Surf Forecasts:
Riet River surf forecast from 17 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8AM (local time) - 10ft (3.0m), 12s period, SW swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 2PM (local time) - 11ft (3.5m), 13s period, SSW swell with 4,231 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 5PM (local time) - 5ft (1.5m), 13s period with SW swell.
Best Forecast Surf Conditions for Riet River this week:
The surf forecast for Riet River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 5PM. The primary swell is predicted to be 1.5m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Riet River in the next 16 days are 3.5m 13s and forecast to arrive on Thursday (Aug 20) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 11s period and expected on Monday (Aug 17) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 17th Aug) | 5ft (1.5m) 13s |
| Best Surf | 8AM (Thu 20th Aug) | 10ft (3.0m) 12s |
| Most Powerful | 2PM (Thu 20th Aug) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Riet River over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's cooking for Riet River over the next couple of weeks.
Right, so the whole forecast is built around one spot: Riet River (a point break). It’s inconsistent, but when it lights up, it can be magic. Water temp is sitting at 59°, which is a good 8° colder than usual for this time of year – that’s *very* unusual, so you’ll want a good 5/4 and booties if you’re paddling out.
We’ve got a few smaller days to kick things off before the real juice shows up. Monday the 17th and Tuesday the 18th have some clean 4ft to 6ft SW swell with cross-off winds, but the energy is moderate (529 to 1027). It’s rideable, but nothing to clear your schedule for. Tuesday afternoon sees the energy jump into three digits (1027), but the commentary flags marginal tide conditions.
Now, Wednesday the 19th morning is where you want to be. We’ve got a 7ft SSW groundswell, period of 12 seconds, and the wind goes *glass* – that's dead calm. The energy is pumping at 1342, and the hard-to-find optimum direction of SSW is locking in perfectly for the point. This is the standout of the first week. It’s solid enough to be excellent for experienced surfers, but at just over 6ft, beginners might find it a handful. Keep in mind that longer-period swell like this sometimes throws straight walls at beach breaks, but at a point like Riet River? It should peel beautifully.
The swell builds later in the week, with Thursday the 20th seeing 10ft to 12ft SSW swell, but winds get a little cross or cross-off, and the recorded comments flag marginal conditions despite the high energy (3135 to 3919). At that size, it’s expert territory only.
Friday the 21st morning drops back to a cleaner 7ft SSW swell with light cross-off winds and 1181 energy – another solid session for those who know what they're doing. The weekend sees the swell pulse around the 7ft mark, but winds pick up to moderate breeze from the SW, keeping it clean but a bit bumpy.
Looking into the second week, there’s a promising window on Monday the 24th morning: glassy conditions again with a 7ft SSW groundswell at 12 seconds and 1069 energy. That’s a top pick for that period. Then a pulse of bigger swell rolls in around Sunday the 30th and Monday the 1st of September, with 10ft to 13ft SSW groundswell and massive energy readings (over 5000). But the winds start to get messy from the ENE later, and the commentary says poor surf conditions. That size is only for experts anyway, and the wind will make it a battle.
The standout session is hands-down Wednesday the 19th morning with that glassy, 7ft SSW groundswell. The backup is Monday the 24th morning for another glassy window with solid 7ft SSW swell.
Stay warm out there.
- Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Wed afternoon, min 14°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Fri afternoon, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | SW 14 | SW 13 | SW 13 | SW 14 | SW 13 | SSW 13 | SSW 12 | SW 13 | SSW 12 | SSW 12 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SW 11 | SSW 12 | SSW 12 | SSW 12 | SSW 12 |
Wave Graph | |||||||||||||||||||||
529 | 746 | 643 | 390 | 1027 | 1548 | 1342 | 1480 | 843 | 3135 | 3919 | 2204 | 1144 | 1027 | 686 | 411 | 1131 | 2279 | 1447 | 1280 | 1027 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | cross-on | glassy | cross-off | off | cross-off | cross | cross-on | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross | glassy |
High Tide | 6:30PM1.50m | 6:38AM1.29m | 6:59PM1.36m | 7:08AM1.17m | 7:30PM1.21m | 7:42AM1.03m | 8:12PM1.07m | 8:49AM0.91m | 10:19PM0.96m | 12:37PM0.91m | 00:55AM1.03m | 1:45PM1.05m | 1:47AM1.15m | ||||||||
Low Tide | 12:11PM0.17m | 00:40AM0.30m | 12:39PM0.30m | 1:10AM0.42m | 1:09PM0.44m | 1:46AM0.55m | 1:44PM0.59m | 2:45AM0.67m | 2:54PM0.72m | 5:46AM0.71m | 6:30PM0.73m | 7:31AM0.59m | 7:43PM0.61m | ||||||||
6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | |
— | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 15 | 17 | 17 | 16 | 18 | 19 | 16 | 16 | 16 | 16 | 17 | 18 | 15 | 16 | 16 | 13 | 15 | 17 | 15 |
Feels °C | 18 | 16 | 13 | 15 | 13 | 16 | 18 | 17 | 11 | 12 | 12 | 15 | 16 | 16 | 12 | 11 | 11 | 11 | 14 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | E 11 | SW 13 | SW 13 | SW 14 | SW 13 | SSW 13 | SSW 12 | SW 13 | SSW 12 | SSW 12 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | ENE 8 | SSW 12 | SSW 12 | SSW 12 | SSW 12 |
475 | 746 | 643 | 390 | 1027 | 1548 | 1342 | 1480 | 843 | 3135 | 3919 | 2204 | 1144 | 1027 | 686 | 411 | 11 | 2279 | 1447 | 1280 | 1027 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | E 11 | E 10 | ENE 10 | ENE 10 | E 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 5 | ENE 6 | ENE 7 | ENE 8 | — | ENE 8 | ENE 8 | ENE 9 | ENE 10 |
529 | 396 | 255 | 160 | 125 | 110 | 138 | 108 | 70 | 23 | 23 | 26 | 19 | 26 | 41 | 22 | — | 12 | 6 | 8 | 9 | |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 16 | — | — | — | — | ENE 9 | — | — | — | — | ENE 8 | — | — | — | — | — | — | ENE 8 | ENE 10 |
— | — | 105 | — | — | — | — | 64 | — | — | — | — | 13 | — | — | — | — | — | — | 6 | 9 | |
Wind waves Height (m) Direction Period (s) | — | — | — | SW 8 | — | — | — | SW 3 | SW 7 | — | — | ENE 8 | NE 5 | — | WSW 4 | SW 6 | SW 11 | — | — | — | — |
— | — | — | 161 | — | — | — | 9 | 483 | — | — | 23 | 37 | — | 31 | 206 | 1131 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 110 | 123 | 16 | 0 | 110 | 190 | 123 | 126 | 115 | 0 | 123 | 0 | 126 | 123 | 0 | 0 | 123 | 0 |
Best forecast wave conditions in Eastern Cape (South) | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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Information about the Riet River Surf forecast
The above surf forecast table for Riet River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Riet River can be found by selecting the local surf guide option on the grey menu. Our Riet River 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 (Riet River) 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 Riet River 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 (South)? If you are looking for accommodation near Riet River, camping, hotels and holiday cottages in Eastern Cape (South), consider staying in Port Alfred which is 5 km (3 miles) away. Other places in and around Eastern Cape (South) where you can find information about places to rent, and car hire include Grahamstown which is 48 km (30 miles) away, Bisho and Fort Beaufort.











