
Surf Forecasts:
Koeel Bay surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 11AM (local time) - 4.5ft (1.3m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 11AM (local time) - 5ft (1.5m), 18s period, SW swell with 1,327 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 11PM (local time) - 2.5ft (0.8m), 22s period with SW swell.
Best Forecast Surf Conditions for Koeel Bay this week:
The surf forecast for Koeel Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 11) at 11PM. The primary swell is predicted to be 0.8m and 22s period with a secondary swell of 0.8m and 11s. Another secondary swell of 1.4m and 8s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Koeel Bay in the next 16 days are 1.5m 18s and forecast to arrive on Thursday (Aug 13) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Thursday (Aug 13) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 11th Aug) | 2.5ft (0.8m) 22s |
| Best Surf | 11AM (Wed 12th Aug) | 4.5ft (1.3m) 18s |
| Most Powerful | 11AM (Thu 13th Aug) | 5ft (1.5m) 18s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve only got one spot on the menu this outlook – Koeel Bay – and the next 16 days are a mixed bag of real promise and some frustrating lulls. The water’s sitting at about 58°, which is a bit colder than usual for this time of year, so factor in an extra layer if you’re heading out.
The action starts on Tuesday afternoon, August 11, but honestly, it’s pretty marginal. We’ve got a 4 ft swell from the SSW with 12-second period, a moderate 19 mph ESE offshore wind keeping things clean, but the combined wave energy’s only 717 – not much grunt behind it, and the tide might play games. You could get a wave, but it’s not worth rushing for.
The real standout kicks off Wednesday morning, August 12. This is the best of the run. The swell lifts to 4 ft from the SW, with a gorgeous 18-second period – proper groundswell, long lines. The combined energy jumps to 1820 (moderate to strong). A light 6 mph ENE cross-off breeze keeps the faces clean. This one’s for experienced surfers; that long period can make the sets a bit trickier at a reef setup, but when it lines up, it’ll be memorable. The next morning, Thursday August 13, is still very good: similar 5 ft SW swell with 18-second period, 1414 energy, and a light 6 mph NE cross-off wind. Get in the water early.
We hit a flat patch from Friday August 14 through to Tuesday August 18. Swell drops under 3 ft, winds turn cross-onshore, and the scores nose-dive. There’s a brief window on Saturday August 15 morning with glass-off conditions and a 3 ft swell, but it’s small and weak (294 energy). Not worth paddling out for unless you’re desperate for a glide. Honestly, those mid-days are better spent on the beach.
Come Tuesday afternoon, August 18, things get rowdy but rough. A 7 ft swell from the WSW rolls in, combined energy 1505, but the period’s a short 12 seconds and a 12 mph SSW cross-wind chops it up. That’s kite-surf territory, not paddle.
Wednesday August 19 cleans up nicely – 5 to 6 ft SW swell, 11-second period, and a solid 12 to 16 mph ESE offshore wind. The energy’s moderate (593 to 676), and the winds will hold it together, though it’s still a wind-affected swell. Thursday August 20 sees a drop back to 4 ft, but the offshore’s still there. Nothing to get excited about.
The real second standout lands on Sunday August 23 afternoon and into Monday August 24. Sunday afternoon pumps: 6 ft SSW swell, 16-second period, combined energy hits 2061 – strong. A gentle 9 mph ESE offshore wind and clean conditions. Monday morning tops it off with 5 ft SSW swell, 13-second period, 928 energy, and glassy conditions with a light 3 mph ESE breeze. That Sunday-Monday weekend run is the one to plan around, though we’re a week and a half out, so keep an eye on it.
Overall, Wednesday August 12 morning and that Sunday August 23 afternoon into Monday August 24 are the clear winners. Everything else is small, choppy, or just not worth the effort. Crowds at Koeel Bay can pop up sometimes, but mid-week and early mornings should keep it quiet.
