Surf Forecasts:
Fish Boma surf forecast from 3 Sep 2026:
- Best quality surf: Monday 7 Sep, 5AM (local time) - 7ft (2.1m), 15s period, SSW swell with offshore winds.
- Most powerful swell: Sunday 6 Sep, 5PM (local time) - 10ft (3.0m), 18s period, SSW swell with 4,671 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 5AM (local time) - 6.5ft (2.0m), 8s 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 2.0m and 8s period with a secondary swell of 1.2m 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 18s 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 0.6m 4s period and expected on Wednesday (Sep 09) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sat 5th Sep) | 6.5ft (2.0m) 8s |
| Best Surf | 5AM (Mon 7th Sep) | 7ft (2.1m) 15s |
| Most Powerful | 5PM (Sun 6th Sep) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s coming at us in the water.
Overall, it’s a slow start with some real clean, punchy days further out if you’re ready for it.
Best on offer is Sunday morning, September 7th, at Fish Boma (reef). We’ve got a 6ft SSW groundswell with a 14-second period, and the wind is glassy – flat calm. That’s about as clean as it gets. The combined wave energy is strong at 2350. Water temp is 60°, which is a bit cooler than usual for this time of year (about 3° below average). This is the one to aim for. Crowds could show up "sometimes," but it’s worth it.
Next highlight is Sunday morning, September 13th – another SSW swell, now 8ft with a 13-second period, and a light cross-offshore breeze from the east at 10 mph, keeping the surface clean. Combined energy is strong at 1861. That’s solid size – over 5ft, so it’s for experienced surfers only. The reef will handle that period swell well.
There’s another promising one on Wednesday morning, September 16th. Glassy wind again, with a 7ft SSW groundswell at 14 seconds. Combined energy is 1735. That’s far out, so it’s a promising thought but not locked in.
Before those, the early days are rough. Thursday starts with 5ft SW swell but cross-onshore wind and messy conditions. Friday and Saturday through September 6th are mostly cross-shore, small, or lumpy – nothing worth paddling out for. Combined energy stays under 1000 in that stretch.
Later, around September 17th and 18th, the swell absolutely hammers in – up to 15ft from the SSW with 19–20 second periods and combined energy over 11945. But the wind is messy or onshore, making it a lumpy, dangerous mess. Only for experts, and even then, it’s not clean.
To sum it up: mark your calendar for Sunday, September 7th and Sunday, September 13th. Fish Boma is the spot when the wind dies and that SSW groundswell rolls in. The 16th is a maybe.
Rusty
Short Range ForecastHeavy rain (total 36mm), heaviest during Thu afternoon. Very mild (max 17°C on Sat afternoon, min 12°C on Fri night). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Tue morning, min 15°C on Sun morning). Winds decreasing (fresh winds from the E on Sun afternoon, calm by Mon morning). | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
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) | SW 12 | SSE 9 | SSE 9 | SE 9 | SE 8 | ESE 8 | SSW 11 | SSW 10 | ESE 7 | SSW 19 | SSW 18 | SSW 16 | SSW 14 | SSW 14 | SSW 13 | E 10 | SW 12 | SW 11 | SW 14 | SW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 811 | 1957 | 2194 | 870 | 868 | 531 | 408 | 320 | 431 | 3136 | 4671 | 2518 | 1468 | 1193 | 784 | 431 | 361 | 202 | 447 | 335 | 248 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross-off | cross-on | cross | glassy | cross-on | cross-on | cross-on |
High Tide | 7:20PM1.45m | 7:52AM1.21m | 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 | ||||||||
Low Tide | 12:56PM0.42m | 1:45AM0.51m | 1:58PM0.59m | 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 | ||||||||
 |  |  |  | |  |  |  | | | | | | | | | | | | |  | |
 | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — |
 | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | — | 6:14 | — | — | 6:15 | — |
mm | 5 | 20 | 9 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 15 | 16 | 14 | 16 | 17 | 16 | 18 | 20 | 16 | 23 | 23 | 22 | 26 | 26 | 21 | 23 | 19 | 16 |
Feels °C | 15 | 14 | 10 | 9 | 10 | 9 | 12 | 13 | 13 | 14 | 15 | 12 | 23 | 22 | 22 | 26 | 25 | 20 | 22 | 18 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SSW 10 | S 9 | SSW 9 | SSW 9 | SSW 11 | SSW 10 | SSW 10 | SSW 19 | SSW 18 | SSW 16 | ESE 9 | ESE 9 | E 10 | E 10 | E 10 | E 9 | SW 14 | SW 13 | SW 12 |
| kJ | 811 | 347 | 286 | 818 | 274 | 113 | 408 | 320 | 346 | 3136 | 4671 | 2518 | 826 | 653 | 602 | 431 | 313 | 168 | 447 | 335 | 248 |
Swell 2 Height (m) Direction Period (s) | S 10 | E 9 | SW 12 | SW 11 | WSW 11 | SW 10 | WSW 11 | WSW 10 | SSW 23 | SSW 10 | S 9 | SSE 15 | SSW 14 | SSW 14 | SSW 13 | SW 12 | SW 12 | SW 11 | E 10 | E 10 | E 9 |
| kJ | 154 | 6 | 212 | 128 | 87 | 85 | 23 | 43 | 411 | 148 | 26 | 23 | 1468 | 1193 | 784 | 416 | 361 | 202 | 117 | 117 | 85 |
Swell 3 Height (m) Direction Period (s) | SSE 7 | — | — | SE 11 | SSW 14 | S 13 | — | S 13 | WSW 10 | SW 13 | — | — | SSE 13 | SSE 12 | SSE 11 | S 11 | SSE 10 | SW 15 | SSE 9 | SSE 8 | — |
| kJ | 46 | — | — | 31 | 41 | 87 | — | 14 | 38 | 59 | — | — | 56 | 30 | 23 | 82 | 38 | 183 | 15 | 6 | — |
Wind waves Height (m) Direction Period (s) | S 8 | SSE 9 | SSE 9 | SE 9 | SE 8 | ESE 8 | ESE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | — | — | — | — | — | E 4 | — | — | WSW 3 |
| kJ | 234 | 1957 | 2194 | 870 | 868 | 531 | 286 | 271 | 431 | 360 | 821 | 807 | — | — | — | — | — | 11 | — | — | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 596 | 1627 | 1493 | 506 | 1 | 412 | 412 | 16 | 16 | 377 | 1 | 0 | 16 | 0 | 16 | 3 | 0 | 3 | 3 | 3 |
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.
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