
Surf Forecasts:
Koeel Bay surf forecast from 10 Aug 2026:
- Best quality surf: Monday 10 Aug, 8AM (local time) - 10ft (3.0m), 11s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 11 Aug, 2AM (local time) - 7.5ft (2.3m), 13s period, S swell with 1,866 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 8AM (local time) - 10ft (3.0m), 11s period with SSW 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 Monday (Aug 10) at 8AM. The primary swell is predicted to be 3.0m and 11s period with a secondary swell of 2.0m and 11s. 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 2.3m 13s and forecast to arrive on Tuesday (Aug 11) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Wednesday (Aug 12) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 10th Aug) | 10ft (3.0m) 11s |
| Best Surf | 8AM (Mon 10th Aug) | 10ft (3.0m) 11s |
| Most Powerful | 2AM (Tue 11th Aug) | 7.5ft (2.3m) 13s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what’s on the cards for Koeel Bay. We’ve got a solid run of surf coming up, but you’ll need to pick your moments for the best of it.
The main story is a building south swell that gets really interesting mid-week. The first few days are a bit average, but from Tuesday morning things start to clean up proper. The real standout window looks like Wednesday the 12th and Thursday the 13th. That’s when we get a long-period SW groundswell – we’re talking 18 seconds on Wednesday – and the winds go light or glassy. The water temp is about average for this time of year, so nothing wild there.
Let’s walk through it. Monday the 10th kicks off with a 6ft south swell, but it’s got a moderate breeze and the wave energy is moderate (744). It’s surfable but nothing to write home about. Monday afternoon bumps up to 7ft but the wind is a fresh offshore, and the energy jumps to strong (1746). Still, the conditions are a bit marginal.
Tuesday the 11th morning is where it starts to get interesting. We’ve got a 6ft south swell with a period of 12 seconds, a gentle offshore breeze, and strong wave energy (1451). This is excellent for experienced surfers. The afternoon drops slightly to 5ft from the SSE but remains clean with moderate offshore wind.
Now, Wednesday the 12th is the pick of the bunch. Morning sees a 4ft swell from the southwest with a very long 18-second period. It’s clean with just a slight air. The afternoon? Glassy conditions, same 4ft SW swell at 18 seconds. The wave energy is very strong (1640 and 1480). This is reef break perfection. Because it’s such a long period groundswell, it will be best on the take-off zone here at Koeel Bay – it’s a reef, so it should handle that long-period energy well. This is for intermediate to expert surfers; the power is there.
Thursday the 13th keeps the goods coming with 5ft SW swell and 18-second period in the morning, clean with a light cross-off breeze. Afternoon sees a gentle offshore and 5ft SW swell at 17 seconds. Both sessions have very strong energy (1552 and 1430). Another excellent day.
Friday the 14th sees the swell drop off. Morning is glassy with a 3ft SW swell (400 energy) – small but clean for a mellow session. Afternoon similar, 4ft.
The weekend goes a bit flat and choppy. Saturday the 15th and Sunday the 16th are poor with cross-onshore winds and small, weak swell. Not worth the paddle.
Monday the 17th brings a new pulse. A 6ft SW swell with 15-second period and a moderate offshore breeze. Wave energy is strong (1212). This is a very good option again, especially after the flat weekend.
From there, it tapers off. Tuesday the 18th through Wednesday the 19th are small and clean but weak – fine for a longboard or a beginner session. Thursday the 20th is blown out.
Friday the 21st looks like a big, messy one. An 8ft WSW swell but with a moderate cross-onshore wind and a short 10-second period. The energy is very strong (1569), but the conditions are poor. This one is for experts only, and even then, it’ll be a battle. It might be more of a kite-surfing day than a paddle-surfing day with that wind and size.
Saturday the 22nd cleans up with a glassy 5ft SSW swell – a decent morning session.
