Surf Forecasts:
Koeel Bay surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 1 Sep, 8PM (local time) - 7ft (2.2m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 1 Sep, 11PM (local time) - 7ft (2.2m), 14s period, SSW swell with 1,831 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 8AM (local time) - 6ft (1.8m), 13s 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 (Sep 01) at 8AM. The primary swell is predicted to be 1.8m and 13s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Koeel Bay in the next 16 days are 2.2m 14s and forecast to arrive on Tuesday (Sep 01) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 12s period and expected on Thursday (Sep 03) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 1st Sep) | 6ft (1.8m) 13s |
| Best Surf | 8PM (Tue 1st Sep) | 7ft (2.2m) 14s |
| Most Powerful | 11PM (Tue 1st Sep) | 7ft (2.2m) 14s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve been staring at Koeel Bay for the next couple of weeks. It’s a reef break that takes a fair bit of south in the swell. Let’s break it down, day by day.
The water’s sitting at about 58°, which is a bit colder than normal for this time of year – nearly two and a half degrees off – so you’ll want the thick wettie.
We’ve got a bit of a slow start, but things build into a real window of clean, lined-up surf. For the first few days, honestly, it’s not worth paddling out. Tuesday the 1st shows a 6ft SSW swell with a 14-second period, and the combined energy is solid at 1272, but the wind is cross and the wave comment says marginal – it’s a pass. Wednesday the 2nd is similar, with 6ft SW swell, still decent energy (1280), but the cross-off breeze keeps it clean. Still, the scores are low, so I’d wait.
Thursday the 3rd, though – you get a 6ft S swell, period drops to 8 seconds, and the energy falls to 555. It’s short period and the wind’s clean, but the waves will be weak and crumbly. Then Thursday arvo gets nasty – 8ft SSE with 25 mph winds – that’s a kite day, not a paddle day. Friday the 4th and Saturday the 5th are both big offshore winds (25-28 mph), making it clean but nearly impossible to paddle into – that’s expert-only or kite territory.
Now, here’s where it gets good. Sunday the 6th is the standout. Morning brings a 4ft SW swell with a 16-second period, energy at 1083, and a moderate offshore breeze – clean, long lines. The arvo gets even better: 3ft SSW with a 19-second period (that’s very long period groundswell), energy at 1006, and gentle offshore wind. For a reef like Koeel Bay, that long period is perfect – the waves will have shape, power, and nice gaps between sets. That afternoon session is the pick of the whole forecast.
Monday the 7th keeps it tidy – 4ft S swell, 13-second period, and glassy conditions in the morning. That’s beautiful, clean surf, though a step down in size from the Sunday arvo. Tuesday the 8th drops right off – tiny 3ft swell, short period, cross-on wind. Forget it.
From Wednesday the 9th through to about Friday the 11th, we’re in a flat spell. Wednesday morning is 1.0ft SW, energy at 67 – barely a ripple. Thursday the 10th shows a pulse of 3ft SW swell (277 energy) but the wind’s cross-off, so it’s surfable but not memorable. Friday the 11th has a 3ft SW swell with a 15-second period, clean offshore wind, but it’s small.
Then the next window opens up on Tuesday the 15th. That morning you’ve got 5ft SSW swell, 12-second period, energy at 665, and clean conditions. The real gem is the afternoon – same 5ft SSW, but glassy conditions. That’s a solid, clean, head-high reef session. It’s not as big as the Sunday the 6th standouts, but it’s the best option in the second week. Crowds are listed as “sometimes” for Koeel Bay, so you might have company, but it’s worth it for those clean lines.
Wednesday the 16th is a write-off – onshore wind and choppy.
The clear standout is Sunday the 6th, specifically the afternoon – 3ft SSW with a 19-second period, gentle offshore, and clean. That’s the session to circle on the calendar. The second best is Tuesday the 15th afternoon – glassy, 5ft SSW, solid and clean.
A note: the Friday the 4th and Saturday the 5th big swell with strong offshore wind – that’s more kite surfing territory. The long period swells (like Sunday 6th and Friday 11th) are great on a reef like this, so don’t worry about them breaking straight.
