
Surf Forecasts:
Oyster Bay surf forecast from 12 Sep 2026:
- Best quality surf: Sunday 13 Sep, 5PM (local time) - 10ft (3.0m), 10s period, ESE swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 2PM (local time) - 10ft (3.0m), 14s period, SW swell with 4,168 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 11AM (local time) - 3ft (0.9m), 14s period with SW swell.
Best Forecast Surf Conditions for Oyster Bay this week:
The surf forecast for Oyster Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 12) at 11AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.3m and 7s. Another secondary swell of 1.0m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Oyster Bay in the next 16 days are 3.0m 14s and forecast to arrive on Wednesday (Sep 16) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 12s period and expected on Saturday (Sep 12) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sat 12th Sep) | 3ft (0.9m) 14s |
| Best Surf | 5PM (Sun 13th Sep) | 10ft (3.0m) 10s |
| Most Powerful | 2PM (Wed 16th Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Oyster Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what the next couple of weeks are looking like.
First up, a real standout on Saturday morning, September 12th. Oyster Bay is glassy flat calm, with a clean 3ft swell from the southwest, 14-second period. That’s a nice, long-period groundswell rolling in with moderate energy (534). The water is sitting at 62°, which is about 3° colder than usual for this time of year – a bit chilly, but a good wetsuit will sort you out. This is your window. Oyster Bay can be inconsistent, so when it comes together like this, you paddle out.
Saturday afternoon the swell jumps to 6ft, but the wind swings onshore from the SSW at 9 mph, and the energy spikes (1845), but it gets messy. Not ideal.
Sunday the 13th is a total washout. Massive swell over 10ft with a screaming 31 mph cross-offshore wind from the east. Short period of 9 seconds. Just raw and ugly. Too big and too blown.
Monday the 14th morning, the swell drops to 8ft from the ESE with 10 seconds, and we get a clean offshore from the NNE at 12 mph. This is for experienced surfers only – that’s a solid, powerful wave with strong energy (1746). Good shape, but you better know what you’re doing.
Tuesday the 15th and Wednesday the 16th are mixed. Tuesday sees the swell easing to 5ft but winds are onshore or cross-onshore, making it sloppy. Wednesday the 16th morning we get another big pulse – 10ft from the southwest with a 15-second period – very long period groundswell, but it’s cross-onshore from the SW at just 9 mph. The energy is massive (3771). For experts only at a sandbar, that long period can make it break too straight and dumpy. By afternoon, 25 mph winds from the south ruin it.
Thursday the 17th and Friday the 18th are both average. Swell around 6ft, but winds are cross-shore or onshore. Nothing to write home about.
Saturday the 19th is more onshore slop. Swell around 8ft but choppy.
Now, another real highlight. Sunday morning, September 20th. The swell is a clean 7ft from the southwest with a 14-second period. Wind is light from the east at 6 mph, blowing cross-offshore. That’s the recipe for a clean, powerful session with moderate energy (1706). For the experienced crew, this is a serious option. Oyster Bay is inconsistent, so you grab these days.
Monday the 21st stays clean with cross-offshore winds, but the swell is 8ft from the east with a short 9-second period. Strong energy (1973), but short period windswell tends to be lumpy and less organized at a sandbar. Still rideable for the bold.
Tuesday the 22nd morning, we get a nice offshore from the NNE at 9 mph with a 7ft east swell, 9 seconds. Clean, fun, manageable for intermediates who are comfortable in that size.
From Wednesday the 23rd onward, it’s a long stretch of ugly. Strong winds from the west, near-gale force, blowing cross-onshore, with swell around 5ft to 7ft. It’s messy, blown out, and not worth paddling out. This lasts through to Friday the 25th.
Saturday the 26th morning finally shows a reprieve. The swell drops to 3ft from the east with 10 seconds, and the wind is almost nothing from the ENE – glassy clean. Very low energy (234), but if you want a longboard or a fun little cruiser, this will be the cleanest wave in over a week.
Sunday the 27th, the wind picks up again fresh from the WSW, making it lumpy and poor.
Overall, the best on offer is Saturday morning the 12th for the clean, glassy, long-period groundswell, and Sunday morning the 20th for a bigger, powerful, clean session. After that, it’s a long dry stretch until the 26th.
Rusty.
