Surf Forecasts:
Koeel Bay surf forecast from 13 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 4.5ft (1.3m), 12s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 5AM (local time) - 6ft (1.8m), 14s period, SW swell with 1,271 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 5AM (local time) - 4.5ft (1.3m), 12s 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 Thursday (Sep 17) at 5AM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 1.2m and 12s. 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 1.8m 14s and forecast to arrive on Wednesday (Sep 16) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Thursday (Sep 17) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 17th Sep) | 4.5ft (1.3m) 12s |
| Best Surf | 5AM (Thu 17th Sep) | 4.5ft (1.3m) 12s |
| Most Powerful | 5AM (Wed 16th Sep) | 6ft (1.8m) 14s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming our way for Koeel Bay. The next 16 days have some promise, but you’ll need to pick your moments. There’s a fair bit of onshore wind making a mess of things early on, but some real gems pop up if you’re patient.
The first solid window is Sunday the 13th. Sunday afternoon kicks off with a 6 ft SE swell and glassy conditions – that’s a bit of a rare treat. The water temp is 58°, which is about a degree and a half cooler than you’d expect for this time of year, so you might want the thick wettie. It’s going to feel a bit chilly. That swell has solid moderate wave energy behind it (1086), and with the wind flat, it’ll be clean.
The best day overall is Tuesday the 22nd. Tuesday afternoon is a real standout: glassy conditions, calm wind, and a clean 4 ft SSW swell with a moderate period of 12 seconds. The wave energy is solid (707), and you’ll have the place all to yourself. It’s a reef break that’s fairly consistent and works well on a south swell. That’s the one to circle.
Keep an eye on Wednesday the 16th morning as a secondary chance. Wednesday morning has a moderate offshore wind from the SE with a 4 ft SW swell and moderate wave energy (623). It’s clean, but the swell is a little weaker than the standout day.
Later in the period, Sunday the 27th afternoon looks interesting. Fresh offshore SE wind and a long-period 4 ft SSW swell (16 seconds). That’s a groundswell with very strong wave energy (1635). The longer period might make it pitchy at the reef, but for experienced surfers, it’ll be well-shaped and powerful. The confidence is a bit lower this far out, but the potential is there.
Beware of the gaps. Monday the 14th through Tuesday the 15th are a write-off with strong cross-onshore winds and tiny waves. From the 23rd into the 24th, strong offshore winds will keep things clean but hard to paddle into. If you’re a beginner, anything over 5 ft is pushing it – and on the 23rd, the 5 ft swell with a 7-second period is short and dumpy, tricky for anyone.
In summary: Sunday the 13th afternoon and Tuesday the 22nd afternoon are your best bets. The 22nd is the true standout. Glassy, clean, and decent energy. Don’t miss it.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Tue night. Very mild (max 18°C on Sun night, min 12°C on Tue night). Winds increasing (light winds from the NNW on Sun night, strong winds from the NW by Tue afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Sat afternoon, min 12°C on Wed night). Winds decreasing (strong winds from the ESE on Fri afternoon, light winds from the SE by Sat afternoon). | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 13 | SSW 12 | SW 12 | SSW 12 | SW 18 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 14 | SW 13 | SW 12 | SW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 295 | 190 | 142 | 88 | 79 | 367 | 1092 | 526 | 744 | 473 | 455 | 343 | 246 | 209 | 532 | 431 | 301 | 440 | 352 |
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-on | cross-on | on | off | off | off | off | cross-off | off | off | off | off | off | off | off |
High Tide | 4:48AM1.47m | 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 | |||||||
Low Tide | 10:45PM0.08m | 10:48AM0.15m | 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 | ||||||
 |  |  |  | | |  | | |  |  | | | | | | | | | |
 | — | 6:46 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — |
 | 6:34 | — | 6:35 | — | — | 6:35 | — | — | 6:36 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — |
mm | 3 | 1 | — | — | — | — | 11 | 3 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 18 | 16 | 17 | 18 | 15 | 12 | 15 | 13 | 16 | 17 | 13 | 16 | 19 | 14 | 18 | 22 | 17 |
Feels °C | 18 | 12 | 12 | 11 | 10 | 9 | 7 | 8 | 8 | 6 | 9 | 10 | 7 | 8 | 10 | 7 | 14 | 19 | 13 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 12 | SW 12 | SSW 12 | SSW 11 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 14 | SW 13 | SW 12 | SW 14 | SW 13 |
| kJ | 295 | 190 | 142 | 88 | 79 | 367 | 1092 | 526 | 553 | 473 | 455 | 343 | 246 | 209 | 532 | 431 | 301 | 440 | 352 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SE 13 | SE 13 | WNW 8 | SW 18 | WSW 8 | SE 14 | S 7 | SW 13 | W 12 | W 12 | — | SSW 6 | SSW 15 | — | SW 16 | SSW 15 | — | — |
| kJ | 42 | 41 | 25 | 6 | 78 | 6 | 7 | 68 | 744 | 453 | 144 | — | 43 | 144 | — | 66 | 144 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 13 | SE 13 | SE 13 | — | SW 9 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 7 | 7 | 7 | — | 77 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 3 | NW 3 | NW 5 | NNW 4 | NW 5 | NW 5 | NNW 4 | ESE 3 | SSE 7 | SE 6 | SE 5 | SSE 6 | SE 5 | SE 6 | SE 6 | SE 6 | SE 5 | SE 6 | SE 5 |
| kJ | 1 | 5 | 60 | 28 | 70 | 106 | 15 | 1 | 240 | 133 | 92 | 168 | 60 | 110 | 178 | 97 | 84 | 160 | 51 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 14 | 30 | 130 | 22 | 140 | 188 | 0 | 0 | 302 | 0 | 185 | 216 | 0 | 46 | 10 | 4 | 0 | 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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