Koeel Bay Surf Break

Lat Long: 34.21° S 18.83° E

Koeel Bay Surf Forecast and Surf Report

Issued: 1 am 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Koeel Bay sea temperature is
15.0°C
0.6° 

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 13 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 8AM (local time) - 5ft (1.5m), 15s period, SSW swell with offshore winds.
  • Most powerful swell: Wednesday 16 Sep, 2AM (local time) - 5.5ft (1.7m), 15s period, SW swell with 1,204 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 8AM (local time) - 5ft (1.5m), 15s 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 Sunday (Sep 13) at 8AM. The primary swell is predicted to be 1.5m and 15s period with a secondary swell of 1.1m and 7s. Another secondary swell of 2.2m and 8s 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 1.7m 15s and forecast to arrive on Wednesday (Sep 16) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Thursday (Sep 17) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 13th Sep)5ft (1.5m) 15s
Best Surf 8AM (Sun 13th Sep)5ft (1.5m) 15s
Most Powerful 2AM (Wed 16th Sep)5.5ft (1.7m) 15s

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


The Lowdown

Alright, let’s get into it. This is Rusty, and I’m looking at the next couple of weeks for Koeel Bay. There’s some good stuff on the horizon, but it’s not going to be a straight run of perfect days. We’ll start with a solid Sunday morning, then a rough patch, and then things really come together again around the 22nd and 26th.

Let’s kick off with the standout session: Sunday morning, 13 September. Koeel Bay is a reef break, fairly consistent, and it’s firing for the experienced surfer. The water temperature is 59°, which is about average for this time of year. The wind is glassy—absolutely dead calm—and we’ve got a 4.6ft swell from the SSW with a 14-second period. That’s a groundswell, and with that period, it’s going to have some proper energy behind it. The combined swell energy is a strong 1483. It’s not too big for a good surfer, but it’s enough to get some proper rides. The crowd factor is only “sometimes,” so you’ve got a decent chance of some clean ones to yourself. This is the best on offer for the start of the run.

Sunday afternoon the same day, the wind swings to a light cross-shore from the SSW at 6 mph, and the swell drops a touch to 3.9ft. It’s still rideable, but the conditions are more marginal, so I’d get out there in the morning.

Now, Monday the 14th through to Tuesday the 15th is a write-off. We’ve got strong cross-onshore winds from the NNW and NW at 15-22 mph, and the swell gets smaller and messy. The combined energy drops right off to around 204-594, which is weak to moderate. Not worth paddling out.

Wednesday the 16th looks a bit better, especially the afternoon. We get a clean offshore wind from the SE at 19 mph, and the swell builds to 4.9ft from the W with a 13-second period. The combined energy jumps to 1577, which is strong. It’s a bit on the bigger side and the wind is fresh, so it’s more of a challenge for the experienced. The morning on the 16th is also clean but with a slightly smaller swell and a cross-off wind.

Thursday the 17th and Friday the 18th keep the clean offshore winds from the SE and ESE, with swell heights around 2.9ft to 4.3ft. The energy is moderate, and the conditions are clean, but the quality is still marginal. Not a standout, but a paddle could be worth it if you’re keen.

Saturday the 19th and Sunday the 20th, the wind goes glassy or light offshore, with 3.3ft to 4.3ft SSW swells. The combined energy is moderate, and the conditions are good. It’s not a top-tier day, but it’s a nice clean weekend session.

Monday the 21st, the winds pick up again from the SE at 15-19 mph, creating a clean but lumpy cross-offshore condition. The swell is around 3.6ft to 3.9ft, and the energy is moderate. I’d give it a miss unless you’re desperate.

Now, here’s the next big moment: Tuesday, 22 September. Morning starts glassy with a SSW wind at 3 mph, and the swell is a nice 4.6ft from the SW with a 17-second period. That’s a very long period groundswell, which is going to produce some clean, powerful waves. The combined energy is a very strong 1445. By the afternoon, the swell builds to 6.6ft from the SSW with a 16-second period, and the energy goes up to 2102. The wind is a light cross-offshore, so the waves will be clean. This is a serious session for the experienced crew. The wave direction is a little off from the optimum, but the quality is still excellent.

Wednesday the 23rd keeps the clean offshore winds from the SE at 19 mph, with a 4.9ft to 5.2ft SSW swell. The energy is strong but the conditions are a bit more marginal due to the fresh wind. Still, there’s a good wave in there.

Thursday the 24th, the wind drops to a light offshore, and the swell holds at 4.6ft to

Short Range Forecast

Heavy rain (total 31mm), heaviest during Tue night. Warm (max 23°C on Sun afternoon, min 12°C on Tue night). Winds increasing (calm on Sun morning, fresh winds from the NW by Tue afternoon).

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Wed morning. Very mild (max 18°C on Fri afternoon, min 11°C on Wed night). Mainly fresh winds.

Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
2
0
0
0
0
0
0
3
0
3
3
1
1
2
1
1
1
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SSW
14
1.2
SSW
14
0.9
SSW
13
0.8
SSW
12
0.7
SW
12
0.6
SSW
12
0.4
SW
18
1
SW
16
1.7
SW
15
1.2
SW
14
1.5
W
13
1.2
SW
13
1.3
SW
12
1.1
SW
12
1.1
SW
11
0.9
SSW
14
1.2
SW
13
1.1
SW
12
1
SW
12
1.1
SW
13
1.1
SW
13
Wave Graph
Metric surfscale
Energy kJ
785
493
295
190
142
88
79
496
1204
526
799
461
455
298
331
352
509
398
297
406
406
Wind (km/h)
0
ESE
10
SSW
15
N
25
NNW
35
NW
30
NNW
35
NNW
40
NW
15
S
30
SE
30
SE
20
ESE
25
SE
35
SE
25
ESE
30
ESE
30
ESE
20
E
5
S
10
ESE
10
ENE
Wind State
glassy
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
off
off
off
off
off
off
off
cross-off
glassy
off
cross-off
High Tide
4:30PM1.65m
4:48AM1.47m
5:00PM1.55m
5:18AM1.38m
5:30PM1.43m
5:48AM1.27m
6:00PM1.29m
6:21AM1.15m
6:35PM1.15m
7:04AM1.03m
7:25PM1.02m
8:33AM0.93m
9:30PM0.94m
Low Tide
10:19AM0.07m
10:45PM0.08m
10:48AM0.15m
11:13PM0.18m
11:16AM0.26m
11:41PM0.29m
11:45AM0.38m
00:11AM0.42m
12:15PM0.50m
00:48AM0.54m
12:56PM0.63m
1:54AM0.65m
2:45PM0.73m
4:47AM0.67m
cloud
rain showers
light rain
rain showers
part cloud
part cloud
cloud
cloud
heavy rain
light rain
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:47
6:46
6:43
6:43
6:41
6:39
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:34
6:35
6:35
6:36
6:37
6:37
6:37
 mm
1
1
2
27
3
1
Temp °C
21
23
18
16
19
16
15
17
16
13
14
13
15
17
14
16
18
14
17
21
17
Feels °C
22
23
19
14
14
11
10
10
10
9
7
7
9
10
9
10
11
9
15
18
14
  • 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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