Surf Forecasts:
Koeel Bay surf forecast from 25 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 5PM (local time) - 11ft (3.5m), 14s period, SSW swell with onshore winds.
- Most powerful swell: Tuesday 1 Sep, 8PM (local time) - 11ft (3.5m), 14s period, SSW swell with 5,225 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 11AM (local time) - 2.5ft (0.7m), 16s 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 Wednesday (Aug 26) at 11AM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 0.7m and 11s. Another secondary swell of 1.3m 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 3.5m 14s and forecast to arrive on Tuesday (Sep 01) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Wednesday (Aug 26) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 26th Aug) | 2.5ft (0.7m) 16s |
| Best Surf | 5PM (Tue 1st Sep) | 11ft (3.5m) 14s |
| Most Powerful | 8PM (Tue 1st Sep) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Koeel Bay over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about what’s cooking at Koeel Bay.
We’ve got a bit of a mixed bag over the next couple of weeks. The early part of the week is looking clean but small, then we get a pulse of bigger swell towards the end of the first week and into the second, but the wind is going to be a pain. The real standout looks like it’ll be around Wednesday the 26th, with some lovely, clean conditions.
Let’s start with Tuesday the 25th. There’s a 4ft swell from the SW, but the forecast is a bit touch-and-go, with a moderate offshore breeze from the ESE at 15 mph. The combined energy is moderate (799). It’s surfable, but not the best of the window.
Now, Wednesday the 26th is where it’s at. Koeel Bay is a reef break, and it’s fairly consistent. Wednesday morning we’ve got a 2ft S swell, but with a 16-second period – that’s proper groundswell. The wind is light offshore from the E at 12 mph, so it’s going to be clean. The afternoon gets even better: the swell picks up to 3ft, still from the S with that long 16-second period, and the wind drops to a light 6 mph offshore. The water temp is sitting at 59°, which is about 1° cooler than average for this time of year – nothing too unusual. The combined energy is moderate (828). This is the pick of the fortnight. It’s not big, but for a clean, long-period reef wave, it’ll be offering some real quality.
Thursday the 27th is a write-off. The wind swings to a cross-on from the NW, and the swell bumps up to 5ft, but it’s messy. Poor conditions.
Friday the 28th is a bit better. The swell drops to 4ft from the S, period at 11 seconds, and the wind is a light cross-off from the S. It’s clean, but the energy is weak (347). A decent small-wave session.
Saturday the 29th is a no-go with onshore winds.
Sunday the 30th looks promising again. Morning has a 5ft SW swell, 13-second period, with a light cross-off from the SSE. The combined energy is moderate (681), and it’s clean. That’s another good one.
Monday the 31st is a bit marginal – the swell is there at 4ft, but the wind is cross-on, so expect some ripples.
Now, here’s where it gets interesting for the big wave crew. Tuesday the 1st of September we see a big jump in size. The morning has a 7ft SW swell, but the wind is a strong cross-on from the N at 15 mph, making it poor. The afternoon ramps up to 10ft from the SSW, with a strong onshore wind. The combined energy is very strong (3304), but with the wind howling onshore, it’s going to be a washing machine. This is only for the brave, and honestly, it looks more like a windy mess than a surf session.
Wednesday the 2nd of September is still big, with 8ft SSW swell, but the wind is cross-shore, making it a bit cleaner. This is solid, expert-level territory.
The rest of the first week of September sees a gradual drop in size. Thursday the 3rd, Friday the 4th, and Saturday the 5th all have some waves, but the wind is either onshore or the period drops off (short period, around 7-9 seconds), which means less punchy waves. The week starting the 7th is small again, with the occasional clean moment like Sunday the 6th, where we get a glassy 2ft SSW swell with a very long 16-second period, but it’s tiny.