Stay stoked,
Rusty
Short Range ForecastSome drizzle, heaviest during Thu morning. Warm (max 24°C on Thu afternoon, min 11°C on Tue night). Winds decreasing (fresh winds from the ESE on Tue afternoon, calm by Wed afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Fri afternoon, min 12°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 12 | SW 22 | SW 18 | SW 18 | SW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | WSW 14 | SW 14 | SW 15 | SW 13 | SW 13 | SW 13 | SW 13 |
Wave Graph | ||||||||||||||||||||
301 | 906 | 1101 | 985 | 746 | 1327 | 943 | 611 | 424 | 355 | 308 | 268 | 253 | 332 | 305 | 424 | 701 | 569 | 437 | 357 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross-on | cross-on | cross-on | glassy | cross-off | cross-on | cross-on | cross-on | glassy | cross-on | on | cross-on |
High Tide | 2:31PM1.54m | 2:48AM1.55m | 3:14PM1.65m | 3:30AM1.59m | 3:53PM1.71m | 4:09AM1.58m | 4:30PM1.72m | 4:46AM1.53m | 5:05PM1.67m | 5:21AM1.45m | 5:39PM1.58m | 5:56AM1.35m | 6:13PM1.45m | |||||||
Low Tide | 8:46PM0.12m | 9:03AM0.03m | 9:29PM0.05m | 9:41AM-0.01m | 10:09PM0.02m | 10:17AM-0.00m | 10:47PM0.04m | 10:51AM0.05m | 11:22PM0.10m | 11:23AM0.14m | 11:56PM0.20m | 11:55AM0.25m | 00:29AM0.31m | |||||||
— | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | |
6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | — | 6:14 | — | — | 6:15 | — | |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 17 | 13 | 16 | 20 | 19 | 22 | 24 | 21 | 21 | 22 | 15 | 16 | 18 | 15 | 17 | 19 | 15 | 17 | 20 | 15 |
Feels °C | 11 | 7 | 13 | 18 | 14 | 20 | 21 | 19 | 16 | 17 | 13 | 16 | 16 | 14 | 14 | 16 | 15 | 14 | 16 | 12 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SW 22 | SW 18 | SW 18 | SW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | WSW 14 | SW 14 | SW 15 | SW 13 | SW 13 | SW 13 | SW 13 |
301 | 906 | 1101 | 985 | 746 | 1327 | 943 | 611 | 424 | 355 | 308 | 268 | 253 | 332 | 305 | 424 | 701 | 569 | 437 | 357 | |
Swell 2 Height (m) Direction Period (s) | SW 24 | SSW 11 | SE 8 | SE 8 | SW 21 | SE 12 | SE 12 | SE 12 | ESE 11 | SSE 12 | SE 12 | WSW 6 | WSW 6 | ESE 10 | ESE 11 | — | — | — | E 12 | E 11 |
149 | 135 | 93 | 48 | 658 | 87 | 68 | 47 | 146 | 14 | 5 | 6 | 3 | 21 | 11 | — | — | — | 3 | 3 | |
Swell 3 Height (m) Direction Period (s) | WSW 10 | — | SW 10 | SW 10 | SE 11 | — | — | — | — | — | — | ESE 10 | ESE 10 | — | — | — | — | — | — | — |
20 | — | 52 | 27 | 40 | — | — | — | — | — | — | 20 | 21 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 8 | SE 8 | ESE 8 | ESE 9 | ESE 6 | — | — | — | SE 12 | WNW 4 | W 6 | — | — | — | NNW 2 | W 3 | — | — | — | — |
247 | 191 | 574 | 475 | 43 | — | — | — | 35 | 7 | 6 | — | — | — | 1 | 5 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 10 | 5 | 0 | 0 | 10 | 0 | 0 | 4 | 4 | 19 | 4 | 0 | 0 | 14 | 19 | 22 | 0 | 4 | 14 | 22 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
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Information about the Koeel Bay Surf forecast
The above surf forecast table for Koeel Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Koeel Bay can be found by selecting the local surf guide option on the grey menu. Our Koeel 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 (Koeel 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 Koeel 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.
Koeel Bay is 18 km (11 miles) from the city of Grabouw. If you plan a holiday in Overberg, look for hotels and other accommodation in Grabouw. Grabouw has rooms for a wide range of budgets as well as car hire and transport links.











