Surf Forecasts:
Robberg surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8PM (local time) - 10ft (3.0m), 13s period, SW swell with glassy winds.
- Most powerful swell: Thursday 20 Aug, 11AM (local time) - 13ft (4.0m), 14s period, SSW swell with 5,164 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 10ft (3.0m), 13s period with SW swell.
Best Forecast Surf Conditions for Robberg this week:
The surf forecast for Robberg over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 8PM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 0.2m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Robberg in the next 16 days are 4.0m 14s and forecast to arrive on Thursday (Aug 20) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 10s period and expected on Saturday (Aug 22) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 20th Aug) | 10ft (3.0m) 13s |
| Best Surf | 8PM (Thu 20th Aug) | 10ft (3.0m) 13s |
| Most Powerful | 11AM (Thu 20th Aug) | 13ft (4.0m) 14s |
Table - best surf conditions forecast for Robberg over the next 16 days.
The Lowdown
Alright, let's talk about Robberg in feet and degrees.
Water temp is 55°, which is about 8° colder than the norm for this time of year. That's a massive cold snap, so you'll be wanting a thick 5/4 and boots for sure.
The forecast starts a bit rough. Thursday the 20th has a massive 13ft swell from the SSW with a combined energy of 5171, but it's a cross-on wind. That's a lot of heavy water, especially with a 14-second period. Not a friendly day for paddling out. Friday and Saturday are messy with cross-shore winds and bumpy conditions.
First real highlight is Sunday the 23rd morning. The swell drops to 8ft from the SW, but the wind goes glassy – just 5 km/h from the SSE. It's flat calm, and the energy is still a solid 1683. This is the cleanest window of the first week. It's a bit off the optimum SE direction, but with glassy conditions, it'll be good for experienced surfers.
The next standout is Wednesday, 27th of August. The wind is light offshore from the N and NNW, giving clean conditions. The swell is a much smaller 4ft to 5ft from the SSW, with a 13-second period. The energy is in the 700-900 range, so it's a bit weaker, but it's clean. A good session for an intermediate surfer, and keep in mind Robberg can get crowded sometimes.
The end of the month is a bit of a mixed bag with some big swells but cross-shore winds and rain.
The best of the whole run is Wednesday, the 2nd of September. Morning and afternoon are both glassy. We're looking at an 8ft to 10ft SW swell with a 15-second period, giving a combined energy of 3197 to 3989. That's a serious, long-period groundswell. For experienced surfers, this is the one to circle on the calendar. The long period should make the reef work beautifully, but the beach breaks might be a bit fat. It's a week and a half away, so stay tuned, but it's got real potential.
So, the two best bets are Sunday the 23rd morning for the glass, and Wednesday the 2nd of September for the big, clean groundswell.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sat afternoon, min 12°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the W by Sat morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Tue afternoon, min 12°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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 14 | SW 13 | SW 12 | SW 12 | SW 12 | SSW 11 | SSW 13 | SW 12 | SW 11 | SW 11 | SW 12 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5164 | 3857 | 2166 | 1444 | 614 | 469 | 512 | 671 | 1279 | 1491 | 1092 | 1240 | 840 | 711 | 2265 | 2846 | 2053 | 880 | 1018 | 785 | 604 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-off | cross | cross | cross-off | cross | cross | cross-off | on | cross-on | glassy | cross-on | cross-on | glassy | cross | cross | cross-off | cross | cross-off | cross-off |
High Tide | 8:20PM1.14m | 9:21AM0.98m | 10:45PM1.05m | 12:36PM1.02m | 00:51AM1.13m | 1:37PM1.16m | 1:41AM1.26m | 2:11PM1.31m | 2:15AM1.39m | 2:40PM1.46m | 2:44AM1.51m | 3:06PM1.59m | 3:12AM1.61m | ||||||||
Low Tide | 1:48PM0.67m | 2:58AM0.73m | 3:17PM0.80m | 6:02AM0.75m | 6:37PM0.77m | 7:26AM0.62m | 7:40PM0.64m | 8:02AM0.48m | 8:15PM0.50m | 8:30AM0.34m | 8:44PM0.37m | 8:56AM0.22m | 9:12PM0.25m | ||||||||
 |  |  | | | | | |  | | | | | | | | | | | | | |
 | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — |
 | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 13 | 15 | 15 | 14 | 16 | 18 | 15 | 15 | 16 | 13 | 17 | 16 | 13 | 17 | 18 | 16 | 25 | 27 | 25 |
Feels °C | 14 | 13 | 13 | 13 | 12 | 12 | 11 | 12 | 13 | 14 | 14 | 13 | 16 | 14 | 13 | 15 | 15 | 14 | 22 | 25 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SSW 11 | SSW 13 | SW 12 | SW 11 | SW 11 | SW 12 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 |
| kJ | 5164 | 3857 | 2166 | 1444 | 614 | 469 | 512 | 671 | 1279 | 1491 | 1092 | 1240 | 840 | 711 | 2265 | 2846 | 2053 | 880 | 1018 | 785 | 604 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | SSW 11 | SW 11 | ESE 5 | E 8 | E 8 | SW 15 | SW 14 | — | SE 11 | SSW 15 | — | — | SSW 16 | SSW 14 | WSW 13 | S 15 | E 7 |
| kJ | 7 | 14 | 6 | 6 | 444 | 347 | 2 | 1 | 5 | 104 | 404 | — | 4 | 87 | — | — | 575 | 789 | 346 | 40 | 106 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | ESE 5 | E 8 | — | — | E 8 | — | — | — | SE 10 | — | — | — | — | — | S 15 | S 15 |
| kJ | — | — | — | — | — | 31 | 1 | — | — | 1 | — | — | — | 4 | — | — | — | — | — | 41 | 104 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ESE 4 | E 5 | WSW 10 | SW 7 | — | — | — | — | — | — | — | — | ESE 4 | ESE 6 | ESE 6 | ESE 7 | W 3 |
| kJ | — | — | — | — | 18 | 80 | 908 | 271 | — | — | — | — | — | — | — | — | 28 | 110 | 107 | 121 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 1 | 0 | 39 | 57 | 0 | 38 | 1 | 1 | 0 | 57 | 0 | 1 | 1 | 0 | 57 | 57 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Garden Route | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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Information about the Robberg Surf forecast
The above surf forecast table for Robberg provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Robberg can be found by selecting the local surf guide option on the grey menu. Our Robberg 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 (Robberg) 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 Robberg 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.
Robberg is 6 km (4 miles) from the city of Plettenberg Bay. If you plan a holiday in Garden Route, look for hotels and other accommodation in Plettenberg Bay. Plettenberg Bay has rooms for a wide range of budgets as well as car hire and transport links.
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