
Surf Forecasts:
Oyster Bay surf forecast from 13 Sep 2026:
- Best quality surf: Sunday 13 Sep, 8PM (local time) - 11ft (3.5m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 8AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,752 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 8PM (local time) - 11ft (3.5m), 10s period with E 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 Sunday (Sep 13) at 8PM. The primary swell is predicted to be 3.5m and 10s period with a secondary swell of 1.8m and 14s. Another secondary swell of 0.1m and 10s is also forecast. The wind is predicted to be cross-offshore 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 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Friday (Sep 18) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 13th Sep) | 11ft (3.5m) 10s |
| Best Surf | 8PM (Sun 13th Sep) | 11ft (3.5m) 10s |
| Most Powerful | 8AM (Wed 16th Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Oyster Bay over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve got a look at what’s coming our way for Oyster Bay over the next couple of weeks. Let’s be straight with each other – this ain’t a stretch for the faint of heart. The whole run is for the crew who know what they’re doing, and even then, there are only a couple of true windows where everything lines up.
Water temp is sitting at around 65°, which is pretty much what you’d expect for this time of year – nothing unusual, just standard Oyster Bay warmth.
We kick off Sunday the 13th with a big, solid pulse. Swell is pumping at 12 ft from the east, period around 9 seconds, and the combined energy is a hefty 3477. It’s clean out there, with a cross-off wind, but mate, this is serious size. That’s expert territory only. It’s inconsistent, so you’ll be waiting for sets, and when they come, they’ll be meaty. If you’re not dialled in, give it a miss. Wind is a strong breeze from the ENE at 25 mph, so it’s not glassy, but it’s workable for the experienced.
Monday the 14th morning is the standout. Glassy offshore wind from the north at 6 mph, swell drops to 8 ft from the east, period 10 seconds – that’s proper groundswell. The energy is still strong at 1792. Clean faces, that offshore wind will groom it beautifully. Best session on offer. Crowds are sometimes an issue, but with this size and inconsistency, it might keep the numbers down a bit. For the skilled surfer, this is the one to chase.
Monday afternoon turns messy – cross-on westerly at 12 mph, size drops a little to 7 ft but the quality tanks. Tuesday the 15th is marginal both sessions, with light cross-on wind and smaller 5 ft swell from the east, period 11 seconds. Energy down to 1001. Not worth paddling out for.
Wednesday the 16th is a write-off – big 10 ft SW groundswell but hammered by rain and fresh cross-on wind. Nasty.
Thursday the 17th offers a clean cross-off wind from the east at 16 mph, 6 ft SW swell with a long 13-second period. Energy is 1481. It’s clean but the swell direction isn’t ideal for Oyster Bay, and it’s marginal. A few waves for the patient surfer but nothing to write home about.
Friday the 18th is more of the same – clean early with a cross-off and 6 ft SW swell at 14 seconds, but it’s not pumping. Energy around 1318. Saturday the 19th is back to big, raw power – 10 ft to 12 ft east swell, short 8-second period, but cross-off wind keeps it clean. Too big for most, and the short period makes it dumpy. Sunday the 20th morning is absolutely massive – 12 ft east swell at 10 seconds, energy 4228, but light cross-off wind. Only for the hardcore.
Then Sunday afternoon the 20th – here’s another little gem. Glassy conditions, wind swings to the south at just 3 mph, swell drops to a still-juicy 8 ft from the east-southeast, period 10 seconds. Energy is 2489. Clean, glassy, and good size for experienced surfers. This is a proper session if you can handle it.
From there, it’s a slow decline. Monday the 21st is messy, Tuesday the 22nd has strong cross-off wind but poor-quality 5 ft swell. Wednesday and Thursday the 23rd and 24th are dominated by strong wind and messy conditions, with occasional clean windows of big swell that’s just too powerful for Oyster Bay. By Friday the 25th and Saturday the 26th, we get another glassy moment on Saturday morning – wind from the west-northwest at just 3 mph, 6 ft SW swell at 13 seconds, energy 1965. That’s clean and inviting for the experienced crew.
