Koeel Bay Surf Break

Lat Long: 34.21° S 18.83° E

Koeel Bay Surf Forecast and Surf Report

Issued: 7 pm 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Koeel Bay sea temperature is
14.0° C
1.5° 

Koeel Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Koeel Bay surf forecast from 12 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 8AM (local time) - 4ft (1.2m), 19s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 13 Aug, 11AM (local time) - 5ft (1.5m), 18s period, SW swell with 1,327 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 8AM (local time) - 4ft (1.2m), 19s 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 (Aug 13) at 8AM. The primary swell is predicted to be 1.2m and 19s period with a secondary swell of 0.9m and 16s. 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 1.5m 18s and forecast to arrive on Thursday (Aug 13) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Aug 20) at 2AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 13th Aug)4ft (1.2m) 19s
Best Surf 8AM (Thu 13th Aug)4ft (1.2m) 19s
Most Powerful11AM (Thu 13th Aug)5ft (1.5m) 18s

Table - best surf conditions forecast for Koeel Bay over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let's take a good, long look at what Koeel Bay has in store for us over the next couple of weeks. It's a bit of a mixed bag, but there are some proper moments hiding in there.

Right off the bat, we're looking at a fairly exposed reef break that handles a south swell best. The water temp is sitting about average for this time of year, so no surprises there.

The first few days are a write-off, to be honest. Thursday the 13th and Friday the 14th are messy with onshore winds and poor surf. We've got a bit of energy on Thursday morning with combined swell energy at 1414, but the wind is wrong and the conditions are just not there. The weekend isn't much better, with Saturday the 15th offering only small 3ft waves from the southwest. It's clean, but barely worth paddling out for.

Now, here's the first real standout. Monday the 17th is your ticket. We've got a 5ft southwest swell rolling in with a period of 13 seconds, giving it some real push. The combined energy is a solid 632 in the morning, building to 838 by the afternoon. And the best part? It's glassy. Both morning and afternoon are showing glassy conditions. The wind is a slight air from the southwest, then swinging south. This is as clean as it gets, and the waves will have some shape to them. This is the one to circle on the calendar.

We get a bit of a lull after that with some onshore wind and rain showers on Tuesday the 18th, nothing special. Wednesday the 19th brings a bigger 5ft to 6ft swell from the south-southwest, but it's paired with a fresh offshore breeze from the southeast. The waves will be clean, but the energy is a bit all over the place. It's a bit of a high-performance day for experienced surfers only, with the swell size getting up there.

Another gap rolls in from Thursday the 20th through to Friday the 21st, with the swell dropping right back and the energy fading to under 400. Not worth getting wet for.

Then, hold onto your boardies. Saturday the 22nd and Sunday the 23rd are looking prime. Saturday morning starts clean with a light 3ft swell, but it's the afternoon that steals the show. We get a 5ft southwest swell with a 14-second period, and the combined energy hits 735. The wind is a light breeze from the south, clean and cross-off. The sets will have proper length and power. Sunday the 23rd is another clean day with a moderate offshore breeze and a consistent 4ft swell. This is a solid little run of good surf.

Monday the 24th keeps the good form going with moderate offshore winds and a 4ft southwest swell. The energy is still respectable at 638. A very good, consistent spell.

After that, the swell fades again through Tuesday the 25th and Wednesday the 26th, dropping to tiny 1ft waves with very low energy. Not much happening.

But don't write the forecast off yet. Looking ahead to Thursday the 27th, the afternoon brings a return to glory. We get a 5ft southwest swell with a 16-second period and the energy jumps back up to 1085. The wind goes glassy from the southeast. This is a long-period groundswell, which will wrap beautifully around this reef, offering some proper, powerful lines. And then Friday the 28th morning looks like the encore: another 5ft swell, glassy conditions, and a combined energy of 1145. This is a distant forecast, but if it holds, it could be the best of the whole run.

So, to sum it up: forget the first few days. Your best bets are Monday the 17th for the perfect glassy conditions and consistent waves, and then the Saturday 22nd through Monday 24th stretch for a longer run of clean, solid surf. Keep an eye on that final Thursday and Friday for a potential big finish. If you're a beginner, stick to the smaller days like Saturday the 15th or the 3ft to 3ft days later in the run. Anything over 5ft, like on Wednesday the 19th, is for the experienced crew only.

Stay wet, stay keen.

- Rusty

Short Range Forecast

Mostly dry. Warm (max 26°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Some drizzle, heaviest during Tue afternoon. Warm (max 20°C on Sun afternoon, min 14°C on Mon night). Wind will be generally light.

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
1
1
0
0
2
2
2
1
0
0
2
2
3
2
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SW
16
1.5
SW
18
1.3
SW
16
1.1
SW
16
0.9
SW
15
0.9
SW
15
0.9
SW
14
0.9
SW
14
0.9
SW
14
0.9
WSW
14
0.9
SW
15
1
SW
15
1.4
SW
14
1.4
SW
13
1.3
SW
13
1.2
SW
13
1.1
SW
12
1.3
SW
12
1.4
SSW
12
Wave Graph
Metric surfscale
Energy kJ
844
1327
943
611
360
355
308
264
264
328
318
418
721
632
569
503
380
455
541
Wind (km/h)
20
ENE
10
NNE
10
NW
15
N
25
N
15
NW
10
NE
5
WSW
5
SSE
10
NNW
20
NW
15
WNW
10
N
5
SW
5
S
10
NNW
15
NW
15
SW
20
SSE
Wind State
cross-off
cross
on
cross
cross-on
on
cross-off
glassy
cross-off
cross-on
cross-on
on
cross-on
glassy
glassy
cross-on
cross-on
cross-on
cross-off
High Tide
3:30AM1.59m
3:53PM1.71m
4:09AM1.58m
4:30PM1.72m
4:46AM1.53m
5:05PM1.67m
5:21AM1.45m
5:39PM1.58m
5:56AM1.35m
6:13PM1.45m
6:31AM1.23m
6:48PM1.31m
Low Tide
9:29PM0.05m
9:41AM-0.01m
10:09PM0.02m
10:17AM-0.00m
10:47PM0.04m
10:51AM0.05m
11:22PM0.10m
11:23AM0.14m
11:56PM0.20m
11:55AM0.25m
00:29AM0.31m
12:27PM0.38m
1:05AM0.43m
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:26
7:24
7:24
7:22
7:22
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:12
6:13
6:14
6:14
6:15
6:15
 mm
1
1
Temp °C
19
22
26
22
18
19
15
17
18
17
18
20
16
18
19
16
16
17
14
Feels °C
14
20
24
19
13
15
14
16
17
17
14
16
14
17
17
16
15
15
11
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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