Surf Forecasts:
Rivermouth surf forecast from 10 Aug 2026:
- Best quality surf: Saturday 15 Aug, 11PM (local time) - 4.5ft (1.3m), 11s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 11AM (local time) - 7ft (2.2m), 10s period, S swell with 1,026 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 2AM (local time) - 5ft (1.6m), 8s period with E 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 Saturday (Aug 15) at 2AM. The primary swell is predicted to be 1.6m and 8s period with a secondary swell of 0.3m and 15s. 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 2.2m 10s and forecast to arrive on Tuesday (Aug 11) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 11s period and expected on Sunday (Aug 16) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sat 15th Aug) | 5ft (1.6m) 8s |
| Best Surf | 11PM (Sat 15th Aug) | 4.5ft (1.3m) 11s |
| Most Powerful | 11AM (Tue 11th Aug) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Rivermouth over the next 16 days.
The Lowdown
Alright, let’s break it down. For the next two weeks at Rivermouth, the water is sitting at about 64°, which is a few degrees colder than what’s normal for this time of year, so a thicker wetsuit is the call.
Monday afternoon kicks off with a small 4ft swell from the SE, short period around 8 seconds, and weak energy at 412. The cross-on wind from the SSE isn’t helping. Tuesday has a bit more size but the wind is up and conditions are poor.
We’re looking at a run of average to poor surf through the rest of this week. The winds are stubbornly cross-shore, and the swell is mostly small and short-period. Energy drops into the low hundreds, sometimes below 400. Not a time to get stoked.
Saturday afternoon the 15th offers a first real hint of something. Swell picks up to 6ft from the E with a longer 12-second period, giving moderate energy (1316). The wind is light, so it’ll be a bit more fun, but still not glassy clean. Swell direction isn’t optimum for this spot.
The standout is Thursday morning the 20th. The wind goes glassy, and we’ve got a 6ft east swell, even though the period is short at 6 seconds. The energy is moderate (579), and the conditions are about as clean as it gets. That glassy wind makes it a real gem for a morning session.
Then things get serious. Friday the 21st and Saturday the 22nd bring massive swell – 13ft to 15ft from the SE with very long 12-second periods and huge energy readings over 4000 and even 6000. That’s powerful, groundswell, but it’s just too big for Rivermouth. The forecast says it’s too big for this break. Winds are strong and cross-shore, so paddle surfing is out. Might be a kite session instead.
The final days drop back to smaller surf, but the winds stay cross-shore or onshore, and the energy is moderate. Nothing else stands out after Thursday the 20th.
The best call? Thursday morning the 20th. Glassy, 6ft east swell, and clean. It’s the pick of the 16 days.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Mon afternoon. Very mild (max 18°C on Thu morning, min 13°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sun morning, min 13°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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) | SE 8 | S 10 | S 10 | SSW 13 | ESE 9 | E 10 | E 10 | E 10 | E 9 | SSW 20 | SSW 18 | E 7 | E 7 | E 8 | E 8 | E 12 | E 11 | E 12 | E 11 | E 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 188 | 562 | 1026 | 378 | 534 | 400 | 470 | 511 | 332 | 336 | 295 | 261 | 387 | 283 | 191 | 864 | 724 | 776 | 783 | 649 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | glassy |
High Tide | 2:24PM1.36m | 2:40AM1.48m | 3:09PM1.52m | 3:22AM1.58m | 3:48PM1.66m | 4:00AM1.63m | 4:25PM1.74m | 4:35AM1.64m | 4:59PM1.76m | 5:08AM1.60m | 5:31PM1.73m | 5:40AM1.53m | 6:02PM1.64m | |||||||
Low Tide | 8:30PM0.30m | 8:56AM0.16m | 9:16PM0.17m | 9:34AM0.04m | 9:56PM0.08m | 10:09AM-0.03m | 10:33PM0.04m | 10:42AM-0.05m | 11:07PM0.05m | 11:13AM-0.02m | 11:40PM0.11m | 11:43AM0.05m | 00:10AM0.19m | |||||||
 |  |  | |  |  | |  | | | | | | | | | | | | | |
 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — |
 | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — |
mm | 3 | 6 | 4 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 15 | 15 | 15 | 17 | 17 | 16 | 18 | 20 | 16 | 21 | 23 | 18 | 24 | 25 | 20 | 26 | 26 | 20 |
Feels °C | 11 | 12 | 10 | 11 | 11 | 12 | 12 | 12 | 13 | 15 | 12 | 17 | 19 | 16 | 22 | 23 | 19 | 22 | 22 | 18 |
Swell 1 Height (m) Direction Period (s) | SE 8 | S 10 | S 10 | S 10 | SSE 9 | SE 8 | SE 8 | S 10 | SSW 17 | SSW 20 | SSW 18 | SSW 16 | SSW 16 | E 8 | E 8 | E 11 | E 11 | E 12 | SSW 12 | E 11 |
| kJ | 188 | 562 | 1026 | 333 | 193 | 291 | 153 | 104 | 255 | 336 | 270 | 100 | 95 | 283 | 191 | 311 | 724 | 776 | 14 | 649 |
Swell 2 Height (m) Direction Period (s) | S 8 | ESE 9 | SSW 14 | SSE 8 | S 12 | S 11 | S 11 | SSW 18 | S 10 | SSW 16 | S 9 | S 9 | S 9 | SSW 15 | E 11 | E 7 | SSW 13 | SSW 12 | SW 16 | SW 15 |
| kJ | 124 | 207 | 425 | 180 | 274 | 195 | 151 | 223 | 50 | 142 | 7 | 6 | 2 | 44 | 166 | 123 | 17 | 14 | 42 | 9 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | S 14 | S 13 | SSW 13 | S 26 | SSW 23 | SSW 21 | SE 8 | SSW 22 | S 10 | S 12 | S 11 | S 11 | S 8 | SSW 14 | SSW 14 | S 12 | S 11 | — | SW 11 |
| kJ | 100 | 203 | 29 | 378 | 13 | 106 | 180 | 32 | 154 | 17 | 3 | 2 | 2 | 1 | 41 | 18 | 3 | 3 | — | 5 |
Wind waves Height (m) Direction Period (s) | — | SE 8 | ESE 9 | ESE 8 | ESE 9 | E 10 | E 10 | E 10 | E 9 | E 6 | E 7 | E 7 | E 7 | ENE 7 | ENE 7 | E 12 | E 12 | ENE 12 | E 11 | WSW 3 |
| kJ | — | 110 | 336 | 292 | 534 | 400 | 470 | 511 | 332 | 288 | 295 | 261 | 387 | 414 | 302 | 864 | 1079 | 1272 | 783 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 31 | 12 | 511 | 332 | 293 | 435 | 511 | 182 | 328 | 433 | 182 | 269 | 269 | 0 | 41 | 41 | 0 | 76 | 258 | 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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