Surf Forecasts:
Koeel Bay surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8PM (local time) - 6ft (1.8m), 12s period, SSW swell with offshore winds.
- Most powerful swell: Tuesday 25 Aug, 5AM (local time) - 5.5ft (1.7m), 14s period, SW swell with 1,220 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 6ft (1.8m), 12s 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 Thursday (Aug 20) at 8PM. The primary swell is predicted to be 1.8m and 12s period. 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 14s and forecast to arrive on Tuesday (Aug 25) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Tuesday (Aug 25) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 20th Aug) | 6ft (1.8m) 12s |
| Best Surf | 8PM (Thu 20th Aug) | 6ft (1.8m) 12s |
| Most Powerful | 5AM (Tue 25th Aug) | 5.5ft (1.7m) 14s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's dial into the Koeel Bay picture. We've got a bit of a slow start this week, with the real action firing up next week. The water is sitting at 58°, which is a bit colder than normal for this time of year, so you'll want a good 4/3 or maybe even a hood if you're sitting out there for a session.
The first real standout session is Friday morning, the 21st of August. We've got a clean 5ft SSW groundswell with a solid 11-second period. The wind is light and offshore from the ESE, which is going to groom the reef beautifully. The combined swell energy is strong, measuring in at 940. It's not huge, but it's going to be pure and offering up some nice lined-up waves. The afternoon holds up well too with similar conditions, but the morning is the pick of the day.
After that, the surf drops off quickly. Saturday is a dead loss with poor surf, and the early part of next week is a lot of marginal, choppy, or cross-onshore stuff. Tuesday the 25th of August is worth a mention though. We've got a moderate offshore breeze from the ESE and a solid 5ft SW groundswell at 14 seconds. The energy is still strong (924), and it's very clean. It's a good option if you can get out.
Now, the real excitement is for the first week of September. Wednesday the 2nd of September is a big one. The forecast is showing a massive 12ft SW groundswell with a long 15-second period. The combined energy is absolutely pumping at 5020. This is expert territory. The wind is a moderate cross-onshore, so it's going to be a heavy, choppy, and powerful affair. This break might actually be more interesting for the kite crew than paddle surfing. It's a long-range call, so it's promising but not a lock just yet.
The following Thursday morning, the 3rd, it's still a solid 8ft, so still only for the experienced crew, with a light cross-onshore breeze. Things settle down by Friday the 4th of September afternoon with a glassy 5ft SW swell, which will be a nice, clean finisher to the run.
So, to sum it up: Friday 21st August is your best bet this week. Tuesday 25th is a solid back-up. And keep an eye on the first week of September for the big stuff. The gaps in between are a few days of flat or poor conditions, but it's worth the wait.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Fri afternoon, min 11°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Wed morning, min 12°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 13 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 12 | SW 12 | SW 13 | SW 13 | SSW 12 | SW 11 | SW 14 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | S 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1211 | 722 | 560 | 515 | 322 | 291 | 365 | 671 | 629 | 581 | 464 | 373 | 293 | 905 | 924 | 686 | 380 | 248 | 170 | 164 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | glassy | cross-on | cross-on | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | on | cross-off | on |
High Tide | 8:28PM1.05m | 9:38AM0.93m | 10:23PM0.99m | 11:53AM0.96m | 00:09AM1.05m | 1:00PM1.07m | 1:05AM1.15m | 1:38PM1.20m | 1:43AM1.25m | 2:09PM1.32m | 2:15AM1.35m | 2:37PM1.44m | 2:45AM1.43m | |||||||
Low Tide | 3:13AM0.64m | 3:46PM0.71m | 5:32AM0.63m | 6:06PM0.67m | 6:47AM0.54m | 7:07PM0.57m | 7:28AM0.43m | 7:45PM0.45m | 8:00AM0.32m | 8:17PM0.34m | 8:28AM0.22m | 8:47PM0.24m | ||||||||
 |  | | |  | |  | | | | | | | | | | | | | | |
 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — |
 | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:21 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 13 | 16 | 20 | 16 | 16 | 18 | 15 | 16 | 16 | 13 | 16 | 16 | 14 | 18 | 24 | 22 | 28 | 28 | 22 |
Feels °C | 12 | 10 | 14 | 18 | 16 | 13 | 16 | 15 | 14 | 13 | 11 | 13 | 12 | 10 | 13 | 20 | 19 | 25 | 26 | 20 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 12 | SW 12 | SW 13 | SW 13 | SSW 12 | SW 11 | SW 11 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SSW 10 | S 10 |
| kJ | 1211 | 722 | 560 | 515 | 322 | 291 | 365 | 671 | 629 | 581 | 464 | 373 | 263 | 905 | 924 | 686 | 380 | 248 | 170 | 164 |
Swell 2 Height (m) Direction Period (s) | — | — | SSW 11 | SSW 10 | SSW 14 | WSW 10 | SW 17 | SW 15 | — | — | — | — | SSW 14 | SSW 10 | — | — | S 11 | S 10 | SW 12 | WSW 12 |
| kJ | — | — | 380 | 310 | 65 | 198 | 11 | 55 | — | — | — | — | 115 | 120 | — | — | 58 | 87 | 169 | 93 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SSW 14 | — | — | — | — | — | — | — | SW 14 | — | — | — | SW 13 | SSE 6 | SSE 7 | S 14 |
| kJ | — | — | — | — | 118 | — | — | — | — | — | — | — | 293 | — | — | — | 46 | 26 | 18 | 60 |
Wind waves Height (m) Direction Period (s) | — | ESE 3 | ESE 4 | SE 5 | — | NNW 2 | — | — | — | S 4 | — | — | SSE 4 | SE 4 | SE 4 | SE 5 | SE 6 | — | — | — |
| kJ | — | 2 | 23 | 56 | — | 1 | — | — | — | 11 | — | — | 19 | 28 | 45 | 94 | 80 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 15 | 0 | 0 | 0 | 0 | 4 | 18 | 0 | 0 | 15 | 10 | 15 | 34 | 0 | 0 | 0 | 0 | 14 | 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.
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