Short Range ForecastHeavy rain (total 25mm), heaviest during Sun morning. Warm (max 23°C on Mon afternoon, min 16°C on Sat night). Winds increasing (calm on Sat morning, near gales from the ESE by Sat night). | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Wed afternoon. Very mild (max 19°C on Tue morning, min 15°C on Wed morning). Winds increasing (calm on Tue morning, strong winds from the SSE by Wed night). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 14 | SW 16 | SW 15 | ESE 10 | ESE 10 | ESE 10 | E 10 | E 11 | E 11 | E 11 | SW 10 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 14 | SW 13 |
Wave Graph | |||||||||||||||||||||
305 | 1521 | 2694 | 2267 | 1844 | 1596 | 1155 | 816 | 935 | 628 | 459 | 901 | 3565 | 2982 | 1565 | 944 | 913 | 723 | 939 | 1641 | 1514 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross | cross-off | cross-off | cross-off | off | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | on | on | cross-on |
High Tide | 4:23PM1.81m | 4:37AM1.63m | 4:52PM1.75m | 5:05AM1.56m | 5:20PM1.65m | 5:32AM1.47m | 5:46PM1.52m | 5:59AM1.35m | 6:11PM1.37m | 6:25AM1.22m | 6:38PM1.22m | 6:56AM1.08m | 7:12PM1.07m | ||||||||
Low Tide | 10:10AM-0.03m | 10:35PM0.01m | 10:38AM0.01m | 11:03PM0.06m | 11:06AM0.09m | 11:30PM0.16m | 11:32AM0.20m | 11:56PM0.27m | 11:58AM0.33m | 00:22AM0.40m | 12:25PM0.47m | 00:53AM0.54m | 12:57PM0.62m | 1:42AM0.67m | |||||||
6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | |
— | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | |
mm | 2 | — | 6 | 11 | 2 | 1 | — | — | 3 | 1 | — | — | 2 | 5 | 3 | 1 | — | — | 3 | 4 | 5 |
Temp °C | 18 | 18 | 18 | 17 | 17 | 19 | 22 | 23 | 18 | 19 | 19 | 18 | 15 | 15 | 15 | 16 | 17 | 16 | 15 | 15 | 15 |
Feels °C | 20 | 19 | 18 | 10 | 10 | 17 | 20 | 22 | 16 | 18 | 17 | 18 | 13 | 13 | 8 | 12 | 12 | 10 | 14 | 11 | 13 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | SW 14 | SW 16 | SW 15 | SW 14 | ESE 10 | ESE 10 | E 10 | E 11 | E 11 | SW 10 | SW 10 | SW 15 | SW 14 | SW 13 | SE 8 | SW 12 | SW 12 | SW 12 | SW 14 | SW 13 |
154 | 1521 | 2694 | 2117 | 1626 | 1596 | 1155 | 816 | 935 | 628 | 396 | 901 | 3565 | 2982 | 1565 | 416 | 913 | 723 | 939 | 1641 | 1514 | |
Swell 2 Height (m) Direction Period (s) | WSW 12 | SE 7 | — | — | — | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | E 11 | SW 16 | E 10 | E 10 | E 10 | SW 12 | E 10 | ESE 9 | ENE 10 | ESE 9 | ESE 9 |
365 | 89 | — | — | — | 859 | 591 | 494 | 303 | 445 | 459 | 719 | 204 | 128 | 96 | 944 | 96 | 395 | 20 | 326 | 266 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | SSW 20 | — | — | — | SSE 7 | — | — | SW 6 | SSW 17 | SSW 15 | E 11 | S 10 | — | E 10 | E 10 | — | E 10 | E 10 | E 10 | E 10 |
305 | 131 | — | — | — | 71 | — | — | 78 | 55 | 150 | 326 | 2 | — | 158 | 96 | — | 52 | 71 | 35 | 29 | |
Wind waves Height (m) Direction Period (s) | E 6 | E 7 | SE 9 | ESE 9 | ESE 10 | — | — | WSW 4 | — | — | — | — | — | S 7 | S 8 | — | SE 7 | — | ESE 9 | — | — |
75 | 104 | 1800 | 2267 | 1844 | — | — | 22 | — | — | — | — | — | 233 | 559 | — | 301 | — | 416 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 4 | 189 | 189 | 189 | 132 | 0 | 2 | 1 | 2 | 4 | 2 | 1 | 80 | 132 | 189 | 174 | 47 | 2 | 23 | 19 |
Best forecast wave conditions in Eastern Cape (South) | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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Information about the Oyster Bay Surf forecast
The above surf forecast table for Oyster Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Oyster Bay can be found by selecting the local surf guide option on the grey menu. Our Oyster Bay 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 (Oyster Bay) 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 Oyster Bay 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.
Oyster Bay is 24 km (15 miles) from the city of Kruisfontein. If you plan a holiday in Eastern Cape (South), look for hotels and other accommodation in Kruisfontein. Kruisfontein has rooms for a wide range of budgets as well as car hire and transport links.










