Big Bay Surf Break

Big Bay Surf Forecast and Surf Report

Lat Long: 33.79° S 18.46° E

Issued: 1 am 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Big Bay sea temperature is
13.2° C

2.4°C colder than average for this time of year

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


Big Bay surf forecast from 3 Jul 2026:

  • Best quality surf: Sunday 5 Jul, 11PM (local time) - 7ft (2.1m), 12s period, WSW swell with glassy winds.
  • Most powerful swell: Wednesday 8 Jul, 8PM (local time) - 8ft (2.5m), 16s period, SW swell with 3,411 kJ wave energy.
  • Next surfable swell (1★+): Sunday 5 Jul, 8PM (local time) - 4.5ft (1.4m), 9s period with WSW swell.

Best Forecast Surf Conditions for Big Bay this week:

The surf forecast for Big Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jul 05) at 8PM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 0.9m and 12s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Big Bay in the next 16 days are 2.5m 16s and forecast to arrive on Wednesday (Jul 08) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Wednesday (Jul 08) at 11PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 5th Jul)4.5ft (1.4m) 9s
Best Surf11PM (Sun 5th Jul)7ft (2.1m) 12s
Most Powerful 8PM (Wed 8th Jul)8ft (2.5m) 16s

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


Updates in  hr  min  s Forecast update imminent

Alright, Rusty here. Let’s have a look at what we’ve got for Big Bay.

Right now, the ocean is pretty quiet and it’s going to stay that way for a few days. There’s nothing good on offer until we get past the first weekend. Then things wake up in a big way starting Monday, July 6th.

We start the window on Monday morning the 6th. The swell picks up to a solid 6ft out of the SW, with a nice clean texture thanks to a light offshore breeze from the east. That’s a proper groundswell with a 12-second period, and the combined energy is pumping at (1499). This one’s for experienced surfers only—anything over 5ft at this break is already too big for beginners, and at 6ft it’s pushing into expert territory. The water’s running at 56°, which is a whopping 4° colder than normal, so you’ll want a thick suit.

That Monday morning session is the standout of the whole run. Clean conditions, proper SW groundswell lining up perfectly with the optimum direction, and you’ll have it glassy early. The wind stays good into the afternoon with a gentle cross-shore, but the morning is where it’s at.

Tuesday the 7th keeps the same energy with 7ft SW swell at 12 seconds, and again clean cross-off winds all day long. Wednesday the 8th pushes up even bigger—8ft SW with a 13-second period, absolutely cooking with combined energy over (2800). That’s moderate-to-strong wave energy and only for the crew who know what they’re doing. The morning is clean, but the afternoon sees a bit more breeze, though still cross-off.

Thursday the 9th is another cracker. 7ft SW swell at 14 seconds, with true offshore wind from the ESE in the morning. That’s as good as it gets for this stretch. The afternoon holds clean too with light cross-off.

Friday the 10th still has solid 6ft SW swell and clean conditions, both morning and afternoon. By Saturday the 11th, the swell drops to 4ft, but the morning is glassy—dead calm. That’s a fun size for a wider range of surfers. After that, Sunday the 12th starts to get a bit choppy and the surf quality fades.

Then there’s a big gap. From Sunday afternoon the 12th through to Wednesday morning the 15th, it’s mostly messy with fresh onshore winds and poor conditions. Not worth paddling out.

Wednesday morning the 15th brings a surprise—4ft of WNW swell, glassy conditions. That’s a nice little window for a quick session. But the real beast shows up on July 16th: 10ft SW swell with a 15-second period, delivering combined energy over (3000). That’s massive. Huge. This is only for the most experienced surfers. The wind is light but cross-onshore, so it won’t be perfect, but the power is undeniable. That one is worth marking on your calendar, but it’s far out so keep an eye on it.

After that, the end of the run gets pretty ragged with onshore winds and dropping swell. Nothing to get excited about on the 17th or 18th.

So the clear winner here is Monday morning, July 6th at Big Bay. Clean, solid SW groundswell, light offshore wind, and that perfect early-morning stillness. Don’t sleep on it.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Sun afternoon, min 11°C on Fri morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Mon afternoon, min 14°C on Wed night). Wind will be generally light.

Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
0
1
2
1
1
4
4
3
4
4
4
4
4
3
4
4
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
SW
13
1.6
W
8
1
SW
12
0.5
SW
16
0.7
SW
15
0.9
SW
14
0.8
SW
13
1.2
WSW
9
2.3
WSW
12
1.8
SW
12
2.2
SW
13
2.1
SW
12
2
SW
12
2
SW
12
2.3
SW
13
2.3
SW
13
2.3
SW
13
2.3
SW
15
2.1
SW
14
1.8
SW
14
2.3
SSW
13
Wave Graph
Metric surfscale
Energy kJ
459
341
259
129
232
301
215
238
1422
865
1480
1276
1107
1058
1600
1904
1904
2178
1665
1336
1753
Wind (km/h)
20
NNW
15
NW
15
NNE
15
N
15
NW
10
NNE
10
NNW
5
WNW
5
NE
5
E
15
SW
5
SSE
5
SE
5
S
10
SSE
15
SSE
20
SSE
15
SE
15
ESE
10
SSE
10
ESE
Wind State
cross-on
on
cross
cross
cross-on
cross
cross-on
on
glassy
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
off
High Tide
5:31PM1.40m
5:37AM1.30m
6:06PM1.39m
6:15AM1.25m
6:44PM1.37m
6:59AM1.20m
7:27PM1.34m
7:53AM1.14m
8:20PM1.31m
9:01AM1.10m
9:26PM1.29m
10:21AM1.10m
10:42PM1.29m
Low Tide
11:12AM0.21m
11:39PM0.33m
11:44AM0.24m
00:16AM0.35m
12:19PM0.29m
00:58AM0.37m
12:59PM0.35m
1:48AM0.38m
1:49PM0.41m
2:50AM0.40m
2:52PM0.47m
4:03AM0.39m
4:12PM0.49m
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:50
7:50
7:50
7:50
7:50
7:50
7:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:49
5:49
5:49
5:50
5:50
5:51
5:51
 mm
Temp °C
12
15
14
13
16
15
16
17
16
16
18
16
16
18
16
17
18
15
16
19
17
Feels °C
7
10
11
9
12
13
13
14
15
16
17
16
15
17
15
15
15
13
14
17
15
Swell 1
Height (m)
Direction
Period (s)
1.2
SW
13
1.1
SW
11
1.3
W
8
0.7
SW
8
1.3
W
8
1.5
WSW
8
1.1
W
8
1.2
WSW
9
2.3
WSW
12
1.8
SW
12
2.2
SW
13
2.1
SW
12
2
SW
12
2
SW
12
2.3
SW
13
2.3
SW
13
2.3
SW
13
2.3
SW
15
2.1
SW
14
1.8
SW
14
2.3
SSW
13
Energy kJ
459
326
198
70
217
300
161
238
1422
865
1480
1276
1107
1058
1600
1904
1904
2178
1665
1336
1753
Swell 2
Height (m)
Direction
Period (s)
0.5
WSW
11
0.4
S
9
1
SW
12
0.6
SW
11
0.7
SW
15
0.9
SW
14
0.8
SW
13
0.8
SW
13
0.2
WSW
18
1.6
WSW
11
1.1
W
11
1.1
W
11
1
W
11
0.7
W
11
0.6
W
10
1.3
SW
17
1.3
SW
16
1.3
S
8
1.6
S
13
0.1
W
16
Energy kJ
65
23
259
71
232
301
215
196
31
634
307
295
233
112
68
929
943
187
848
5
Swell 3
Height (m)
Direction
Period (s)
0.3
SSE
8
0.3
SW
19
0.4
SW
18
0.5
SW
16
0.6
SW
10
0.2
S
8
0.7
WSW
10
0.1
SW
19
0.1
SW
24
0.2
WSW
22
0.5
SW
20
Energy kJ
13
57
111
129
63
6
92
14
22
46
190
Wind waves
Height (m)
Direction
Period (s)
1.7
WNW
8
1.6
W
8
1
WNW
8
1.5
S
6
1.6
SSE
7
Energy kJ
366
341
123
164
251
Nearest Offshore or Glassy
Rating
(10 max)
2
2
3
1
3
3
2
2
4
4
4
4
4
4
4
4
5
4
4
4
4
Distance (km)
36
29
2
36
10
2
2
7
0
0
14
0
0
0
0
0
34
0
0
0
0
Best forecast wave conditions in Cape Town
Rating
(10 max)
2
2
3
1
3
3
2
2
4
4
4
4
4
4
4
5
5
4
4
5
4
Best forecast wave conditions in South Africa
Rating
(10 max)
5
5
5
4
4
4
4
3
4
4
4
4
4
4
4
5
5
5
5
5
4
Header Global
Rating
(10 max)
9
5
9
5
6
8
5
9
7
5
9
9
8
6
5
9
9
9
5
5
6
  • Map Icons:
  • Break
  • 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 Big Bay Surf forecast

The above surf forecast table for Big Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Big Bay can be found by selecting the local surf guide option on the grey menu. Our Big 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 (Big 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 Big 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.

Big Bay is 8 km (5 miles) from the very large city of Robben Island. If you plan a holiday in Cape Town, look for hotels and other accommodation in Robben Island. Robben Island has rooms for a wide range of budgets as well as cheap car hire and transport links.

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