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 1.3m 7s period and expected on Wednesday (Aug 26) at 8PM.
| 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
Right, grab a coffee, let's look at what's on the cards for Bonza Bay over the next couple of weeks. It's a bit of a mixed bag for us, but there are a couple of windows that should get you out of the house.
First up, Bonza Bay is a river mouth setup, exposed to the south swell. The water temp is sitting at 64°, which is a bit colder than normal for this time of year, so you might want an extra mil of rubber.
We've got a bit of a flat start with nothing doing for the first few days. The good news is that Friday morning, the 21st of August, looks like a little gem. The wind will be almost non-existent, glassy as you like, with a 5ft SSW groundswell at 12 seconds. The combined energy is moderate at 610. It won't be huge, but it'll be clean and fun. That's your first real standout.
The week after that is messy. Saturday the 22nd gets blown out by strong winds, and the swell is a short-period, lumpy mess. Sunday through to Wednesday the 26th is a write-off, with poor conditions and cross-shore winds ruining things. There's a bit of a pulse on Tuesday the 25th with a long 4ft SSW swell at 18 seconds, but the wind is a moderate cross-shore, so it's not going to be pretty.
Now, look ahead to Thursday the 27th of August. The morning session has a clean offshore wind from the NNW, with a 4ft S swell at 11 seconds. The combined energy is moderate (494). It's a solid call for a clean, workable wave, but it's not a massive standout.
After that, we trail off again. The wind is mostly onshore and the swell ebbs and flows. There's a pulse of energy on Sunday the 30th of August with an 8ft SSW swell, but the wind is a fresh cross-onshore, making it a lumpy, messy beast. That's expert territory, but it's not going to be clean.
The real highlight of the entire forecast comes on Wednesday the 2nd of September. The morning is glassy, with a 5ft E swell at 9 seconds and a combined energy of 624. That's the best on offer. It's a clean, solid wave that should be a joy.
Then we've got Thursday the 3rd of September with a bit of a 5ft SSW groundswell (13 seconds) and a combined energy of 1103, but the wind is light and onshore, making it a marginal call. Friday the 4th of September looks like a glassy, fun end to the run with a small 3ft SSW swell.
So, to wrap it up: don't bother this weekend or next week. Set your alarm for Friday morning the 21st for a glassy, clean session, and definitely circle Wednesday morning the 2nd of September. That's the one to get excited about.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sat morning, min 15°C on Thu morning). Winds increasing (calm on Thu night, strong winds from the SW by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Mon morning, min 14°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the NE by Tue night). | ||||||||||||||||||||
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 | S 12 | S 12 | S 14 | SSW 7 | SSW 9 | SSW 10 | S 11 | SSW 12 | S 13 | S 12 | S 16 | SSW 15 | SSW 18 | SSW 16 | S 14 | S 13 | S 12 |
Wave Graph | |||||||||||||||||||||
278 | 2329 | 1073 | 598 | 480 | 341 | 264 | 401 | 516 | 441 | 555 | 589 | 506 | 289 | 239 | 911 | 1081 | 917 | 553 | 414 | 344 | |
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-on | cross | 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 | 18 | 18 | 21 | 21 | 16 | 17 | 17 | 17 | 19 | 19 | 17 | 18 | 19 | 18 | 24 | 26 | 29 |
Feels °C | 14 | 15 | 17 | 17 | 17 | 16 | 14 | 14 | 10 | 14 | 14 | 17 | 17 | 16 | 15 | 17 | 17 | 14 | 20 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 14 | SSW 13 | SSW 12 | S 12 | S 12 | S 11 | E 7 | SSW 9 | SSW 10 | S 11 | SSW 12 | S 13 | S 12 | SSW 11 | SSW 15 | SSW 18 | SSW 16 | S 14 | S 13 | S 12 |
138 | 2329 | 1073 | 598 | 480 | 341 | 242 | 27 | 328 | 441 | 555 | 589 | 506 | 289 | 209 | 911 | 1081 | 917 | 553 | 414 | 344 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | E 8 | ENE 8 | E 8 | E 8 | E 8 | ENE 7 | — | SSW 12 | ENE 8 | E 8 | E 9 | E 10 | S 16 | S 16 | E 9 | SSW 13 | E 9 | ENE 6 | ENE 7 | E 8 |
213 | 21 | 23 | 12 | 12 | 5 | 65 | — | 202 | 6 | 5 | 6 | 7 | 46 | 239 | 6 | 492 | 1 | 46 | 75 | 115 | |
Swell 3 Height (m) Direction Period (s) | SSW 15 | — | — | — | — | — | S 14 | — | ENE 8 | ENE 8 | — | ENE 9 | — | E 10 | E 10 | ENE 9 | — | — | — | — | SSE 16 |
237 | — | — | — | — | — | 264 | — | 6 | 11 | — | 16 | — | 7 | 7 | 16 | — | — | — | — | 50 | |
Wind waves Height (m) Direction Period (s) | SSW 8 | — | — | — | — | ENE 4 | SW 4 | SSW 7 | SSW 9 | — | — | — | — | — | WSW 3 | — | ENE 9 | ENE 5 | ENE 6 | ENE 6 | — |
278 | — | — | — | — | 14 | 15 | 401 | 516 | — | — | — | — | — | 3 | — | 8 | 24 | 77 | 113 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 25 | 4 | 0 | 0 | 455 | 151 | 187 | 435 | 119 | 23 | 52 | 0 | 4 | 52 | 0 | 99 | 492 | 273 | 54 | 239 | 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.











