Surf Forecasts:
Bonza Bay surf forecast from 21 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 8AM (local time) - 5ft (1.6m), 15s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 2PM (local time) - 8ft (2.4m), 17s period, S swell with 3,270 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 11PM (local time) - 4ft (1.2m), 12s period with S 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 Friday (Aug 21) at 11PM. The primary swell is predicted to be 1.2m and 12s period with a secondary swell of 0.3m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Bonza Bay in the next 16 days are 2.4m 17s and forecast to arrive on Wednesday (Aug 26) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Friday (Aug 28) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 21st Aug) | 4ft (1.2m) 12s |
| Best Surf | 8AM (Tue 25th Aug) | 5ft (1.6m) 15s |
| Most Powerful | 2PM (Wed 26th Aug) | 8ft (2.4m) 17s |
Table - best surf conditions forecast for Bonza Bay over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s have a look at what’s coming for Bonza Bay.
The next couple of weeks start off with a bit of promise, but there’s some real ups and downs along the way. The first real standout is Friday morning, August 21st. We’ve got a solid 5 ft SSW swell rolling in with a 12-second period, giving the waves a nice bit of punch. The combined energy is sitting at a moderate 610. What really makes it special is the glassy conditions with a light 5 km/h southerly breeze. Water temp is 66°, which is a bit colder than normal for this time of year, so you might want a wetsuit. Bonza Bay is a river mouth setup, exposed to the south swell, and it’s fairly consistent. NW winds are offshore here, and a glassy morning like this is rare – get out there early for the cleanest waves.
After that, things get messy. Friday afternoon sees onshore winds, and by Saturday morning the swell drops to 2 ft with a strong 35 km/h WSW cross-offshore wind that’s actually making it clean, but the swell is too small to get excited about. Saturday afternoon the wind cranks up to 45 km/h from the SW, bumping the swell to 8 ft but with a short 7-second period and messy cross-chop – that’s one for the experts only, and even then it’s not great.
Sunday morning, August 23rd, the swell holds at 8 ft from the SW, with a 10-second period and a moderate cross-shore wind. The combined energy rockets up to 1955, which is strong, but the wind is creating a cross-chop and the surf quality is marginal. Sunday afternoon stays similar but with a cross-onshore wind.
Monday, the 24th, drops to 3 ft from the south with a 13-second period, but the wind is onshore again. Not worth paddling out for.
Tuesday, the 25th, sees a 5 ft SSW swell with a very long 15-second period, and the energy is strong at 1144. But the wind is light cross-onshore, putting small ripples on the face. That long period groundswell can be tricky at a beach break like Bonza, making it break a bit too straight. Still, if you’re patient, there might be a few clean ones.
Wednesday, the 26th, is the biggest of the first week – 7 ft from the south with a 17-second period in the morning, energy of 2735. That’s strong, but it’s cross-onshore at 10 km/h, so it’s a bit lumpy. By the afternoon it’s 8 ft and choppy. Not a clean day.
The rest of the first week and into the second week is a mixed bag of small, messy, or blown-out conditions. Thursday the 27th has a 5 ft south swell with a 16-second period but a fresh 35 km/h NE cross-shore wind – lumpy and messy. Friday the 28th morning is slightly better: 5 ft south swell, 14-second period, light onshore wind, with a score of 3. Still marginal.
The standout of the second week is Sunday morning, August 30th. The swell jumps to 10 ft from the SSW with a 14-second period, and the combined energy is a massive 3008. But here’s the catch – the wind is a fresh 30 km/h cross-shore, and the wave comment says the swell is too big for this break. That’s only for experts, and even then it’s going to be a wild, powerful beast. Not a beginner’s day.
Monday, August 31st, has a 6 ft south swell, 12-second period, light onshore wind, and moderate energy of 1004 – marginal but not terrible.
The rest of the week into early September is small, with 5 ft or less, and mostly from the east with short 9-second periods. The wind is often cross or cross-onshore, making it choppy and uninspiring.
For the best of the forecast, you’ve got to point to Friday morning, August 21st – that’s the real gem with glassy conditions and a decent 5 ft swell. The second best is probably Tuesday morning, August 25th, with the long period groundswell, but keep an eye on the wind. After that, it’s a lot of waiting for conditions to line up.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sat morning, min 14°C on Sun night). Winds increasing (calm on Fri morning, strong winds from the SW by Sat afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Very mild (max 19°C on Mon afternoon, min 14°C on Mon night). Winds increasing (calm on Mon morning, fresh winds from the NE by Wed night). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 12 | SSW 12 | S 12 | SSW 11 | SSW 7 | SW 9 | SW 10 | SSW 11 | SSW 11 | S 13 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 16 | S 17 | S 16 | S 13 | S 16 | S 16 | S 16 |
Wave Graph | |||||||||||||||||||||
598 | 494 | 397 | 200 | 627 | 1034 | 1450 | 467 | 337 | 361 | 213 | 566 | 1133 | 975 | 1297 | 2733 | 3021 | 1127 | 737 | 1321 | 1585 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross | cross-off | cross | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross |
High Tide | 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 | 3:38PM1.95m | 3:46AM1.93m | |||||||
Low Tide | 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 | 9:25AM0.43m | 9:44PM0.45m | ||||||||
6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | |
— | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 21 | 21 | 16 | 18 | 18 | 17 | 18 | 19 | 17 | 17 | 17 | 17 | 18 | 18 | 17 | 19 | 22 | 23 |
Feels °C | 18 | 17 | 17 | 15 | 13 | 9 | 14 | 14 | 17 | 16 | 17 | 15 | 16 | 15 | 16 | 15 | 13 | 12 | 13 | 15 | 20 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | S 12 | SSW 11 | ENE 7 | SSW 9 | SSW 10 | SSW 11 | SSW 11 | S 13 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 16 | S 17 | S 16 | S 13 | S 12 | S 16 | ENE 9 |
598 | 494 | 397 | 198 | 17 | 506 | 500 | 467 | 337 | 361 | 213 | 566 | 1133 | 975 | 1297 | 2733 | 3021 | 1127 | 649 | 1321 | 740 | |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | S 14 | — | SSW 13 | E 8 | E 9 | E 9 | E 10 | SSW 15 | E 10 | E 9 | E 9 | E 9 | E 10 | — | S 16 | S 16 | S 11 | S 16 |
12 | 12 | 12 | 200 | — | 131 | 5 | 6 | 6 | 7 | 43 | 7 | 6 | 6 | 2 | 2 | — | 427 | 737 | 311 | 1585 | |
Swell 3 Height (m) Direction Period (s) | NE 7 | — | — | E 6 | — | E 8 | — | — | SE 12 | SSE 11 | E 10 | SSE 12 | SE 11 | SE 11 | E 10 | — | — | — | — | — | — |
2 | — | — | 39 | — | 5 | — | — | 6 | 12 | 7 | 13 | 5 | 5 | 7 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | NE 3 | SW 3 | SSW 7 | SW 9 | SW 10 | — | — | — | — | — | — | — | — | — | E 4 | ENE 5 | ENE 7 | ENE 8 | ENE 9 |
— | — | 2 | 4 | 627 | 1034 | 1450 | — | — | — | — | — | — | — | — | — | 9 | 94 | 278 | 822 | 1312 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 455 | 239 | 129 | 435 | 25 | 52 | 23 | 0 | 4 | 23 | 0 | 4 | 23 | 23 | 129 | 810 | 435 | 273 | 273 | 34 |
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.











