
Surf Forecasts:
Fish Boma surf forecast from 13 Sep 2026:
- Best quality surf: Sunday 13 Sep, 11PM (local time) - 11ft (3.5m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 8AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,824 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 2PM (local time) - 10ft (3.0m), 9s 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 2PM. The primary swell is predicted to be 1.9m and 14s period with a secondary swell of 0.1m and 11s. Another secondary swell of 3.0m and 9s 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 2.5m 14s and forecast to arrive on Wednesday (Sep 16) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Saturday (Sep 19) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sun 13th Sep) | 10ft (3.0m) 9s |
| Best Surf | 11PM (Sun 13th Sep) | 11ft (3.5m) 10s |
| Most Powerful | 8AM (Wed 16th Sep) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at what’s cookin’ at Fish Boma. This is a reef break, exposed to the south, so it grabs a whole lot of ocean energy. The water’s running at 60°, which is a bit colder than normal for this time of year, so don’t forget the booties if you’re heading out.
Right now, we’re in a bit of a lull. The first real opportunity is going to be Sunday afternoon, the 13th of September. We’ve got a solid 12ft of swell coming from the ESE, but it’s short-period stuff at 9 seconds. The wind is a cross-off from the east at 12 mph, which will keep things clean, but that period is short, so expect a bit of a bumpy, less powerful wave. The energy is strong (3026), but it’s not the best quality. This one is really for the experienced crew only, as the size is over 8ft.
The real standout window starts to build on Monday the 28th of September. Monday morning is the one to circle on your calendar. We’ve got a big 12ft groundswell from the southwest with a 13-second period. That’s a long period, meaning proper, powerful lines. And the wind? It’s glassy. Zero wind from the southwest, which is offshore here. It doesn’t get any cleaner. The energy is pumping at a massive 4524, and the forecast is calling for excellent conditions for experienced surfers. This is big, heavy reef surf, not for the faint-hearted. After lunch, the wind swings onshore from the west, so get your session in early.
Before that big Monday, there are a few other days worth watching. On the 22nd of September, Tuesday afternoon, we see a nice 7ft swell from the SSW with a very long 17-second period. That is a proper groundswell. The wind is a light cross-shore, so it’ll be a little lined up. The energy is very strong (3112). It’s a promising setup, but it’s still over a week away, so keep an eye on it.
Also on the 26th of September, Saturday afternoon, another big pulse arrives: 10ft from the SSW with a 16-second period. Again, very long period and the wind is a clean cross-off from the east at 12 mph. Energy is huge at 3932. That’s another expert-only session, but it could be epic if the winds hold.
The rest of the forecast is a mixed bag of smaller swells or bumpy conditions. There’s a few mornings with clean cross-off winds, like the 13th and 24th, but the swell sizes are moderate. It’s not a complete write-off, but the real magic is locked into that final Monday.
In short: this week is for the brave. Wait for that last Monday morning, the 28th, for the glassy, big-wave perfection. The 22nd and 26th afternoons are also strong runners, but less certain this far out.
Stay safe out there.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Mon night. Warm (max 21°C on Sun afternoon, min 13°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Wed morning. Very mild (max 17°C on Thu afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 15 | ESE 9 | 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 11 | SW 14 | SW 13 | SW 12 | SW 12 | SW 13 |
Wave Graph | |||||||||||||||||||||
1810 | 1723 | 1368 | 1040 | 889 | 632 | 617 | 418 | 1394 | 2458 | 1429 | 1053 | 944 | 800 | 628 | 726 | 1344 | 1092 | 761 | 435 | 609 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | on | on | cross-off | cross-on | cross-off | on | cross-on | on | glassy | cross | cross | off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 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 | 8:00AM1.01m | 9:23PM1.02m | ||||||||
Low Tide | 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 | 2:09PM0.83m | ||||||||
6:31 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | |
— | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | |
mm | — | — | — | — | 3 | 10 | — | — | 3 | 10 | 7 | 4 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 19 | 21 | 20 | 21 | 17 | 16 | 20 | 21 | 18 | 14 | 13 | 14 | 16 | 17 | 15 | 16 | 16 | 15 | 18 | 19 | 16 |
Feels °C | 18 | 20 | 20 | 20 | 16 | 17 | 19 | 20 | 18 | 11 | 8 | 13 | 12 | 12 | 13 | 12 | 11 | 11 | 14 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 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 11 | SW 14 | SW 13 | SW 12 | SW 12 | ESE 7 |
1810 | 1303 | 1368 | 1040 | 889 | 632 | 617 | 418 | 817 | 2458 | 1429 | 1053 | 944 | 800 | 628 | 726 | 1344 | 1092 | 761 | 435 | 232 | |
Swell 2 Height (m) Direction Period (s) | — | — | SW 13 | SW 13 | SW 12 | SW 12 | SW 10 | SW 11 | SW 16 | E 11 | E 10 | S 7 | E 10 | E 10 | ESE 8 | ESE 8 | E 10 | E 8 | SSW 16 | SW 14 | SW 13 |
— | — | 780 | 527 | 373 | 224 | 281 | 202 | 964 | 143 | 100 | 247 | 51 | 51 | 153 | 116 | 33 | 49 | 147 | 346 | 609 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | WSW 7 | SSW 16 | SSW 18 | E 11 | S 10 | — | E 10 | — | E 10 | E 10 | E 10 | — | — | ESE 8 | — | — |
— | — | — | — | — | 70 | 50 | 204 | 235 | 2 | — | 75 | — | 98 | 33 | 33 | — | — | 22 | — | — | |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 9 | — | — | SSW 4 | — | — | — | SW 10 | — | S 6 | — | SE 7 | SE 7 | — | — | ESE 8 | E 5 | ESE 5 | ESE 6 | E 7 |
1099 | 1723 | — | — | 29 | — | — | — | 1394 | — | 221 | — | 251 | 169 | — | — | 176 | 27 | 32 | 371 | 368 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 16 | 0 | 3 | 3 | 0 | 3 | 0 | 175 | 3 | 74 | 0 | 3 | 473 | 0 | 332 | 16 | 0 | 3 | 16 | 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.










