Surf Forecasts:
Koeel Bay surf forecast from 15 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 11PM (local time) - 5ft (1.5m), 13s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 8PM (local time) - 5.5ft (1.7m), 13s period, SW swell with 1,006 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 11PM (local time) - 5ft (1.5m), 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 Wednesday (Sep 16) at 11PM. The primary swell is predicted to be 1.5m and 13s period with a secondary swell of 1.3m and 13s. Another secondary swell of 1.6m and 7s 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 1.7m 13s and forecast to arrive on Wednesday (Sep 16) at 8PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Saturday (Sep 19) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 16th Sep) | 5ft (1.5m) 13s |
| Best Surf | 11PM (Wed 16th Sep) | 5ft (1.5m) 13s |
| Most Powerful | 8PM (Wed 16th Sep) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's break down what's happening at Koeel Bay in the old measurements. It's a reef break, fairly consistent, and the only spot in the forecast worth talking about.
First few days are a bust. Monday the 14th and Tuesday the 15th are messy with strong cross-onshore winds. The water temp is about 59°F, which is around 1°F cooler than usual for this time of year. Not a big deal, but you'll feel it.
Wednesday the 16th things clean up. Swell hits about 4ft in the morning from the SW, building to 5ft by the afternoon. The period is 13-14 seconds, a nice groundswell. The combined energy jumps to 1485, so there's some real power. It's a bit tide-sensitive, but this is the first real chance for a wave.
Thursday the 17th morning is a winner. 5ft from the SSW, clean, with fresh offshore winds. The combined energy is 812. That's solid, lined-up surf for intermediate surfers. The afternoon drops off, but the morning session is the one.
Friday the 18th keeps the offshore wind. Swell is around 4ft to 4ft, clean but the afternoon winds are strong, making paddling a bit of a battle. Still surfable.
Saturday the 19th and Sunday the 20th are smaller and cleaner, with swell around 3ft to 4ft. Fun but not pumping.
Now for the real standout: Tuesday the 22nd of September. The morning is glassy, almost no wind, with a 4ft SSW groundswell and a 13-second period. The combined energy is 672. That's the best conditions in the whole 16-day window. The afternoon gets bigger at 7ft, but it's a short-period wind swell from the SSE, so it'll be a bit of a mess. The morning is the clear winner.
The following week has a few more clean sessions, especially Thursday the 24th afternoon with a 5ft SE swell and light offshore winds. Energy is 681. Conditions look very good. But when the swell pushes over 8ft, it's for experts only. The second week is generally smaller and cleaner, with some marginal days.
Best bet: Tuesday morning the 22nd. Glassy, clean, solid groundswell. Crowds are possible, so be ready to share. That's the one to circle on the calendar.
Rusty, out.
Short Range ForecastHeavy rain (total 26mm), heaviest during Tue night. Very mild (max 19°C on Mon afternoon, min 12°C on Tue night). Winds decreasing (strong winds from the NW on Tue afternoon, light winds from the SSE by Tue night). | Days 5-7 Weather SummarySome drizzle, heaviest during Sat afternoon. Very mild (max 18°C on Fri afternoon, min 12°C on Thu night). Mainly strong winds. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 12 | SSW 12 | SW 18 | SW 16 | SW 11 | SW 14 | SW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SW 11 | SW 13 | SW 13 | SW 12 | SW 12 | SW 13 | SW 13 | SW 14 | SW 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 142 | 90 | 96 | 421 | 487 | 526 | 802 | 932 | 658 | 441 | 335 | 283 | 525 | 424 | 240 | 164 | 249 | 392 | 447 | 273 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | off | off | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | off |
High Tide | 5:00PM1.55m | 5:18AM1.38m | 5:30PM1.43m | 5:48AM1.27m | 6:00PM1.29m | 6:21AM1.15m | 6:35PM1.15m | 7:04AM1.03m | 7:25PM1.02m | 8:33AM0.93m | 9:30PM0.94m | 11:21AM0.96m | 11:43PM1.00m | |||||||
Low Tide | 11:13PM0.18m | 11:16AM0.26m | 11:41PM0.29m | 11:45AM0.38m | 00:11AM0.42m | 12:15PM0.50m | 00:48AM0.54m | 12:56PM0.63m | 1:54AM0.65m | 2:45PM0.73m | 4:47AM0.67m | 5:45PM0.69m | ||||||||
 |  |  |  |  |  | |  | | | | | | | |  |  | | | | |
 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — |
 | 6:35 | — | — | 6:35 | — | — | 6:36 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — |
mm | — | 1 | — | — | 24 | 1 | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 19 | 16 | 17 | 18 | 14 | 15 | 16 | 13 | 15 | 16 | 13 | 17 | 18 | 15 | 18 | 18 | 16 | 17 | 17 | 15 |
Feels °C | 13 | 11 | 9 | 9 | 7 | 8 | 9 | 7 | 8 | 9 | 7 | 10 | 9 | 9 | 12 | 14 | 11 | 13 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SSW 12 | SW 11 | SW 16 | SW 11 | SW 14 | SW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 | SW 11 | SW 13 | SW 13 | SW 12 | SW 12 | SW 13 | SW 13 | SW 14 | SW 13 |
| kJ | 142 | 90 | 96 | 421 | 487 | 526 | 683 | 932 | 658 | 441 | 335 | 283 | 525 | 424 | 240 | 164 | 249 | 392 | 447 | 273 |
Swell 2 Height (m) Direction Period (s) | SE 13 | WNW 8 | SW 18 | SE 13 | SW 14 | SW 9 | SW 13 | W 12 | — | SSW 11 | — | SSW 15 | S 9 | SW 16 | SW 15 | SW 14 | SSW 10 | SE 12 | SE 13 | SE 13 |
| kJ | 26 | 6 | 79 | 7 | 466 | 152 | 802 | 319 | — | 206 | — | 123 | 7 | 41 | 106 | 100 | 31 | 6 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | SE 13 | SE 13 | — | N 5 | ESE 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | 7 | — | 2 | 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 5 | NNW 4 | NW 5 | NW 6 | — | S 7 | SSE 5 | SSE 7 | SSE 7 | SSE 6 | SE 5 | SE 5 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SSE 5 | S 5 | S 5 |
| kJ | 51 | 21 | 78 | 172 | — | 124 | 80 | 163 | 154 | 187 | 106 | 103 | 269 | 210 | 193 | 190 | 164 | 62 | 59 | 47 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 22 | 22 | 188 | 140 | 185 | 302 | 214 | 5 | 216 | 365 | 0 | 64 | 1393 | 58 | 185 | 365 | 419 | 214 | 830 | 0 |
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.
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