Surf Forecasts:
Koeel Bay surf forecast from 15 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 5AM (local time) - 5.5ft (1.7m), 12s period, WSW swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 11PM (local time) - 6.5ft (2.0m), 13s period, SSW swell with 1,363 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 8PM (local time) - 3.5ft (1.1m), 14s 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 Saturday (Aug 15) at 8PM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.2m and 10s. 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 2.0m 13s and forecast to arrive on Thursday (Aug 20) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Friday (Aug 21) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 15th Aug) | 3.5ft (1.1m) 14s |
| Best Surf | 5AM (Tue 18th Aug) | 5.5ft (1.7m) 12s |
| Most Powerful | 11PM (Thu 20th Aug) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
Rusty here again. Same spot, but let’s talk in feet and miles per hour for the crew who think that way.
We’re locked into Koeel Bay for this whole run. A reef break that’s fairly consistent and loves a south swell. Water is running a bit colder than usual for the season – about 57°F, nearly three and a half degrees below average. You’ll want the 4/3.
The first decent look is Saturday the 15th with clean, glassy conditions. Swell is around 3ft from the southwest, light energy (335), but the glass makes it workable. Small but fun.
Sunday the 16th and Monday the 17th are blown out. Strong onshore and cross-onshore winds, choppy and messy. Not for paddling.
Tuesday the 18th flips the script. Offshore wind in the morning, clean lines, 5ft of southwest swell. Energy is building (666). A good session.
Wednesday the 19th through Friday the 21st is the window. Wednesday morning is a standout: glassy water, 5ft SSW swell (746), near calm wind. This is peak mid-week. Thursday pushes up to 6ft in the morning, hitting 6ft by the afternoon, energy surging past 1200. The wind stays clean. Friday morning goes back to glass with 5ft SSW (737). Perfect conditions.
Saturday the 22nd is rough – strong north winds, stay out. But Sunday the 23rd afternoon swings back hard: 6ft SSW with a 16 second period, energy of 1782, clean cross-off wind. That’s real groundswell working the reef.
Now the big one: Monday the 24th. This is the session to circle. 8ft of clean, glassy SSW groundswell, period a massive 17 seconds, energy hitting 3139. That’s serious size and power. Expert-only territory – too big for learners. The long period means sets are spaced out, but when they come, they are thick and lined up. Morning glass, afternoon clean cross-off. This is *the* day.
Tuesday the 25th is still good – glassy morning, 5ft SSW (808), fun and clean. The wave is dropping but still quality.
Wednesday the 26th is onshore junk. Skip it.
Thursday the 27th throws another big pulse: morning glass with 4ft SW swell, then afternoon jumps to 6ft with a 17 second period, energy spiking to 3196. The wind is light cross-shore, so not perfect, but that power is undeniable.
Friday the 28th is messy onshore again. Saturday the 29th has a clean morning window – offshore ESE wind, 5ft SW swell (1088), clean and lined up. A solid sneaky session.
Sunday the 30th fades with onshore slop and dropping swell. Done.
The standouts: Wednesday the 19th morning for clean fun, and Monday the 24th for the big, powerful groundswell if you can handle it. The reef will make the most of that long period.
Rusty out.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 13°C on Sun morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Fri morning, min 11°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 | SW 15 | WSW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SW 12 | SSW 12 | SW 12 | SW 12 | SSW 12 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 326 | 412 | 429 | 720 | 1034 | 721 | 525 | 628 | 666 | 891 | 878 | 746 | 587 | 578 | 830 | 1207 | 1207 | 737 | 532 | 387 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | on | cross | cross-on | cross-on | cross-off | off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | glassy | cross-on | cross-on |
High Tide | 5:05PM1.67m | 5:21AM1.45m | 5:39PM1.58m | 5:56AM1.35m | 6:13PM1.45m | 6:31AM1.23m | 6:48PM1.31m | 7:09AM1.12m | 7:28PM1.17m | 8:00AM1.00m | 8:28PM1.05m | 9:38AM0.93m | 10:23PM0.99m | |||||||
Low Tide | 11:22PM0.10m | 11:23AM0.14m | 11:56PM0.20m | 11:55AM0.25m | 00:29AM0.31m | 12:27PM0.38m | 1:05AM0.43m | 1:02PM0.51m | 1:50AM0.55m | 1:51PM0.63m | 3:13AM0.64m | 3:46PM0.71m | ||||||||
 |  | |  |  |  | | | | | | | | | | | | | | | |
 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — |
 | 6:14 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:17 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 17 | 19 | 15 | 17 | 18 | 15 | 16 | 17 | 14 | 16 | 16 | 14 | 16 | 16 | 13 | 18 | 18 | 14 |
Feels °C | 16 | 16 | 13 | 15 | 13 | 16 | 17 | 15 | 14 | 13 | 11 | 15 | 13 | 12 | 14 | 12 | 9 | 17 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 15 | WSW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SW 12 | SSW 12 | SW 12 | SW 12 | SSW 12 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 |
| kJ | 326 | 412 | 429 | 720 | 1034 | 721 | 525 | 628 | 666 | 891 | 878 | 746 | 587 | 578 | 830 | 1207 | 1207 | 737 | 532 | 387 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | SE 4 | SE 10 | — | — | — | SW 16 | SW 14 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 9 | 1 | 4 | — | — | — | 67 | 308 | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 16 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 42 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NNW 3 | W 5 | — | — | — | — | — | SSE 4 | SE 4 | E 4 | S 4 | — | — | SSE 4 | ESE 4 | ESE 6 | SE 6 | — |
| kJ | — | — | 1 | 60 | — | — | — | — | — | 11 | 11 | 10 | 21 | — | — | 22 | 24 | 107 | 52 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 14 | 18 | 14 | 4 | 14 | 19 | 0 | 0 | 46 | 0 | 0 | 0 | 0 | 0 | 15 | 0 | 0 | 29 | 14 |
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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