
Surf Forecasts:
Fish Boma surf forecast from 15 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 11PM (local time) - 6ft (1.9m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 8AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,985 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 11PM (local time) - 6ft (1.9m), 13s period with SW 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 Wednesday (Sep 16) at 11PM. The primary swell is predicted to be 1.9m and 13s period with a secondary swell of 1.0m and 7s. Another secondary swell of 1.3m and 7s 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.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 16th Sep) | 6ft (1.9m) 13s |
| Best Surf | 11PM (Wed 16th Sep) | 6ft (1.9m) 13s |
| 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, listen up. Conditions are a bit of a mixed bag this stretch, so let’s not waste any time and get into it.
First off, the water’s sitting at 60°F, which is a touch colder than what we usually see this time of year – about 3°F cooler. You’ll want the rubber, no question.
The opening days are a write-off, to be honest. The swell’s there, but the wind’s all over the place and the tide’s messing with the shape. It's a bit of a frustrating start, so don't bust your gut over it.
The first real window of opportunity opens up on the Saturday morning of the 19th. The wind goes dead glassy and we’ve got a 8ft swell pushing in from the E with a 9-second period. This is where it starts to get interesting, especially for the more experienced crew out there. The energy reading is solid at 2286, so there’s some push behind it. It’s not perfect, but it’s the cleanest we’ve seen in a few days.
Then, Sunday the 20th morning is the standout of this first week. Winds are glassy again, and a slightly longer-period SW swell at 7ft wraps in with a 14-second interval. This is proper groundswell energy, and the 2169 reading backs that up. It’s going to have some real power to it, so this is one for the boys and girls who know what they’re doing. That long period at a reef like Fish Boma is a good combination. It’ll be a bit more lined-up and have some push through the barrel sections.
After that, the surf dips back down a bit for a few days. The Monday the 21st and Tuesday the 22nd have some smaller waves, but the winds are mostly cross or glassy, keeping things semi-clean. Still, it's a bit of a lull.
We get a pulse for Wednesday morning the 23rd with another 10ft glassy one, but it’s short-lived as the wind swings onshore and turns it messy by the afternoon. And then it gets serious. Thursday the 24th sees a big jump with a 13ft SSW swell with a 15-second period and a huge energy reading of 6340, but the cross-onshore 30 km/h wind is going to chop it right up. That’s a full-on, gnarly, blown-out mess. This is more interesting for the kitesurfers, honestly.
Now, there’s a bit of a gap in the real quality after that. The 25th is just average. But keep your eyes on the Saturday the 26th. By the afternoon, that same big SW groundswell is still pushing 13ft at a 15-second period, and the energy is cranked at 6586. The wind is lighter, but it's still cross-onshore, so it's not going to be perfect. Still, with that size and period, it's going to be powerful and will have some serious lines at Fish Boma. This is your long-range standout, but it’s still a week out, so treat it as a promising lead, not a guarantee.
The Sunday morning the 27th still has that 10ft SW swell running and it’s clean and glassy. That looks like another good one.
The energy backs off for the final stretch of this window. Monday the 28th is pretty forgettable with a dropping swell and a bit of chop.
Then we get a slight pickup for the Tuesday the 29th, with an 8ft ESE swell at a short 9-10 second period. It’s not the same quality as that groundswell, but it’s something to surf.
Finally, Wednesday morning the 30th looks like the cleanest, most user-friendly day of the whole run. Glassy conditions, a clean 7ft E swell at a 10-second period. It’s not the biggest, but it’ll be fun and clean. A good one to finish on.
So, to call it: the best bets are the Sunday the 20th morning for the quality of that SW groundswell, and the Saturday afternoon the 26th for pure size and power.
Stay safe out there.
Rusty
Short Range ForecastHeavy rain (total 23mm), heaviest during Wed morning. Very mild (max 18°C on Tue night, min 13°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the E by Fri afternoon). | Days 5-7 Weather SummaryHeavy rain (total 26mm), heaviest during Sat night. Very mild (max 19°C on Mon afternoon, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 | SW 14 | SW 14 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 13 | SW 12 | ESE 8 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 |
Wave Graph | |||||||||||||||||||
842 | 2318 | 1639 | 1920 | 1281 | 1025 | 865 | 739 | 713 | 784 | 565 | 614 | 1547 | 1639 | 1568 | 772 | 520 | 403 | 298 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross | cross | cross | cross | cross | cross-off | cross | cross-on | cross | cross-off | cross | cross | cross | cross | cross-off |
High Tide | 5:58AM1.45m | 6:11PM1.47m | 6:25AM1.31m | 6:38PM1.31m | 6:56AM1.16m | 7:13PM1.15m | 8:00AM1.01m | 9:23PM1.02m | 12:12PM1.04m | 00:26AM1.10m | 1:08PM1.20m | 1:13AM1.25m | |||||||
Low Tide | 11:54PM0.31m | 11:57AM0.38m | 00:21AM0.45m | 12:24PM0.53m | 00:52AM0.59m | 12:56PM0.68m | 1:44AM0.74m | 2:09PM0.83m | 5:05AM0.80m | 6:23PM0.81m | 6:51AM0.66m | 7:16PM0.65m | |||||||
— | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | |
6:19 | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | |
mm | 3 | 9 | 3 | 4 | — | — | 4 | — | — | — | — | 3 | 10 | 5 | 4 | 2 | 2 | — | — |
Temp °C | 18 | 13 | 15 | 14 | 15 | 16 | 14 | 15 | 16 | 15 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 19 | 17 |
Feels °C | 17 | 10 | 12 | 11 | 9 | 10 | 10 | 10 | 11 | 11 | 13 | 15 | 13 | 17 | 16 | 18 | 17 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 10 | SW 14 | SW 14 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 13 | SW 12 | SW 12 | SW 15 | SW 14 | SW 13 | ESE 8 | ESE 8 | SW 12 | SW 12 |
486 | 2318 | 1639 | 1920 | 1281 | 1025 | 865 | 739 | 713 | 784 | 565 | 546 | 1547 | 1639 | 1266 | 385 | 306 | 403 | 298 | |
Swell 2 Height (m) Direction Period (s) | SW 15 | E 10 | E 10 | E 10 | — | E 11 | E 11 | — | — | SSW 18 | SW 16 | SW 15 | — | — | SW 13 | SW 13 | SW 12 | — | SSW 14 |
842 | 106 | 106 | 75 | — | 56 | 35 | — | — | 31 | 127 | 33 | — | — | 1568 | 772 | 520 | — | 41 | |
Swell 3 Height (m) Direction Period (s) | E 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
188 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | S 7 | — | SE 7 | SE 7 | ESE 6 | ESE 7 | ESE 7 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | — | — | ESE 8 | ESE 8 |
— | — | 113 | — | 363 | 237 | 231 | 497 | 691 | 601 | 484 | 614 | 686 | 404 | 686 | — | — | 277 | 266 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 40 | 3 | 16 | 0 | 16 | 509 | 16 | 412 | 1648 | 0 | 416 | 16 | 3 | 0 | 3 | 3 | 16 | 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.










