
Surf Forecasts:
Fish Boma surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 8AM (local time) - 7ft (2.1m), 14s period, SSW swell with offshore winds.
- Most powerful swell: Sunday 6 Sep, 5PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,509 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 5AM (local time) - 6ft (1.8m), 7s period with ESE swell.
Best Forecast Surf Conditions for Fish Boma this week:
The surf forecast for Fish Boma over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 05) at 5AM. The primary swell is predicted to be 1.8m and 7s period with a secondary swell of 1.0m and 9s. Another secondary swell of 0.6m and 13s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Fish Boma in the next 16 days are 3.0m 17s and forecast to arrive on Sunday (Sep 06) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Sunday (Sep 06) at 8AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sat 5th Sep) | 6ft (1.8m) 7s |
| Best Surf | 8AM (Mon 7th Sep) | 7ft (2.1m) 14s |
| Most Powerful | 5PM (Sun 6th Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s coming up.
The first decent call isn’t until Saturday morning, the 5th of September, so we’ve got a bit of a wait. Fish Boma is a reef break that’s fairly consistent and exposed to the south swell. The water’s sitting at 61°, which is a bit colder than normal for this time of year – nothing crazy, but you’ll feel it.
Okay, Saturday morning the 5th brings a clean 5ft swell from the SSW with a solid 11-second period, and a moderate cross-off breeze from the east. The energy’s moderate (698). It’s not huge, but it’s clean and rideable. The afternoon gets a bit lumpy, so make the most of the morning.
Now, Sunday the 6th is where it gets interesting. Morning sees 8ft of SSW groundswell, a very long 19-second period, and a clean cross-off wind. The wave energy is very strong (4932). That’s a lot of water moving. This is a long-period groundswell, so it’ll be well-shaped but might close out a bit on a beach break – at a reef like Fish Boma, it could be epic. It’s getting into that expert territory though, over 8ft. The afternoon is even bigger at 10ft, still clean, but that’s getting serious.
The standout window is Monday morning, the 7th of September. Glassy conditions, 7ft of clean SSW swell at 14 seconds, and a very strong energy reading (2767). The wind is dead calm – glass – and the forecast says “excellent surf conditions for experienced surfers.” That’s the one to circle. It’s big, it’s powerful, and it’ll be clean. Crowds are possible here sometimes, so get there early.
Tuesday the 8th is smaller but still clean in the morning – 5ft from the east with a shorter period, glassy again, and good conditions. A nice lighter option if Sunday-Monday was too much.
After that, things get a bit messy. Wednesday the 9th through Friday the 11th are small, onshore, and not worth paddling out for. There’s a glimmer on Saturday the 12th with a 8ft SSW swell in the morning, clean, and a very strong energy of 3597, but the afternoon jumps to 8ft with a 17-second period and a massive 7015 energy reading. That’s a huge amount of power. The best score in the whole run. It’s a standout call for the second week.
The rest of the second week sees a lot of onshore wind and messy conditions. The 18th of September (Friday) has an 12ft SSW swell in the morning, with a clean cross-off, but that’s expert-only territory and the wind is strong at 20 km/h. The 19th of September (Saturday) drops back to 6ft but with a cross-on wind, so not great.
Bottom line: Monday the 7th is the best of the first week – glassy, powerful, and clean. Saturday the 12th afternoon is the big one in the second week, but it’s a long way off, so keep an eye on it.