Then we have another potential standout on Sunday the 23rd. A 8ft SSW swell with a long 15-second period and glassy conditions. The combined energy is massive (3590). This is excellent for experienced surfers, but that size and power mean it’s strictly for the crew who know what they’re doing. Monday the 24th still has a solid 6ft SSW swell, clean and strong.
So, to sum it up: your absolute best bet is Wednesday the 12th and Thursday the 13th. That long-period SW groundswell with glassy or light offshore winds is as good as it gets. After that, Monday the 17th is another solid day. The big Sunday the 23rd is worth a look for the experts, but it’s a long-range call and less certain.
Stay safe out there.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Wed afternoon, min 10°C on Mon night). Winds decreasing (fresh winds from the ESE on Mon afternoon, calm by Wed afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 19°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 11 | S 9 | S 10 | S 13 | S 12 | SSE 11 | SW 22 | SW 18 | SW 18 | SW 16 | SW 18 | SW 17 | SW 16 | SW 15 | SW 15 | SW 14 | WSW 14 | SW 13 | SW 14 |
Wave Graph | |||||||||||||||||||
1685 | 528 | 976 | 1866 | 918 | 693 | 906 | 1101 | 985 | 844 | 1482 | 1120 | 619 | 365 | 472 | 308 | 323 | 261 | 264 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | cross-off | cross-off | glassy | cross-off | cross-off | off | cross | glassy | cross-off | cross | cross-on | cross-on | cross-on |
High Tide | 1:07AM1.37m | 1:44PM1.39m | 2:02AM1.47m | 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 | |||||||
Low Tide | 7:34AM0.23m | 7:58PM0.24m | 8:22AM0.11m | 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 | |||||||
— | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | |
6:08 | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 13 | 14 | 11 | 13 | 16 | 12 | 17 | 21 | 20 | 23 | 25 | 24 | 24 | 25 | 23 | 22 | 24 | 17 |
Feels °C | 5 | 7 | 7 | 5 | 9 | 12 | 7 | 14 | 19 | 16 | 21 | 23 | 21 | 22 | 24 | 22 | 18 | 21 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SSW 14 | S 13 | S 12 | SW 24 | SW 22 | SW 18 | SW 18 | SW 16 | SW 18 | SW 17 | SW 16 | SW 15 | SW 15 | SW 14 | WSW 14 | SW 13 | SW 14 |
1685 | 216 | 308 | 1866 | 918 | 149 | 906 | 1101 | 985 | 844 | 1482 | 1120 | 619 | 365 | 472 | 308 | 323 | 261 | 264 | |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 11 | WSW 11 | SW 26 | SW 24 | SSW 11 | SE 9 | SE 10 | SW 21 | SE 12 | SE 12 | SE 9 | SE 12 | SE 12 | SE 12 | ESE 9 | — | W 6 |
— | — | 317 | 101 | 27 | 358 | 135 | 61 | 92 | 463 | 68 | 49 | 38 | 35 | 22 | 5 | 28 | — | 1 | |
Swell 3 Height (m) Direction Period (s) | — | — | WSW 11 | — | SW 26 | WSW 10 | — | SW 10 | SW 10 | SE 10 | S 10 | — | — | — | — | — | — | — | S 11 |
— | — | 145 | — | 27 | 20 | — | 52 | 26 | 17 | 2 | — | — | — | — | — | — | — | 2 | |
Wind waves Height (m) Direction Period (s) | SSW 11 | S 9 | S 10 | SE 7 | SE 7 | SSE 11 | SE 8 | ESE 9 | ESE 9 | SE 6 | — | ESE 10 | — | — | — | — | — | — | — |
1111 | 528 | 976 | 315 | 479 | 693 | 191 | 426 | 377 | 33 | — | 261 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 216 | 185 | 185 | 5 | 0 | 0 | 4 | 0 | 0 | 10 | 0 | 0 | 14 | 0 | 0 | 4 | 19 | 19 | 4 |
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.











