Surf Forecasts:
Rivermouth surf forecast from 8 Sep 2026:
- Best quality surf: Monday 14 Sep, 8PM (local time) - 10ft (3.0m), 10s period, E swell with cross-shore winds.
- Most powerful swell: Monday 14 Sep, 5PM (local time) - 10ft (3.0m), 10s period, E swell with 1,738 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 5AM (local time) - 2ft (0.6m), 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 Wednesday (Sep 09) at 5AM. The primary swell is predicted to be 0.6m 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 3.0m 10s and forecast to arrive on Monday (Sep 14) 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 2.1m 9s period and expected on Thursday (Sep 10) at 5AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 9th Sep) | 2ft (0.6m) 10s |
| Best Surf | 8PM (Mon 14th Sep) | 10ft (3.0m) 10s |
| Most Powerful | 5PM (Mon 14th Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming up for Rivermouth.
To be honest, the next week and a half are a bit of a write-off. There’s some swell showing, but it’s almost always paired with messy wind or poor conditions. The first real glimmer of something decent doesn’t show up until Monday the 21st of September. So, we’re looking at a long stretch of average-to-poor surf from now until then.
The first bit of action on the 21st is the standout. Rivermouth is a beginner-friendly spot, very consistent, and it’s exposed to the south. On Monday morning, we’ve got a solid 7ft swell from the SSW, with a super long period of 20 seconds. The combined energy is a hefty 3163, so there’s plenty of grunt in the water. The wind is light and cross from the SSW, which is going to keep things clean. This is a proper groundswell, and that long period will mean longer waits between sets, but the waves will have real shape. It’s not too big for the average surfer, but it’s got power. The afternoon holds up too, with 7ft from the same direction, a period of 19 seconds, and even lighter wind – almost glassy. Energy jumps to 3560. That Monday is the clear pick, but it’s a long way out, so don’t lock it in just yet.
Water temps at Rivermouth are sitting at 64°, which is a bit colder than normal for this time of year.
The next morning, Tuesday the 22nd, still has some decent leftovers. The swell drops to 5ft from the SSW, period at 15 seconds, and energy at 1410. Wind is light and cross from the NE. It’s a step down from Monday, but still a fun option if you missed the peak.
After that, things fade back into mediocrity. The second week is mostly small and messy, with a few sessions of small SSW swell but often with onshore breezes. It’s not really worth getting excited about.
So, bottom line: suffer through the next week-plus, then circle Monday the 21st of September. That’s the one to aim for. It’s a long-range call, but the numbers look promising.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri morning. Warm (max 31°C on Wed morning, min 19°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon morning, min 17°C on Fri night). Winds increasing (light winds from the ENE on Fri night, fresh winds from the ENE by Mon morning). | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 10 | SSE 10 | E 9 | SSE 10 | SW 14 | E 9 | SSW 18 | SSW 16 | SSW 14 | SSW 13 | E 9 | ENE 5 | E 6 | SSW 17 | SSW 16 | E 8 | E 8 | E 9 | E 10 | E 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 98 | 110 | 311 | 32 | 46 | 235 | 121 | 348 | 173 | 96 | 85 | 77 | 263 | 433 | 520 | 638 | 461 | 985 | 1738 | 792 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross | cross |
High Tide | 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 | 5:07AM1.56m | 5:23PM1.64m | |||||||
Low Tide | 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 | 11:08AM0.06m | 11:31PM0.14m | |||||||
 |  | |  |  | | |  |  |  | | | | | | | | | | | |
 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — |
 | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 21 | 31 | 30 | 24 | 22 | 23 | 19 | 19 | 19 | 17 | 21 | 21 | 20 | 22 | 22 | 20 | 23 | 24 | 21 |
Feels °C | 24 | 21 | 29 | 28 | 24 | 21 | 21 | 18 | 19 | 18 | 17 | 19 | 18 | 19 | 22 | 21 | 21 | 20 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | E 8 | ENE 8 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | S 7 | SSE 8 | SSE 8 | SSW 17 | SSW 16 | E 8 | E 8 | SSW 13 | SSW 13 | E 10 |
| kJ | 316 | 290 | 311 | 326 | 318 | 235 | 173 | 141 | 115 | 86 | 68 | 64 | 50 | 433 | 520 | 428 | 461 | 137 | 92 | 792 |
Swell 2 Height (m) Direction Period (s) | S 10 | SSE 10 | SSE 10 | SSE 10 | SE 10 | SSW 12 | SSW 18 | SSW 16 | SSW 14 | S 7 | E 9 | S 11 | S 11 | S 10 | S 10 | SSW 15 | SSW 14 | — | SW 13 | ESE 11 |
| kJ | 98 | 110 | 58 | 32 | 26 | 30 | 121 | 348 | 173 | 52 | 85 | 63 | 61 | 54 | 31 | 456 | 285 | — | 170 | 452 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 11 | SSE 12 | SW 14 | SSE 10 | SSE 12 | SE 11 | S 6 | SSW 13 | SSW 12 | SW 15 | SSW 15 | SE 7 | — | — | — | — | — | SSW 12 |
| kJ | 50 | 26 | 11 | 15 | 46 | 18 | 13 | 5 | 17 | 96 | 82 | 9 | 43 | 27 | — | — | — | — | — | 45 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | SW 4 | SSW 6 | SSW 5 | — | — | ENE 3 | ENE 5 | E 6 | E 7 | E 8 | E 8 | — | E 9 | E 10 | SW 4 |
| kJ | 560 | 516 | 576 | 566 | 589 | 21 | 99 | 14 | — | — | 3 | 77 | 263 | 275 | 371 | 638 | — | 985 | 1738 | 8 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 269 | 3 | 41 | 269 | 0 | 166 | 31 | 31 | 31 | 41 | 103 | 433 | 433 | 293 | 433 | 433 | 433 | 276 | 260 | 27 |
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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