Surf Forecasts:
Rivermouth surf forecast from 7 Sep 2026:
- Best quality surf: Sunday 13 Sep, 8AM (local time) - 7.5ft (2.3m), 8s period, E swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 5PM (local time) - 6ft (1.8m), 14s period, S swell with 1,281 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 2AM (local time) - 1.5ft (0.4m), 10s period with SSE 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 Thursday (Sep 10) at 2AM. The primary swell is predicted to be 0.4m and 10s period. 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 1.8m 14s and forecast to arrive on Monday (Sep 07) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 9s period and expected on Thursday (Sep 10) at 5AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 10th Sep) | 1.5ft (0.4m) 10s |
| Best Surf | 8AM (Sun 13th Sep) | 7.5ft (2.3m) 8s |
| Most Powerful | 5PM (Mon 7th Sep) | 6ft (1.8m) 14s |
Table - best surf conditions forecast for Rivermouth over the next 16 days.
The Lowdown
Alright, let’s break it down in feet and miles.
Rivermouth is the only spot in the game right now. It’s a bit of a slow start.
We’ve got a 7ft south groundswell with a 15-second period, and the energy is massive – 2224 units. The water is 65°F, which is a bit chilly for the season. The northeast wind is blowing cross-shore at 15 mph, making it lumpy and messy. Not great for the beginner-friendly Rivermouth. Honestly, this is better for kite surfing than paddling.
The swell drops fast. Monday afternoon is 6ft, Tuesday morning is 3ft, and by Wednesday it’s below 3ft. The wind stays cross-shore or cross-onshore, with a lot of chop. That stretch from Monday afternoon through Thursday the 10th is mostly a waste – small, weak, messy.
There’s a little spike on Thursday afternoon with a 4ft easterly swell, but the wind is still strong and cross-shore, so the quality is poor. Friday’s got a long-period 14-second swell from the south-southwest, but it’s tiny and onshore, so no good.
The first real standout is Sunday the 13th. The morning shows a 7ft swell from the east-southeast, and the wind drops to almost nothing. By afternoon, it goes glassy, with 6ft and clean conditions. That’s a solid window for Rivermouth. The swell period is a short 8 seconds, so it’ll be a bit crumbly, but that glassy wind will make it super fun.
Then, Monday the 14th is a wash again, but Tuesday the 15th morning is glassy with a 5ft easterly swell. Wednesday the 16th morning is also glassy with 4ft from the east. These are nice, clean, smaller days – great for a longboard.
The next big note is Friday the 18th. The swell jumps to 12ft from the southeast. That’s too big for Rivermouth, especially for beginners. It’s a powerful swell (1915 energy), but the wind is a cross-shore moderate breeze, so it’s a washing machine. Only for experts.
The final standouts are Saturday the 19th morning with an 8ft swell and cross-offshore wind, so it’s clean, but the swell is still big. And then Sunday the 20th morning is glassy with 6ft from the east-southeast – that’s a nice, clean, manageable size.
So, the best bet is Sunday the 13th afternoon with that glassy, 6ft swell. The second best is Tuesday the 15th and Wednesday the 16th mornings – smaller, but glassy and clean. That’s the pick of the run.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Wed morning, min 15°C on Mon night). Winds decreasing (fresh winds from the NE on Mon afternoon, calm by Wed night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Thu night. Warm (max 23°C on Thu morning, min 18°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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) | S 15 | S 14 | S 11 | SSE 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSW 14 | SSE 10 | E 10 | SSW 16 | SSW 14 | SSW 13 | SE 7 | E 7 | E 9 | ESE 8 | ESE 8 | ESE 8 | E 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2111 | 1281 | 229 | 198 | 98 | 108 | 58 | 32 | 39 | 18 | 262 | 288 | 136 | 98 | 321 | 168 | 275 | 489 | 574 | 522 | 919 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | on | cross-on | cross | cross | cross-on | cross | cross | glassy | cross-off |
High Tide | 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 | 4:56PM1.73m | ||||||||
Low Tide | 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 | 10:41AM-0.01m | 11:05PM0.06m | ||||||||
 |  |  | | |  | | | | | |  |  | | | |  | | | | | |
 | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — |
 | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 | — | — | — | — | — | — | 2 |
Temp °C | 19 | 20 | 17 | 27 | 26 | 22 | 30 | 27 | 23 | 23 | 23 | 20 | 19 | 19 | 18 | 21 | 21 | 20 | 25 | 25 | 25 |
Feels °C | 15 | 16 | 13 | 26 | 25 | 22 | 29 | 26 | 23 | 22 | 21 | 19 | 19 | 18 | 17 | 18 | 18 | 19 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | S 15 | S 14 | S 11 | E 8 | E 8 | E 9 | ENE 9 | E 9 | E 9 | ENE 9 | E 10 | E 9 | ENE 9 | ENE 9 | SE 6 | SSE 7 | SE 7 | ESE 8 | ESE 8 | ESE 8 | E 9 |
| kJ | 2111 | 1281 | 229 | 367 | 367 | 355 | 318 | 363 | 380 | 355 | 262 | 217 | 144 | 108 | 172 | 120 | 106 | 489 | 574 | 522 | 752 |
Swell 2 Height (m) Direction Period (s) | — | — | SSW 13 | SSE 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SW 18 | SSW 16 | S 5 | SSW 13 | E 9 | SSW 11 | S 11 | SSW 16 | SSW 16 | SSW 15 | SSW 14 |
| kJ | — | — | 229 | 198 | 98 | 108 | 58 | 32 | 39 | 18 | 84 | 288 | 27 | 98 | 81 | 42 | 62 | 256 | 452 | 309 | 204 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSE 12 | SSW 14 | SSW 12 | SSE 12 | SE 11 | SSW 14 | S 11 | SSW 12 | SSW 16 | SSW 16 | S 10 | S 10 | S 10 | — |
| kJ | — | — | — | 66 | 50 | 26 | 11 | 15 | 36 | 14 | 13 | 5 | 136 | 2 | 50 | 24 | 49 | 55 | 33 | 16 | — |
Wind waves Height (m) Direction Period (s) | ENE 5 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | SSW 4 | SSW 6 | SSW 5 | — | SSE 6 | SE 7 | E 7 | E 9 | ENE 9 | — | — | E 9 |
| kJ | 113 | 374 | 385 | 560 | 627 | 631 | 566 | 623 | 737 | 11 | 72 | 29 | — | 72 | 321 | 168 | 275 | 287 | — | — | 919 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 405 | 433 | 269 | 41 | 269 | 41 | 41 | 269 | 0 | 199 | 168 | 1 | 107 | 495 | 332 | 458 | 433 | 182 | 41 | 0 | 0 |
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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