Surf Forecasts:
Rivermouth surf forecast from 22 Aug 2026:
- Best quality surf: Sunday 23 Aug, 2AM (local time) - 10ft (3.0m), 10s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 8PM (local time) - 10ft (3.0m), 17s period, S swell with 4,241 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 2AM (local time) - 10ft (3.0m), 10s period with SW 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 Sunday (Aug 23) at 2AM. The primary swell is predicted to be 3.0m and 10s period with a secondary swell of 2.2m and 10s. Another secondary swell of 0.2m and 8s is also forecast. 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 3.0m 17s and forecast to arrive on Wednesday (Aug 26) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 10s period and expected on Saturday (Aug 29) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sun 23rd Aug) | 10ft (3.0m) 10s |
| Best Surf | 2AM (Sun 23rd Aug) | 10ft (3.0m) 10s |
| Most Powerful | 8PM (Wed 26th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Rivermouth over the next 16 days.
The Lowdown
Alright, surfers. Rusty here. Let’s break down what’s coming for Rivermouth. It’s not a straight shot, but there are a few windows that’ll fire.
The pattern starts quiet, with the first surf worth paddling out for not arriving until Sunday the 23rd. The real juice comes in the middle of the week, but it’s wind-challenged. Water temp is about normal for the season.
The first taste is on Sunday morning, August 23rd. Rivermouth is seeing a 7ft swell from the SSW, but a 20 km/h SW wind is putting a cross-chop on it. The combined energy is strong (1437), but the quality is poor. It’s a fight.
The good stuff builds on Tuesday, August 25th. The morning has a 5ft swell from the SSW with light cross winds. Energy is pumping (1080). The afternoon is the real standout. The swell hits 6ft from the SSW, with a super long 16-second period – that’s proper groundswell. Combined energy is very strong (1508). That long period at a river mouth will make for some beautiful, lined-up waves. It’s a beginner-friendly spot, so this is a great session. The wind is a light cross breeze, keeping it clean. Expect some company, as this spot can get crowded.
Wednesday, August 26th is a big wave day, but not for surfing. The morning brings a 8ft swell from the S with a massive 17-second period, and energy is through the roof (3020). But the wind is onshore and choppy. By the afternoon, it’s even bigger at 8ft, and the wind is stronger, making it a total mess. This is a better setup for kite surfing than paddle surfing.
The rest of the week fades. Thursday the 27th has strong cross winds. Friday the 28th brings a new 6ft East swell, but it’s short period (10 seconds) with cross winds. It’s marginal. The same holds for Saturday the 29th.
The second week is sketchy. The best chance is Thursday, September 3rd, morning. A 5ft swell from the SSW, with a good 15-second period, and strong energy (1001). The wind is a cross breeze from the NE at 20 km/h. It’s a look, but not a lock. Friday, September 4th, morning has a 6ft swell from the SSW and a 13-second period, with energy at 1174. The wind is cross again. Worth a look, but keep your expectations in check.
Signing off,
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Mon afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the WSW on Sat night, calm by Sun night). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Tue night. Warm (max 31°C on Fri morning, min 16°C on Tue night). Winds increasing (calm on Tue night, strong winds from the NE by Thu afternoon). | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SW 10 | SSW 10 | S 10 | S 10 | S 8 | S 11 | SSW 15 | SSW 15 | SSW 16 | SSW 15 | S 17 | S 17 | S 14 | S 12 | S 12 | E 9 | E 10 | E 10 | E 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 1679 | 871 | 506 | 326 | 112 | 198 | 675 | 1074 | 1500 | 1049 | 3020 | 4229 | 1894 | 625 | 750 | 904 | 605 | 627 | 602 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross-off | cross-on | cross-on | cross-off | cross | cross | glassy | cross-on | cross-on | cross | cross | cross | cross-off | cross | cross | cross |
High Tide | 00:55AM1.03m | 1:46PM1.05m | 1:49AM1.16m | 2:21PM1.19m | 2:24AM1.29m | 2:49PM1.34m | 2:53AM1.40m | 3:15PM1.47m | 3:20AM1.50m | 3:41PM1.58m | 3:47AM1.57m | 4:07PM1.67m | 4:14AM1.61m | ||||||
Low Tide | 7:32AM0.61m | 7:43PM0.62m | 8:09AM0.47m | 8:20PM0.49m | 8:37AM0.33m | 8:50PM0.36m | 9:03AM0.21m | 9:17PM0.25m | 9:28AM0.11m | 9:45PM0.15m | 9:53AM0.03m | 10:12PM0.08m | |||||||
 |  | | | | | | | |  |  |  |  |  | | | | | | |
 | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — |
 | 5:43 | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — |
mm | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 17 | 19 | 20 | 16 | 20 | 21 | 16 | 18 | 19 | 16 | 16 | 17 | 18 | 21 | 22 | 18 | 31 | 29 | 24 |
Feels °C | 10 | 15 | 16 | 16 | 18 | 19 | 16 | 16 | 16 | 15 | 16 | 15 | 14 | 16 | 17 | 13 | 29 | 28 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 10 | S 10 | S 10 | S 8 | S 11 | SSW 15 | SSW 15 | SSW 16 | SSW 15 | S 17 | S 17 | S 14 | S 12 | S 12 | E 9 | E 10 | E 10 | E 10 |
| kJ | 924 | 561 | 506 | 326 | 112 | 198 | 675 | 1074 | 1500 | 1049 | 3020 | 4229 | 1894 | 625 | 750 | 904 | 605 | 627 | 602 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 9 | SSW 13 | SSW 15 | SSE 12 | E 9 | E 9 | E 10 | — | — | — | SSW 13 | — | S 12 | S 12 | S 12 | S 11 |
| kJ | 5 | 5 | 5 | 6 | 60 | 44 | 13 | 6 | 2 | 2 | — | — | — | 356 | — | 566 | 480 | 330 | 198 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 12 | SW 11 | SSE 12 | E 10 | — | SE 12 | — | — | — | — | — | — | — | SSE 14 | SSE 15 | SSE 14 |
| kJ | — | — | — | 6 | 30 | 14 | 7 | — | 6 | — | — | — | — | — | — | — | 69 | 44 | 183 |
Wind waves Height (m) Direction Period (s) | SW 10 | SSW 10 | — | — | — | — | — | — | — | — | — | ESE 4 | ENE 5 | ENE 7 | ENE 8 | ENE 9 | — | ENE 10 | ENE 9 |
| kJ | 1679 | 871 | — | — | — | — | — | — | — | — | — | 15 | 109 | 457 | 1085 | 1591 | — | 1113 | 990 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 260 | 31 | 26 | 0 | 26 | 12 | 0 | 31 | 4 | 0 | 348 | 433 | 405 | 458 | 455 | 12 | 41 | 276 | 3 |
Best forecast wave conditions in Eastern Cape - Wild Coast | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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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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