Sunday the 27th and Monday the 28th are brutal – strong onshore wind, huge 15 ft east swell, energy over 5000. That is not a surfing day. That is a day to watch from the beach or rig up a kite.
Best on offer: Monday 14th September morning, and Sunday 20th September afternoon. Both have that clean, offshore or glassy feel with solid swell. Everything else is either too big, too messy, or too small.
Stay sharp, and don’t go out over your head.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Wed morning. Warm (max 20°C on Tue morning, min 14°C on Wed morning). Winds decreasing (strong winds from the ENE on Sun afternoon, calm by Tue night). | Days 5-7 Weather SummaryHeavy rain (total 28mm), heaviest during Wed afternoon. Very mild (max 18°C on Sat morning, min 13°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the E by Sat morning). | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | E 9 | E 10 | E 10 | E 10 | E 11 | E 11 | E 11 | SW 16 | SW 11 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 14 | SW 13 | E 8 | E 9 | E 9 |
Wave Graph | ||||||||||||||||||||
1849 | 2491 | 1257 | 1040 | 941 | 610 | 459 | 582 | 1829 | 2952 | 1053 | 1109 | 992 | 855 | 699 | 1318 | 940 | 1208 | 1716 | 1198 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-on | off | cross-on | cross-on | on | cross-on | cross-on | cross | cross-off | cross-off | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 7:53AM0.94m | 9:03PM0.94m | |||||||
Low Tide | 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 | 2:03PM0.76m | 4:55AM0.74m | |||||||
— | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | |
6:09 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | — | 6:14 | — | |
mm | 1 | — | 3 | 1 | 2 | — | — | 1 | 4 | 9 | 5 | 1 | 2 | 8 | 3 | — | — | — | — | — |
Temp °C | 17 | 19 | 18 | 19 | 17 | 20 | 19 | 18 | 15 | 14 | 16 | 15 | 14 | 14 | 16 | 17 | 16 | 18 | 18 | 17 |
Feels °C | 10 | 17 | 17 | 20 | 14 | 18 | 16 | 17 | 8 | 11 | 11 | 9 | 9 | 12 | 11 | 11 | 11 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 14 | E 10 | E 10 | E 10 | E 11 | E 11 | E 11 | SW 10 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 |
1626 | 1742 | 1257 | 1040 | 941 | 610 | 459 | 582 | 606 | 2952 | 1053 | 1109 | 992 | 855 | 699 | 1318 | 940 | 706 | 645 | 471 | |
Swell 2 Height (m) Direction Period (s) | S 10 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 10 | E 11 | E 10 | E 10 | SW 9 | E 10 | E 10 | E 8 | SW 15 | — | — | — | — | SW 15 |
2 | 859 | 535 | 437 | 303 | 363 | 298 | 267 | 165 | 128 | 221 | 102 | 98 | 86 | 223 | — | — | — | — | 262 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SW 6 | SSW 17 | SSW 15 | SW 16 | S 10 | — | E 10 | — | — | — | E 10 | — | — | — | — | — |
— | — | — | — | 54 | 28 | 91 | 553 | 2 | — | 100 | — | — | — | 51 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 9 | E 10 | — | WSW 3 | — | — | — | — | SW 11 | — | SSE 7 | SSE 7 | SE 7 | SE 6 | ESE 6 | ESE 6 | E 7 | E 8 | E 9 | E 9 |
1849 | 2491 | — | 6 | — | — | — | — | 1829 | — | 278 | 270 | 204 | 91 | 173 | 240 | 427 | 1208 | 1716 | 1198 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 189 | 14 | 0 | 22 | 0 | 1 | 4 | 4 | 4 | 133 | 163 | 639 | 47 | 0 | 171 | 552 | 163 | 174 | 189 | 132 |
Best forecast wave conditions in Eastern Cape (South) | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.










