Koeel Bay Surf Break

Lat Long: 34.21° S 18.83° E

Koeel Bay Surf Forecast and Surf Report

Issued: 7 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Koeel Bay sea temperature is
13.8° C
1.8° 

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 17 Aug 2026:

  • Best quality surf: Tuesday 18 Aug, 8AM (local time) - 5ft (1.5m), 13s period, SW swell with offshore winds.
  • Most powerful swell: Thursday 20 Aug, 8AM (local time) - 8ft (2.5m), 13s period, SSW swell with 2,254 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 18 Aug, 2AM (local time) - 4.5ft (1.3m), 13s 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 Tuesday (Aug 18) at 2AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.9m and 14s. 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 2.5m 13s and forecast to arrive on Thursday (Aug 20) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Monday (Aug 24) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Tue 18th Aug)4.5ft (1.3m) 13s
Best Surf 8AM (Tue 18th Aug)5ft (1.5m) 13s
Most Powerful 8AM (Thu 20th Aug)8ft (2.5m) 13s

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


The Lowdown

Right, Rusty here again. Let's take a squiz at Koeel Bay for the next couple of weeks.

This is a reef break for the intermediate crew, and it's fairly consistent, so there's a decent run of waves to talk about. The water temp is about average for the time of year, nothin' too out of the ordinary.

The action kicks off on Tuesday, the 18th of August. Tuesday morning is pumpin' with a 6ft swell coming from the SSW, a 12-second period, and a cross-off wind from the SSE keeping it clean. The combined energy is strong at 1691, but it's on the bigger side, so it's one for the experienced crew. The afternoon fades a bit with tide issues, but there's still a 6ft swell.

Wednesday the 19th is a bit of a dud with cross-shore winds puttin' a wobble on things, even with 5-6ft of swell. Not worth the paddle.

The first real standout comes Thursday morning, the 20th of August. We've got a solid 8ft SSW swell with a 13-second period, and the combined energy is a strong 1891. The wind is a clean cross-off from the SSE. This is big, powerful groundswell, and for a reef break, that's a treat. It's well over the 5ft mark, so it's experts-only territory.

Friday the 21st is a beauty. The morning delivers a clean 5ft SSW swell with a light cross-off breeze. The energy is back to a more moderate 882, and the wind is near glassy. This is the kind of size you can really have fun on.

The weekend goes a bit pear-shaped. Saturday the 22nd has onshore winds and lumpy conditions, with the swell jumpin' to 7ft in the arvo but it's messy. Sunday the 23rd swings back to clean conditions with a 6ft swell and cross-off wind in the morning, energy up to 1579 (strong), but it fades out later.

Monday the 24th is small and clean – 2ft to 4ft – good for a longboard session.

The next standout is on Tuesday the 25th of August. You've got a 5ft SW swell, but the period stretches out to a very long 14 seconds. That's groundswell energy, and the wind turns offshore from the ESE. The afternoon looks very good, with clean conditions and energy at 943 (moderate). On a reef, that long period will wrap in perfectly.

Then we hit a bit of a lull. From Wednesday the 26th through Sunday the 30th, expect onshore winds and generally poor conditions. There's a pulse on the 28th with a 6ft to 7ft SW swell and a very long 16-second period, but the wind is messy. The energy is huge – 2069 on Friday morning – but it's all blown out.

Finally, the real gem is Sunday the 30th of August. The morning has a 6ft SW swell with a 14-second period, offshore wind from the east, and energy at 1512 (strong). Then Sunday afternoon… it goes glassy. A clean 7ft SW groundswell with that same long period and not a breath of wind. This is the best session of the whole outlook. It's a true standout. Just a heads up, this spot can get a crowd "sometimes", and with glass like that, you won't be alone.

The first few days of September look average again until Wednesday the 2nd, which finishes the run with a glassy, small 4ft morning.

So, for the big, clean power, Thursday the 20th is your heavyweight. But for the long-period perfection, Sunday the 30th of August is the one. That arvo session is a dream.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Mon night. Very mild (max 16°C on Tue afternoon, min 12°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Fri afternoon, min 11°C on Thu night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
4
2
3
2
2
3
4
2
3
3
2
0
0
0
4
4
1
3
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
13
1.8
SW
12
1.9
SSW
13
1.9
SW
12
1.7
SW
12
1.6
SW
12
1.7
SSW
13
2.4
SSW
13
2
SSW
12
1.6
SSW
12
1.4
SSW
11
1.3
SSW
11
1.3
SSW
11
1.2
SW
11
2.1
SSW
12
2.2
SW
13
1.7
SSW
12
1.3
SSW
10
1.5
SSW
10
Wave Graph
Metric surfscale
Energy kJ
628
1025
1180
1043
864
718
998
1891
1192
722
495
403
359
347
1174
1503
835
356
407
Wind (km/h)
0
NW
15
SSE
20
SSE
10
E
10
SSW
5
WSW
5
ESE
15
SE
20
SSE
15
ESE
10
SSE
15
S
20
NNW
30
N
15
NNW
10
S
10
S
20
SSE
15
SE
Wind State
glassy
cross-off
cross-off
off
cross
cross-on
off
cross-off
cross-off
off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
off
High Tide
6:31AM1.23m
6:48PM1.31m
7:09AM1.12m
7:28PM1.17m
8:00AM1.00m
8:28PM1.05m
9:38AM0.93m
10:23PM0.99m
11:53AM0.96m
00:09AM1.05m
1:00PM1.07m
1:05AM1.15m
Low Tide
00:29AM0.31m
12:27PM0.38m
1:05AM0.43m
1:02PM0.51m
1:50AM0.55m
1:51PM0.63m
3:13AM0.64m
3:46PM0.71m
5:32AM0.63m
6:06PM0.67m
6:47AM0.54m
7:07PM0.57m
rain showers
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:20
7:20
7:18
7:16
7:16
7:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:15
6:15
6:16
6:16
6:17
6:19
6:19
 mm
1
Temp °C
15
15
16
13
14
16
14
14
15
12
16
18
13
14
16
15
14
15
13
Feels °C
15
13
13
9
12
14
14
12
11
8
14
16
13
9
12
14
12
11
10
  • Map Icons:
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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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