Surf Forecasts:
Bonza Bay surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8PM (local time) - 7.5ft (2.3m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 20 Aug, 5PM (local time) - 8ft (2.4m), 14s period, SSW swell with 2,329 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 7.5ft (2.3m), 14s period with SSW swell.
Best Forecast Surf Conditions for Bonza Bay this week:
The surf forecast for Bonza Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 8PM. The primary swell is predicted to be 2.3m and 14s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Bonza Bay in the next 16 days are 2.4m 14s and forecast to arrive on Thursday (Aug 20) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 7s period and expected on Wednesday (Aug 26) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 20th Aug) | 7.5ft (2.3m) 14s |
| Best Surf | 8PM (Thu 20th Aug) | 7.5ft (2.3m) 14s |
| Most Powerful | 5PM (Thu 20th Aug) | 8ft (2.4m) 14s |
Table - best surf conditions forecast for Bonza Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
We’ve got a bit of a waiting game on our hands this outlook. The first real surf worth paddling out for isn’t until Friday morning, the 21st of August. Before that, Thursday the 20th is a write-off with messy, lumpy conditions and a cross-shore breeze that’s just not worth the effort.
So, Friday morning the 21st is where we start. Bonza Bay wakes up with some clouds overhead and a glassy, light air. The swell is a clean 5 ft from the SSW with a nice 12-second period. That’s a proper groundswell, and combined wave energy is moderate at 610. The wind is dead calm, glassy. This is a genuine standout for the period. Because the swell is long period, it’ll be better shaped than usual, but at a river break, keep an eye on it – it might fatten up a bit. The water is running a bit colder than normal for this time of year, sitting at 65°, which is a notable 3° below average.
Saturday the 22nd is a no-go. Strong winds and a drop in quality. Sunday the 23rd and Monday the 24th are only marginal, with cross-shore winds and weak, choppy energy. We’re looking at a few days of meh conditions.
Then, Tuesday morning the 25th of August is another absolute beauty. The sky is clear, there’s a slight air, and the wind is cross-offshore from the NNE. The swell is 5 ft from the SSW, but the period is a very long 15 seconds – that’s proper groundswell energy. The combined energy is strong at 1047. This is for experienced surfers. The long period means it’ll be powerful and well-shaped, but at a river break like Bonza, it might be a bit too straight for some. Expect clean, lined-up sets. Crowds are sometimes a factor here, but with a morning this good, it’s worth the gamble.
The rest of the week into early September is pretty grim. We get a few days of cross-shore chop and poor conditions. The wind keeps shifting, and the swell energy drops off. There’s a big spike in size on Sunday the 30th of August, with 10 ft to 12 ft from the SSE, but the period is short and the wind is onshore. That kind of size at this break is not for paddling – it’s more of a kite-surfing setup if anything.
The last real glimmer comes on Wednesday morning, 2nd of September. The swell is 6 ft from the SSW with a 13-second period, combined energy at 946. But the wind is a moderate cross-shore from the ENE, which will put a bit of a chop on it. It’s marginal, not a standout.
Overall, the best of the lot is Friday morning the 21st for the glassy conditions, and Tuesday morning the 25th for the power and size. Get out there if you can.
Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Sat morning, min 15°C on Fri night). Winds increasing (calm on Thu night, strong winds from the SW by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Tue afternoon, min 14°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
AM | PM | 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) | SSW 8 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | S 12 | SSW 11 | SSW 8 | SSW 10 | SSW 10 | S 11 | S 11 | S 9 | SSW 12 | S 15 | SSW 15 | S 16 | SSW 15 | S 14 | S 12 | S 12 |
Wave Graph | |||||||||||||||||||||
271 | 2329 | 1073 | 598 | 494 | 397 | 198 | 546 | 1420 | 492 | 535 | 396 | 127 | 117 | 574 | 1035 | 548 | 827 | 529 | 309 | 285 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | glassy | glassy | cross-on | cross | cross-off | cross | cross-off | cross | cross-on | cross-off | cross | cross | cross-off | cross-off | cross-on | cross | cross | cross | cross-off |
High Tide | 8:23PM1.45m | 9:02AM1.30m | 10:17PM1.34m | 12:22PM1.30m | 00:43AM1.39m | 1:40PM1.43m | 1:43AM1.50m | 2:17PM1.58m | 2:20AM1.63m | 2:46PM1.72m | 2:50AM1.74m | 3:12PM1.84m | 3:18AM1.85m | ||||||||
Low Tide | 1:53PM0.90m | 2:50AM1.00m | 3:07PM1.05m | 5:23AM1.04m | 6:17PM1.07m | 7:15AM0.93m | 7:39PM0.95m | 7:59AM0.79m | 8:18PM0.81m | 8:30AM0.65m | 8:48PM0.68m | 8:58AM0.53m | 9:16PM0.55m | ||||||||
6:41 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | |
— | 5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 17 | 19 | 18 | 22 | 21 | 17 | 17 | 17 | 16 | 19 | 19 | 16 | 19 | 20 | 18 | 20 | 21 | 23 |
Feels °C | 14 | 14 | 17 | 17 | 17 | 17 | 16 | 13 | 11 | 14 | 14 | 15 | 17 | 16 | 13 | 18 | 17 | 15 | 17 | 17 | 19 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | S 12 | SSW 11 | S 14 | SSW 10 | SSW 10 | S 11 | S 11 | S 9 | SSW 12 | S 15 | SSW 15 | SSW 13 | SSW 15 | S 14 | S 12 | ENE 7 |
159 | 2329 | 1073 | 598 | 494 | 397 | 198 | 388 | 731 | 492 | 535 | 396 | 127 | 117 | 574 | 1035 | 440 | 827 | 529 | 309 | 191 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | E 8 | ENE 8 | E 8 | E 8 | E 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | E 8 | E 9 | SSW 13 | S 8 | E 10 | E 9 | S 16 | E 9 | — | S 16 | S 12 |
169 | 21 | 22 | 12 | 12 | 5 | 82 | 18 | 6 | 6 | 5 | 6 | 102 | 42 | 7 | 6 | 548 | 1 | — | 81 | 285 | |
Swell 3 Height (m) Direction Period (s) | SSW 15 | — | — | NE 7 | — | — | S 14 | — | — | E 9 | — | — | SSE 11 | E 10 | SE 11 | SE 12 | E 9 | — | SE 12 | — | S 16 |
237 | — | — | 2 | — | — | 198 | — | — | 2 | — | — | 12 | 7 | 5 | 6 | 6 | — | 6 | — | 131 | |
Wind waves Height (m) Direction Period (s) | SSW 8 | — | — | — | — | ENE 4 | SW 3 | SSW 8 | SSW 10 | — | — | NE 3 | — | S 3 | — | — | — | ENE 3 | ENE 5 | ENE 6 | ENE 7 |
271 | — | — | — | — | 8 | 6 | 546 | 1420 | — | — | 2 | — | 6 | — | — | — | 4 | 55 | 182 | 344 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 25 | 52 | 0 | 0 | 455 | 204 | 168 | 440 | 134 | 0 | 52 | 0 | 4 | 52 | 0 | 0 | 455 | 24 | 273 | 273 | 0 |
Best forecast wave conditions in Eastern Cape - Wild Coast | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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Information about the Bonza Bay Surf forecast
The above surf forecast table for Bonza Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bonza Bay can be found by selecting the local surf guide option on the grey menu. Our Bonza 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 (Bonza 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 Bonza 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.
Bonza Bay is 7 km (4 miles) from the city of East London. If you plan a holiday in Eastern Cape - Wild Coast, look for hotels and other accommodation in East London. East London has rooms for a wide range of budgets as well as car hire and transport links.











