning the 26th of August with a solid 8 ft south groundswell, period way up at 17 seconds. That’s a lot of energy in the water (3734), and it's only for the experienced crew. Problem is, there’s a light cross-onshore breeze messing with the surface, so it’s not as clean as we’d like. Water temps are about what you'd expect for this time of year.

Thursday the 27th drops off fast. The swell drops to 5 ft and the wind swings cross-shore, fresh and lumpy. The score is low and the conditions are poor, so it’s a day to skip.

Friday the 28th, things perk up a bit. Morning session with a clean 6 ft east swell, period short at 10 seconds. The wind is light and cross-offshore, making for some tidy waves. This is the first real standout for the period – good for a few hours of fun before it fades out in the afternoon. Consistency is high, but don't expect perfection all day.

Saturday the 29th still has some clean 6 ft east swell in the morning with a gentle breeze, but it's dropping off by the afternoon into a small 3 ft south-southeast swell with cross-chop. Not your best window.

Then we hit a gap from Sunday the 30th of August right through to the end of the first week. The wind picks up strong, the swell mix gets messy, and the ratings tank. There are a few glassy mornings around Monday the 31st and Tuesday the 1st of September, but the swell is tiny (3 ft to 4 ft) and the energy is weak. It’s barely rideable.

After that, the real standout appears on Wednesday the 2nd of September. A solid 8 ft south-southwest groundswell with a long 15-second period rolls in. The combined energy is pumping at 3087, the wind turns cross-offshore, and it cleans right up. This is a big swell, so it's for experienced surfers only – too much for beginners. The period is long, so it might wall up on the bank, but the quality is there for the right crew.

Friday the 4th of September is a warning sign. That south swell jacks up to 12 ft, with energy in the thousands (2575), and the wind is light and favorable. But the report says it’s simply too big for Rivermouth. If you’re an expert with a big-wave gun, maybe, but for most, it’s a miss.

The swell cranks even bigger that weekend. Saturday the 5th and Sunday the 6th see 10 ft to 13 ft south-southeast swell, periods around 12 to 14 seconds, and strong cross-winds. Again, the break is marked as too big, so this is strictly for the elite or for watching from the beach. That kind of size and power (5890 on Sunday) is more in kite-surfing territory than paddle surfing for most.

The second week fades into poor, messy wind and dropping swell. Not much to call home about. The energy stays low and the wind is mostly on or cross-shore with chop.

So, to sum it up: Friday morning the 28th of August is your first clean, fun window for intermediate surf. The big standout to mark on your calendar is Wednesday morning the 2nd of September for the crew who charge.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Tue night. Warm (max 34°C on Fri morning, min 16°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the ENE by Thu afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 32°C on Sat morning, min 13°C on Sun night). Winds decreasing (fresh winds from the SW on Sun morning, calm by Mon morning).

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
4
0
1
1
1
2
4
1
2
2
0
0
0
0
3
2
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SSW
14
2.5
S
17
3
S
16
2.2
S
14
1.6
S
12
1.6
S
12
1.4
S
12
1.7
E
10
1.1
S
12
1
S
11
1.7
E
10
0.8
SSE
11
0.6
S
11
1.2
E
10
1.7
SSW
7
1.6
SW
8
1.2
SW
7
0.8
E
10
0.8
E
10
Wave Graph
Metric surfscale
Energy kJ
763
3734
4034
1733
772
784
575
539
322
256
596
167
86
290
262
329
143
115
120
Wind (km/h)
10
WSW
10
E
20
ENE
30
NE
35
NE
30
NE
15
NNE
10
N
10
ENE
15
NNE
15
NNE
15
ENE
30
WSW
40
SW
25
SW
15
W
5
SSE
10
E
10
NNE
Wind State
cross-off
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross
cross-off
cross-off
cross
cross-off
cross
cross-off
cross-off
glassy
cross-on
cross-off
High Tide
2:53AM1.40m
3:15PM1.47m
3:20AM1.50m
3:41PM1.58m
3:47AM1.57m
4:07PM1.67m
4:14AM1.61m
4:34PM1.73m
4:42AM1.62m
5:01PM1.74m
5:11AM1.59m
5:30PM1.71m
Low Tide
8:50PM0.36m
9:03AM0.21m
9:17PM0.25m
9:28AM0.11m
9:45PM0.15m
9:53AM0.03m
10:12PM0.08m
10:19AM-0.01m
10:41PM0.05m
10:46AM-0.02m
11:10PM0.05m
11:14AM0.01m
11:40PM0.09m
rain showers
light rain
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:31
6:30
6:28
6:28
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:45
5:45
5:46
5:47
5:47
5:49
 mm
1
1
Temp °C
17
17
18
18
22
25
22
34
31
26
32
32
22
20
16
15
18
19
15
Feels °C
16
16
15
14
18
20
19
31
30
23
29
30
21
14
10
11
16
16
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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