Rusty
Short Range ForecastMostly dry. Warm (max 21°C on Mon morning, min 12°C on Fri night). Winds decreasing (fresh winds from the E on Sun afternoon, calm by Mon morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Tue morning, min 15°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | ESE 8 | ESE 8 | SSW 11 | SSW 10 | SSW 22 | SSW 19 | SSW 17 | SSW 16 | SSW 14 | SSW 14 | ESE 9 | E 9 | SW 12 | E 9 | SW 14 | SW 13 | SW 12 | SW 12 | SW 15 | SW 14 |
Wave Graph | ||||||||||||||||||||
635 | 514 | 467 | 370 | 893 | 4455 | 5509 | 2682 | 1647 | 1280 | 599 | 397 | 314 | 171 | 192 | 286 | 223 | 346 | 537 | 1463 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | glassy | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy |
High Tide | 8:36PM1.27m | 9:53AM1.10m | 10:59PM1.21m | 12:15PM1.21m | 00:43AM1.33m | 1:22PM1.41m | 1:40AM1.49m | 2:07PM1.61m | 2:23AM1.63m | 2:45PM1.78m | 3:00AM1.73m | 3:19PM1.90m | 3:34AM1.79m | |||||||
Low Tide | 3:22AM0.65m | 4:09PM0.71m | 5:49AM0.61m | 6:29PM0.60m | 7:09AM0.45m | 7:36PM0.42m | 7:57AM0.28m | 8:22PM0.24m | 8:34AM0.13m | 9:00PM0.11m | 9:08AM0.03m | 9:34PM0.02m | ||||||||
— | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | |
6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 14 | 16 | 17 | 15 | 18 | 18 | 15 | 21 | 24 | 23 | 27 | 27 | 23 | 23 | 21 | 17 | 17 | 17 | 15 |
Feels °C | 10 | 9 | 12 | 12 | 11 | 14 | 13 | 10 | 21 | 23 | 23 | 27 | 26 | 22 | 22 | 20 | 16 | 16 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | S 9 | SSW 9 | SSW 11 | SSW 10 | SSW 10 | SSW 19 | SSW 17 | SSW 16 | SSW 14 | SSW 14 | ESE 9 | E 9 | E 9 | E 9 | E 10 | SW 13 | SW 12 | SW 12 | SW 12 | SW 14 |
328 | 113 | 467 | 370 | 346 | 4455 | 5509 | 2682 | 1647 | 1280 | 599 | 397 | 293 | 171 | 115 | 286 | 223 | 346 | 349 | 1463 | |
Swell 2 Height (m) Direction Period (s) | SW 10 | SW 10 | WSW 11 | WSW 10 | SSW 22 | SSW 10 | — | — | ESE 8 | SSE 12 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | E 9 | E 10 | E 11 | SW 15 | E 10 |
129 | 85 | 23 | 43 | 893 | 196 | — | — | 416 | 49 | 437 | 324 | 314 | 142 | 192 | 113 | 87 | 79 | 537 | 80 | |
Swell 3 Height (m) Direction Period (s) | SSW 14 | S 13 | — | S 13 | WSW 10 | S 12 | — | — | SSE 13 | SSE 12 | SSW 12 | SSE 10 | SSE 10 | SSE 9 | SW 11 | SSE 10 | SSE 9 | SSW 16 | E 10 | SE 13 |
41 | 87 | — | 14 | 38 | 26 | — | — | 35 | 58 | 244 | 139 | 102 | 48 | 96 | 36 | 16 | 26 | 108 | 25 | |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | E 7 | E 8 | ESE 8 | — | — | — | — | — | WSW 3 | WSW 4 | SW 4 | — | — |
635 | 514 | 208 | 178 | 271 | 255 | 488 | 494 | 669 | 414 | — | — | — | — | — | 3 | 5 | 3 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 473 | 16 | 16 | 412 | 16 | 16 | 377 | 16 | 0 | 3 | 0 | 0 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 0 |
Best forecast wave conditions in Garden Route | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
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Information about the Fish Boma Surf forecast
The above surf forecast table for Fish Boma provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Fish Boma can be found by selecting the local surf guide option on the grey menu. Our Fish Boma 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 (Fish Boma) 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 Fish Boma 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.
Are you planning a holiday in Garden Route? If you are looking for accommodation near Fish Boma, camping, hotels and holiday cottages in Garden Route, consider staying in Knysna which is 10 km (6 miles) away. Other places in and around Garden Route where you can find information about places to rent, and car hire include Plettenberg Bay which is 39 km (24 miles) away, George, Mossel Bay and Oudtshoorn.










