Surf Forecasts:
Koeel Bay surf forecast from 9 Sep 2026:
- Best quality surf: Sunday 13 Sep, 2AM (local time) - 5ft (1.6m), 15s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 2AM (local time) - 8ft (2.5m), 16s period, SW swell with 3,116 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 11AM (local time) - 2ft (0.6m), 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 09) at 11AM. The primary swell is predicted to be 0.6m and 13s period with a secondary swell of 0.3m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Koeel Bay in the next 16 days are 2.5m 16s and forecast to arrive on Wednesday (Sep 16) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 3s period and expected on Friday (Sep 11) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 9th Sep) | 2ft (0.6m) 13s |
| Best Surf | 2AM (Sun 13th Sep) | 5ft (1.6m) 15s |
| Most Powerful | 2AM (Wed 16th Sep) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
Alright, let’s break it down.
First off, don’t get your hopes up too fast. The start is slow here at Koeel Bay. The first couple days are pretty average.
Wednesday morning (September 9th) brings small, clean 2ft waves from the SW with a sweet 13-second period, but the energy is weak (131) and the wind is cross-off. It’s surfable, but nothing special. The water is 56°, which is about 4° colder than normal, so grab the thick rubber.
Thursday (September 10th) steps up a bit – morning has 5ft SW swell with 15-second period and moderate energy (927). Wind is cross-off, so it stays clean, but still just marginal. Afternoon drops to 4ft.
Now, here’s the good stuff. Friday, September 12th, afternoon is a standout. We’re looking at a solid 6ft SSW swell with a very long 17-second period and serious energy pumping at 2407. Offshore wind from the SE means clean, lined-up waves. This reef loves that kind of groundswell. It’s intermediate level, so be ready.
Saturday morning (September 13th) holds clean 4ft SSW swell with light offshore winds. Not as big, but quality. Afternoon goes glassy with 4ft and a slight offshore breeze – real tidy.
Then we hit a rough patch from Monday (14th) through Tuesday (15th) – strong cross-onshore winds, lumpy, messy, and poor. That’s kite territory. This stretch runs into Wednesday morning (16th), where it cleans up but the swell is building again.
Wednesday afternoon, September 16th is another one to circle. We’ve got 8ft SSW swell with a 14-second period, huge energy (2313), and cross-off winds keeping it clean. That’s expert-only size.
Thursday morning (17th) stays good – 5ft SW, offshore wind, clean, solid energy (895).
Friday morning (18th September) is a gem: glassy, no wind, 3ft SW swell with a 12-second period. Small but smooth as glass – perfect for a longboard.
The last real highlight is Saturday morning, September 19th – 5ft SW swell with a 16-second period, moderate energy (1046), light cross-shore wind. It’s clean, but not offshore, so shape might be a little lumpy.
After that, surf fades and winds pick up through the end. There’s a small glassy window on Tuesday the 22nd with 3ft waves, but it’s very ordinary. The final days have onshore winds and poor conditions.
So, keep your eyes on Friday the 12th and Wednesday the 16th. Those are the winners. The rest is a mix of clean spells and blowouts.
Stay safe out there.
Rusty
Short Range ForecastMostly dry. Warm (max 20°C on Wed morning, min 14°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sat night. Warm (max 22°C on Sun afternoon, min 14°C on Mon night). Winds increasing (calm on Sun night, fresh winds from the NNW by Mon afternoon). | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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) | SW 13 | SW 13 | SSW 17 | SW 15 | SW 14 | SW 13 | SW 12 | SSE 7 | SSE 7 | SW 15 | SSW 17 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 21 | SW 18 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 109 | 106 | 214 | 924 | 647 | 418 | 277 | 288 | 277 | 657 | 1932 | 1102 | 617 | 479 | 295 | 154 | 112 | 112 | 658 | 1255 | 3116 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off |
High Tide | 2:15PM1.59m | 2:33AM1.53m | 2:52PM1.69m | 3:10AM1.58m | 3:26PM1.73m | 3:44AM1.58m | 3:59PM1.72m | 4:16AM1.54m | 4:30PM1.65m | 4:48AM1.47m | 5:00PM1.55m | 5:18AM1.38m | 5:30PM1.43m | ||||||||
Low Tide | 8:06AM0.12m | 8:33PM0.08m | 8:43AM0.05m | 9:10PM0.01m | 9:16AM0.01m | 9:44PM-0.01m | 9:48AM0.02m | 10:15PM0.02m | 10:19AM0.07m | 10:45PM0.08m | 10:48AM0.15m | 11:13PM0.18m | 11:16AM0.26m | 11:41PM0.29m | |||||||
 | |  |  | |  | | | |  | |  |  | | | | |  | | |  | |
 | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:43 | — | — |
 | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:32 | — | — | 6:34 | — | — | 6:35 | — | — | 6:35 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | 2 | — | 2 | — | — | 16 |
Temp °C | 20 | 20 | 16 | 17 | 18 | 15 | 17 | 18 | 15 | 18 | 18 | 17 | 20 | 22 | 20 | 16 | 19 | 16 | 16 | 19 | 16 |
Feels °C | 19 | 19 | 14 | 16 | 15 | 12 | 13 | 14 | 11 | 15 | 15 | 15 | 20 | 22 | 21 | 12 | 13 | 12 | 8 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 12 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 15 | SSW 17 | SSW 15 | SSW 14 | SSW 13 | S 8 | SW 12 | SW 12 | SW 12 | SW 21 | SW 18 | SW 16 |
| kJ | 109 | 106 | 214 | 924 | 647 | 418 | 277 | 193 | 106 | 657 | 1932 | 1102 | 617 | 479 | 147 | 154 | 112 | 112 | 658 | 1255 | 3116 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | S 8 | SSW 17 | SE 9 | — | SW 6 | — | — | SSW 15 | S 9 | — | SSE 8 | S 8 | SSE 11 | SSW 13 | S 7 | SSE 8 | SE 8 | SW 11 | SW 11 | — |
| kJ | 15 | 5 | 193 | 3 | — | 8 | — | — | 84 | 76 | — | 329 | 121 | 12 | 295 | 27 | 22 | 3 | 103 | 61 | — |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SSE 10 | SSE 8 | — | — | — | — | — | SSW 10 | SSW 20 | — | — | SE 8 | SE 11 | SSE 12 | SE 8 | SSE 12 | SE 12 | WSW 8 | SE 12 | — |
| kJ | 7 | 9 | 7 | — | — | — | — | — | 20 | 298 | — | — | 88 | 60 | 27 | 25 | 14 | 6 | 23 | 36 | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | S 3 | SSE 3 | — | — | SSE 3 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SSE 7 | SE 8 | — | S 8 | — | N 3 | NW 5 | NW 4 | NW 5 | WNW 5 | — |
| kJ | 2 | 5 | 4 | — | — | 10 | 249 | 288 | 277 | 200 | 475 | 773 | — | 118 | — | 4 | 62 | 43 | 108 | 153 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 47 | 0 | 5 | 47 | 34 | 53 | 10 | 0 | 5 | 379 | 0 | 0 | 0 | 4 | 22 | 30 | 22 | 140 | 188 | 47 |
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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