Surf Forecasts:
Bonza Bay surf forecast from 9 Sep 2026:
- Best quality surf: Monday 14 Sep, 8PM (local time) - 8ft (2.5m), 10s period, E swell with offshore winds.
- Most powerful swell: Monday 14 Sep, 5PM (local time) - 10ft (3.0m), 10s period, E swell with 1,591 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 8AM (local time) - 2ft (0.6m), 10s period with SSE 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 Wednesday (Sep 09) at 8AM. The primary swell is predicted to be 0.6m and 10s period. 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 3.0m 10s and forecast to arrive on Monday (Sep 14) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 10s period and expected on Monday (Sep 14) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 9th Sep) | 2ft (0.6m) 10s |
| Best Surf | 8PM (Mon 14th Sep) | 8ft (2.5m) 10s |
| Most Powerful | 5PM (Mon 14th Sep) | 10ft (3.0m) 10s |
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 16-day window ahead for Bonza Bay, and it’s a bit of a mixed bag. A lot of the weekdays are looking pretty average, with onshore and cross-shore winds messing with things. The water temp is sitting about average for this time of year, so nothing wild there.
The first real bit of hope shows up on Sunday morning, September 13th. There’s a long-period groundswell rolling in from the SSW at 4ft, with a period of 16 seconds. The combined energy is a solid 1386 (moderate to strong), but the wind is a light cross-onshore, so it’ll be a bit bumpy. It’s a marginal call, but for a mellow Sunday session, you might get a few clean ones. The energy is good, but the wind is just enough to keep it from being great.
Then we get a bit of a lull through the middle of the week. The standout – and I mean the real standout – is Monday morning, September 21st. The forecast is calling for a serious 10ft swell from the S, with a 17-second period. That’s a massive amount of energy, with a combined energy reading of 5343 (very strong). The wind is a clean offshore from the SW, so the face will be smooth. But look, this is a river mouth break, so with that much size and power, it’s a beast. This is for experienced surfers only. The swell direction is also a cross-off, which is perfect for this spot. It’s a long ways out, so treat it as a promising but not locked-in call.
If the Monday swell is too gnarly, keep an eye on Wednesday morning, September 23rd. The wind goes glassy, dead calm, with an 8ft E swell (8-second period). The combined energy is 1853 (strong). The short period means it’ll be a bit more manageable, but still big. That glassy wind is a massive positive, making it one of the cleanest windows in the whole 16 days. It’s a score for the experienced crew.
The rest of the time is mostly a write-off with strong onshore winds and choppy, lumpy conditions. There’s a long gap from the 24th with no good recommendations, so after the 23rd, it’s a waiting game.
If you’re not an expert, the 21st and 23rd are too big. The 13th is your best bet for a manageable, if a little bumpy, surf. For the big stuff, it’s a kite-surfing dream.
Rusty, signing off.
Short Range ForecastSome drizzle, heaviest during Fri morning. Warm (max 31°C on Wed morning, min 18°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 18°C on Fri night). Winds increasing (light winds from the NE on Fri night, strong winds from the NE by Mon afternoon). | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | SSE 10 | E 9 | SSE 10 | SW 14 | SSW 12 | E 9 | SSW 16 | SSW 14 | SSW 13 | SSW 12 | SSW 11 | E 6 | SSW 18 | SSW 16 | E 8 | E 9 | E 9 | E 10 | E 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 108 | 304 | 32 | 46 | 30 | 203 | 277 | 173 | 96 | 82 | 95 | 171 | 559 | 758 | 682 | 593 | 972 | 1591 | 1026 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-off | cross | cross | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross | cross-on |
High Tide | 2:31AM1.81m | 2:51PM1.97m | 3:07AM1.91m | 3:25PM2.08m | 3:40AM1.98m | 3:57PM2.13m | 4:11AM2.00m | 4:28PM2.13m | 4:39AM1.98m | 4:56PM2.08m | 5:07AM1.92m | 5:24PM1.99m | |||||||
Low Tide | 8:28PM0.54m | 8:38AM0.45m | 9:04PM0.41m | 9:11AM0.34m | 9:36PM0.32m | 9:42AM0.27m | 10:06PM0.29m | 10:11AM0.24m | 10:34PM0.30m | 10:39AM0.27m | 11:02PM0.35m | 11:07AM0.33m | 11:28PM0.43m | ||||||
 |  |  |  | | | |  |  |  | | | | | | | | |  | |
 | — | 6:16 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 5:54 | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 23 | 31 | 28 | 25 | 21 | 21 | 19 | 20 | 19 | 19 | 20 | 20 | 20 | 22 | 22 | 21 | 22 | 23 | 24 |
Feels °C | 22 | 29 | 25 | 23 | 20 | 19 | 18 | 20 | 18 | 18 | 18 | 17 | 18 | 23 | 23 | 23 | 18 | 18 | 23 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | E 9 | SSE 10 | ENE 9 | ENE 9 | E 9 | E 9 | ENE 9 | ENE 9 | SSE 7 | SSE 7 | SSE 7 | SSW 18 | SSW 16 | E 8 | SSW 14 | SSW 13 | E 10 | E 10 |
| kJ | 290 | 304 | 32 | 258 | 289 | 203 | 173 | 113 | 84 | 51 | 57 | 46 | 559 | 758 | 682 | 289 | 137 | 1591 | 1026 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSW 11 | SE 10 | SSW 12 | SSW 18 | SSW 16 | S 5 | S 6 | ENE 9 | SSW 11 | S 11 | S 10 | — | SSW 15 | — | — | SSW 13 | SSW 12 |
| kJ | 108 | 57 | 11 | 26 | 30 | 121 | 277 | 20 | 26 | 88 | 95 | 85 | 53 | — | 462 | — | — | 93 | 46 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 11 | SSE 12 | SW 14 | SSE 10 | SSE 12 | SE 11 | SSW 14 | SSW 13 | SSW 12 | SW 15 | SSW 15 | SE 7 | — | S 9 | — | — | — | WSW 4 |
| kJ | 13 | 23 | 15 | 46 | 18 | 13 | 5 | 173 | 96 | 82 | 9 | 44 | 25 | — | 15 | — | — | — | 11 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 9 | ENE 9 | ENE 8 | SSW 3 | SSW 6 | SSW 5 | SSW 5 | — | — | E 9 | E 6 | E 7 | E 8 | — | E 9 | E 9 | ENE 10 | — |
| kJ | 516 | 563 | 318 | 488 | 5 | 72 | 14 | 31 | — | — | 173 | 171 | 225 | 628 | — | 593 | 972 | 2405 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 19 | 19 | 249 | 0 | 151 | 52 | 4 | 52 | 129 | 357 | 440 | 455 | 357 | 99 | 129 | 124 | 273 | 239 | 18 |
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.
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