Overall, if you want the best, aim for Wednesday the 26th of August. It’s the cleanest, most lined-up surf of the whole window. The big days around the 1st and 2nd of September are for experts only, and only if you can handle the wind.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Thu morning, min 11°C on Tue night). Winds decreasing (fresh winds from the ESE on Tue night, calm by Thu night). | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Sat night. Very mild (max 17°C on Fri night, min 10°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 | SSW 16 | SE 7 | S 12 | S 11 | S 11 | S 11 | S 11 | S 10 | SW 13 | SW 13 | SW 14 | WSW 9 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 |
Wave Graph | |||||||||||||||||||
437 | 266 | 529 | 438 | 502 | 501 | 344 | 277 | 175 | 138 | 183 | 164 | 316 | 241 | 528 | 319 | 298 | 198 | 375 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross | cross-on | cross-on | cross-off | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-off | off | glassy | cross-on | cross-on |
High Tide | 2:15AM1.35m | 2:37PM1.44m | 2:45AM1.43m | 3:05PM1.54m | 3:15AM1.49m | 3:33PM1.62m | 3:45AM1.53m | 4:02PM1.66m | 4:15AM1.53m | 4:31PM1.66m | 4:47AM1.50m | 5:03PM1.63m | |||||||
Low Tide | 8:17PM0.34m | 8:28AM0.22m | 8:47PM0.24m | 8:55AM0.14m | 9:16PM0.16m | 9:22AM0.08m | 9:45PM0.10m | 9:49AM0.06m | 10:14PM0.07m | 10:18AM0.06m | 10:45PM0.07m | 10:48AM0.10m | 11:18PM0.12m | ||||||
— | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | |
6:21 | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 9 | — | — | — | — | — | — |
Temp °C | 15 | 17 | 23 | 21 | 24 | 24 | 16 | 20 | 22 | 17 | 16 | 17 | 14 | 14 | 14 | 13 | 13 | 14 | 12 |
Feels °C | 10 | 14 | 21 | 19 | 22 | 21 | 16 | 20 | 21 | 16 | 14 | 15 | 13 | 11 | 10 | 10 | 11 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SSW 16 | SSW 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 10 | S 10 | SW 13 | SW 9 | SW 8 | SW 7 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 |
437 | 266 | 374 | 438 | 502 | 501 | 344 | 277 | 175 | 100 | 183 | 144 | 115 | 109 | 528 | 319 | 298 | 198 | 375 | |
Swell 2 Height (m) Direction Period (s) | S 6 | SSW 11 | SE 7 | S 15 | WSW 12 | SW 16 | SW 11 | SW 14 | SW 14 | SW 13 | S 11 | SW 14 | SW 13 | SW 13 | SSE 10 | S 7 | S 6 | S 6 | S 10 |
65 | 128 | 104 | 157 | 53 | 11 | 30 | 47 | 155 | 138 | 116 | 164 | 257 | 241 | 10 | 56 | 19 | 11 | 2 | |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SW 12 | S 16 | SW 12 | SE 9 | WSW 11 | SW 15 | WSW 11 | SSE 14 | S 13 | SSE 13 | S 11 | SSE 11 | SSE 11 | — | SE 10 | SE 10 | S 10 | SE 10 |
51 | 124 | 318 | 71 | 77 | 180 | 35 | 23 | 62 | 82 | 99 | 86 | 40 | 22 | — | 4 | 4 | 2 | 4 | |
Wind waves Height (m) Direction Period (s) | ESE 5 | SSE 7 | SE 7 | — | WNW 3 | W 3 | — | — | — | — | — | — | WSW 9 | — | — | — | — | — | NW 2 |
72 | 178 | 529 | — | 3 | 1 | — | — | — | — | — | — | 316 | — | — | — | — | — | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 10 | 0 | 0 | 4 | 14 | 22 | 0 | 0 | 15 | 4 | 14 | 22 | 185 | 15 | 47 | 0 | 0 | 29 | 14 |
Best forecast wave conditions in Overberg | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