Stay stoked,
Rusty
Short Range ForecastLight rain (total 6mm), mostly falling on Thu afternoon. Very mild (max 17°C on Wed afternoon, min 11°C on Tue morning). Winds increasing (calm on Tue night, strong winds from the SE by Thu afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Sun afternoon, min 10°C on Fri night). Winds decreasing (strong winds from the ESE on Fri afternoon, light winds from the ENE by Sun night). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 | SSW 14 | SW 14 | SW 13 | SW 13 | SW 13 | S 8 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | SE 7 | SE 7 | SE 6 | SE 7 | SW 16 | SSW 19 | ESE 8 | S 13 | S 12 | S 11 |
Wave Graph | |||||||||||||||||||||
1272 | 1722 | 1814 | 1280 | 1083 | 466 | 332 | 1151 | 905 | 642 | 412 | 311 | 213 | 255 | 267 | 551 | 577 | 500 | 473 | 409 | 237 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross-off | cross | cross | cross-off | cross-off | off | off | off | off | off | off | off | off | off | cross-off | glassy | cross-off | cross |
High Tide | 5:39PM1.55m | 6:00AM1.34m | 6:20PM1.44m | 6:47AM1.22m | 7:12PM1.30m | 7:52AM1.10m | 8:30PM1.17m | 9:39AM1.04m | 10:27PM1.13m | 11:35AM1.12m | 00:04AM1.21m | 12:46PM1.28m | 1:07AM1.34m | ||||||||
Low Tide | 11:21AM0.17m | 11:54PM0.20m | 11:58AM0.27m | 00:38AM0.31m | 12:44PM0.39m | 1:37AM0.44m | 1:53PM0.53m | 3:15AM0.53m | 4:01PM0.59m | 5:18AM0.49m | 5:58PM0.50m | 6:34AM0.37m | 7:05PM0.34m | ||||||||
7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | |
— | 6:25 | — | — | 6:25 | — | — | 6:27 | — | — | 6:28 | — | — | 6:28 | — | — | 6:29 | — | — | 6:30 | — | |
mm | — | — | — | — | — | — | 2 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 13 | 16 | 17 | 14 | 15 | 15 | 14 | 16 | 18 | 13 | 16 | 20 | 15 | 18 | 24 | 19 | 26 | 27 | 24 |
Feels °C | 13 | 14 | 13 | 13 | 15 | 13 | 12 | 7 | 6 | 8 | 9 | 5 | 9 | 12 | 9 | 14 | 21 | 16 | 26 | 26 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | WSW 12 | SW 10 | SSW 13 | SSW 10 | SSW 10 | SSW 18 | SW 16 | SSW 19 | SE 8 | S 13 | S 12 | S 11 |
1272 | 1722 | 1814 | 1280 | 1083 | 466 | 223 | 147 | 106 | 153 | 54 | 56 | 102 | 100 | 207 | 551 | 577 | 109 | 473 | 409 | 237 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 10 | — | — | — | SW 14 | S 14 | SW 10 | SW 10 | SW 10 | SSW 14 | S 21 | SW 14 | SSW 15 | WSW 13 | SW 13 | WSW 12 |
— | — | — | — | — | 146 | — | — | — | 8 | 15 | 28 | 25 | 15 | 149 | 320 | 245 | 304 | 17 | 27 | 14 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 14 | — | S 13 | — | SW 21 | SSW 10 | — | S 12 | SW 14 | WSW 13 | WSW 13 | SE 10 |
— | — | — | — | — | — | — | — | — | 4 | — | 31 | — | 18 | 52 | — | 3 | 49 | 151 | 176 | 145 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | S 8 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | SE 7 | SE 7 | SE 6 | SE 7 | SE 7 | SE 8 | ESE 8 | — | — | — |
— | — | — | — | — | — | 332 | 1151 | 905 | 642 | 412 | 311 | 213 | 255 | 267 | 212 | 181 | 500 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 18 | 0 | 0 | 15 | 4 | 15 | 562 | 216 | 1332 | 3850 | 10 | 10 | 48 | 48 | 0 | 0 | 0 | 0 | 0 | 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.











