Surf Forecasts:
Fish Boma surf forecast from 12 Sep 2026:
- Best quality surf: Sunday 13 Sep, 11PM (local time) - 11ft (3.5m), 10s period, ESE swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 2PM (local time) - 13ft (4.0m), 10s period, ESE swell with 2,947 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 8PM (local time) - 11ft (3.5m), 10s 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 Sunday (Sep 13) at 8PM. The primary swell is predicted to be 3.5m and 10s period with a secondary swell of 1.6m and 14s. Another secondary swell of 0.1m and 10s 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 4.0m 10s and forecast to arrive on Sunday (Sep 13) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 13th Sep) | 11ft (3.5m) 10s |
| Best Surf | 11PM (Sun 13th Sep) | 11ft (3.5m) 10s |
| Most Powerful | 2PM (Sun 13th Sep) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Imperial Version
G’day, Rusty here. We’ve got a proper run of swell coming in, but you’ve gotta pick your moments. The water is sitting at 60° at the moment, which is a bit colder than normal for this time of year. That’s not a dealbreaker, just something to keep in mind.
The action kicks off this Saturday afternoon, September 12th, but it’s a bit messy. We’ve got a 6ft south-west groundswell, with a super long 16-second period, but that cross-on breeze is going to put a bit of a chop on the face. Not the day to get excited.
Sunday morning, September 13th, is where it starts to get real. The swell jumps to a solid 13ft from the east-southeast, period drops to 9 seconds, and we’ve got a clean cross-off wind. This is big. Over 8ft is expert territory, so if you’re not feeling confident, give it a miss. It’s a beast.
Monday afternoon, September 14th, is a standout. The swell drops to a more manageable 7ft from the east-southeast, with a 10-second period, and the wind goes glassy. That’s the kind of session you wait for. This is a reef break, so that long-period energy will be lining up nicely.
Tuesday the 15th is also magic. Morning session with a 6ft east swell, 11-second period, and glassy conditions. Clean, punchy, and the combined energy is still solid (1008). The afternoon drops a bit to 4ft, but it’s still glassy.
After that, things get a bit average through the middle of the week. Wednesday and Thursday are looking more like rest days with cross-on winds and lumpy conditions.
But keep your eyes on Friday, September 25th. That afternoon we’re looking at an 12ft south-southwest swell, 16-second period, and a clean cross-off wind. The energy reading is massive (5730). This is another one for the experts only. It’s a long way out, so the details might change, but the potential is huge.
For the average punter, the glassy sessions on Monday the 14th and Tuesday the 15th are your best bets. Clean, consistent, and not too hectic.
That’s the outlook. Stay safe, pick your waves.
Rusty
Short Range ForecastModerate rain (total 19mm), heaviest on Sat night. Warm (max 21°C on Mon morning, min 15°C on Mon night). Winds decreasing (fresh winds from the E on Sun morning, calm by Mon afternoon). | Days 5-7 Weather SummaryHeavy rain (total 27mm), heaviest during Wed morning. Warm (max 22°C on Tue afternoon, min 12°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 16 | SSW 16 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | E 11 | E 11 | SW 10 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 14 | SW 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1694 | 2472 | 2484 | 2495 | 1751 | 1024 | 1000 | 693 | 695 | 418 | 1865 | 2785 | 2276 | 1120 | 1065 | 869 | 778 | 687 | 1587 | 1452 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | glassy | cross-off | glassy | glassy | cross-on | cross-on | cross-on | glassy | cross-off | cross | cross-off | cross | cross-off | cross-off |
High Tide | 4:21PM1.95m | 4:36AM1.75m | 4:50PM1.88m | 5:04AM1.68m | 5:18PM1.77m | 5:32AM1.58m | 5:45PM1.63m | 5:58AM1.45m | 6:11PM1.47m | 6:25AM1.31m | 6:38PM1.31m | 6:56AM1.16m | 7:13PM1.15m | |||||||
Low Tide | 10:35PM0.01m | 10:38AM0.04m | 11:02PM0.08m | 11:05AM0.12m | 11:29PM0.18m | 11:31AM0.24m | 11:54PM0.31m | 11:57AM0.38m | 00:21AM0.45m | 12:24PM0.53m | 00:52AM0.59m | 12:56PM0.68m | 1:44AM0.74m | |||||||
 |  |  | |  |  | |  |  | | |  |  | | | |  | | |  | |
 | — | — | 6:31 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — |
 | 6:16 | — | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — |
mm | — | 9 | 2 | 1 | — | — | 1 | 6 | — | — | 4 | 11 | 8 | 4 | — | — | — | — | 2 | — |
Temp °C | 18 | 17 | 18 | 19 | 20 | 21 | 17 | 16 | 21 | 22 | 16 | 14 | 13 | 13 | 17 | 17 | 15 | 15 | 14 | 15 |
Feels °C | 18 | 16 | 15 | 17 | 21 | 20 | 17 | 15 | 20 | 21 | 16 | 13 | 12 | 12 | 13 | 12 | 12 | 12 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SSW 16 | SSW 15 | SW 14 | ESE 10 | ESE 10 | ESE 10 | E 10 | E 11 | E 11 | SW 10 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 14 | SW 13 |
| kJ | 1694 | 2472 | 1714 | 1187 | 1402 | 1024 | 1000 | 693 | 695 | 418 | 1142 | 2785 | 2276 | 1120 | 1065 | 869 | 778 | 687 | 1587 | 1452 |
Swell 2 Height (m) Direction Period (s) | S 8 | — | — | — | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 16 | E 11 | E 10 | SE 6 | SSE 6 | E 10 | ESE 9 | E 9 | E 9 | E 9 |
| kJ | 177 | — | — | — | 792 | 527 | 373 | 264 | 249 | 258 | 989 | 143 | 102 | 149 | 44 | 33 | 197 | 154 | 217 | 180 |
Swell 3 Height (m) Direction Period (s) | ESE 7 | — | — | — | — | — | — | SW 7 | SW 16 | SSW 18 | E 11 | S 10 | — | E 10 | E 7 | — | — | SSW 15 | — | — |
| kJ | 131 | — | — | — | — | — | — | 91 | 64 | 283 | 231 | 2 | — | 73 | 51 | — | — | 377 | — | — |
Wind waves Height (m) Direction Period (s) | SE 8 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | — | SSW 4 | — | — | — | SW 10 | — | — | — | ESE 6 | ESE 6 | — | — | — | — |
| kJ | 477 | 1769 | 2484 | 2495 | 1751 | — | 21 | — | — | — | 1865 | — | — | — | 155 | 136 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 16 | 16 | 16 | 16 | 0 | 3 | 0 | 0 | 0 | 0 | 4 | 43 | 16 | 0 | 16 | 16 | 0 | 3 | 0 | 0 |
Best forecast wave conditions in Garden Route | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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