Surf Forecasts:
Rivermouth surf forecast from 6 Sep 2026:
- Best quality surf: Sunday 6 Sep, 11PM (local time) - 10ft (3.0m), 18s period, S swell with cross-onshore winds.
- Most powerful swell: Monday 7 Sep, 2AM (local time) - 10ft (3.0m), 17s period, S swell with 5,516 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 11PM (local time) - 10ft (3.0m), 18s period with S 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 (Sep 06) at 11PM. The primary swell is predicted to be 3.0m and 18s period with a secondary swell of 0.7m and 9s. Another secondary swell of 0.7m and 4s is also forecast. The wind is predicted to be cross-onshore 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 Monday (Sep 07) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Sunday (Sep 13) at 8AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 6th Sep) | 10ft (3.0m) 18s |
| Best Surf | 11PM (Sun 6th Sep) | 10ft (3.0m) 18s |
| Most Powerful | 2AM (Mon 7th Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what Rivermouth has in store for the next couple of weeks.
The start of the run is pretty rough. A few days of messy wind and poor conditions, so you’re not missing much. Things turn around on the 13th of September, and that’s where we get our first real standout.
Sunday 13th September is your best bet. Early morning is glassy with a solid 8ft east swell rolling in. The energy is moderate (1423) and the period is 9 seconds, so there’s some shape to work with. The wind is light offshore from the southwest, keeping things clean. This one is for experienced surfers – that size means it’s not a beginner wave. The afternoon cleans up with a cross-off breeze and still 7ft east swell. Crowds can be a factor here sometimes, but on a Sunday with this quality, you’ll want to be in the water early.
After that, the middle of the week gets a bit messy again with onshore winds and smaller surf. But if you’ve got patience, Saturday 19th September brings a huge pulse of energy. The combined energy hits 4099 in the morning with an 12ft south-southeast swell. That’s strong. The morning is glassy, calm wind, and the tide is favourable, but the data says it’s too big for this break. Experts only. By the afternoon it’s 13ft, still cross-shore, same story.
Then Monday 21st September morning shapes up nicely – glassy conditions with an 8ft southeast swell and moderate energy of 1160. Again, for experienced surfers, but clean and lined up.
The water is sitting around 65°F, which is a bit colder than usual for this time of year. Not crazy cold, but you’ll want a decent wetsuit.
So aim for the 13th or the 21st. The big days around the 19th are for the brave and the expert crew.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun morning. Warm (max 27°C on Tue morning, min 16°C on Sun afternoon). Winds decreasing (fresh winds from the NE on Mon afternoon, light winds from the NNE by Tue night). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Fri night. Warm (max 31°C on Wed morning, min 18°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
AM | PM | 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) | SSW 23 | SSW 20 | S 17 | S 15 | S 14 | S 11 | E 9 | E 9 | SSE 10 | S 10 | SSE 10 | E 9 | SSW 6 | SSW 17 | SSW 15 | SSW 14 | SE 7 | ESE 7 | ESE 7 | ESE 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 623 | 1786 | 5516 | 1924 | 1281 | 229 | 432 | 452 | 85 | 51 | 31 | 275 | 47 | 119 | 405 | 223 | 183 | 396 | 512 | 669 | 1009 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross |
High Tide | 12:17PM1.05m | 00:50AM1.17m | 1:31PM1.24m | 1:49AM1.33m | 2:17PM1.44m | 2:31AM1.46m | 2:54PM1.60m | 3:07AM1.56m | 3:27PM1.72m | 3:40AM1.62m | 3:59PM1.78m | 4:11AM1.64m | 4:28PM1.78m | 4:40AM1.62m | |||||||
Low Tide | 6:28PM0.59m | 7:15AM0.46m | 7:42PM0.42m | 8:03AM0.29m | 8:27PM0.26m | 8:40AM0.14m | 9:05PM0.13m | 9:13AM0.03m | 9:38PM0.04m | 9:44AM-0.03m | 10:09PM0.00m | 10:13AM-0.04m | 10:38PM0.01m | ||||||||
 |  |  |  |  |  | | | | | | | | |  | | |  | | |  | |
 | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 7 | — | — | — |
Temp °C | 17 | 17 | 17 | 20 | 20 | 17 | 27 | 25 | 23 | 31 | 29 | 24 | 21 | 20 | 19 | 19 | 19 | 18 | 22 | 22 | 20 |
Feels °C | 15 | 15 | 15 | 16 | 16 | 13 | 26 | 24 | 23 | 31 | 29 | 25 | 19 | 19 | 19 | 18 | 18 | 16 | 19 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | S 10 | SSW 20 | S 17 | S 15 | S 14 | S 11 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | ENE 9 | SSW 15 | SSE 7 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 16 |
| kJ | 204 | 1786 | 5516 | 1924 | 1281 | 229 | 432 | 452 | 363 | 318 | 326 | 275 | 169 | 138 | 405 | 79 | 138 | 81 | 111 | 126 | 669 |
Swell 2 Height (m) Direction Period (s) | SSW 23 | S 10 | E 9 | — | — | SSW 13 | SSE 11 | SSE 10 | SSE 10 | S 10 | SSE 10 | SSE 9 | SSE 9 | SSW 17 | S 6 | SSW 14 | SE 13 | SE 15 | SE 13 | SSW 19 | SSE 8 |
| kJ | 623 | 198 | 61 | — | — | 229 | 198 | 110 | 85 | 51 | 31 | 17 | 17 | 119 | 47 | 223 | 7 | 8 | 7 | 74 | 53 |
Swell 3 Height (m) Direction Period (s) | E 10 | S 13 | — | — | — | — | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSE 12 | SW 13 | SSW 12 | SSE 9 | ENE 9 | E 10 | — | SE 12 | S 22 | SSW 16 | S 10 |
| kJ | 108 | 121 | — | — | — | — | 66 | 50 | 27 | 11 | 13 | 46 | 15 | 8 | 108 | 115 | — | 6 | 9 | 49 | 80 |
Wind waves Height (m) Direction Period (s) | ESE 4 | E 10 | E 9 | E 6 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | SW 4 | SSW 6 | SSW 5 | — | — | SE 7 | ESE 7 | ESE 7 | ESE 8 | E 8 |
| kJ | 34 | 204 | 240 | 217 | 385 | 416 | 699 | 657 | 631 | 749 | 525 | 8 | 47 | 25 | — | — | 183 | 396 | 512 | 669 | 1009 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 511 | 433 | 399 | 405 | 455 | 121 | 41 | 269 | 0 | 12 | 121 | 1 | 32 | 31 | 31 | 383 | 383 | 435 | 433 | 433 | 103 |
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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