
Surf Forecasts:
Fish Boma surf forecast from 16 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
Right, let’s have a look at what Fish Boma’s got cooking over the next couple of weeks.
Fish Boma is a reef break, and it’s exposed to southerly swell. It takes a south-west direction best, according to the guiding wind. Wednesday morning the 16th kicks things off with a solid 8ft south-west swell, but it’s messy—cross-on wind and rain. The combined energy is pumping hard at 2424, so there’s plenty of power, but the quality is marginal. Not the cleanest start.
Thursday the 17th sees the swell easing a touch to 7ft from the south-west, but that cross-shore wind picks up to 15 mph, making for a lumpy cross-chop. This one’s for the locals who don’t mind a wrestle, not for a fun session.
Friday the 18th drops further to 6ft, and the wind stays fresh and cross-shore at 19 mph, chewing up the surface. The energy is dropping too: 1236. It’s messy.
Saturday the 19th is still cross-shore and 5ft, but the wind backs off to 12 mph. The afternoon swings to a 7ft east-south-east swell, but the period is short at 8 seconds and it’s cross-on. Not a standout.
Now, Sunday the 20th: this is where the light comes in. The morning has 7ft south-west swell at 14 seconds, cross-off wind from the east at 9 mph, and the combined energy is a beefy 2043. The report says “clean.” That’s the one to aim for—proper groundswell with clean conditions. This is your best bet in the first week.
Monday the 21st flattens out to 4ft and it’s light cross-shore. Energy drops to 826. Nothing special.
Tuesday the 22nd: a tiny 5ft easterly swell with a short period of 8 seconds, but the morning goes glassy—wind is nil. It’s a relaxed morning for a longboard if you’re desperate, but don’t expect power.
From Wednesday the 23rd through Saturday the 26th, it’s a rough stretch. Strong cross-on winds, onshore, and the swell is mostly small or messy. The 24th throws an 12ft south-south-east swell with 19 mph cross-off wind, but the period is short at 9 seconds, and the combined energy is 1926. It’s clean wind-wise but raw and big—over 8ft, so experts only. Not a recommendation for most.
Then we hit the end of the window. Monday the 28th has 12ft to 13ft easterly swell, cross-shore wind, and energy hitting 3147. It’s big and chunky.
But the real standout is Tuesday the 29th of September. Morning: 13ft easterly swell at 10 seconds, clean offshore wind from the north-east at 6 mph, with combined energy screaming at 5406. That’s exceptional, but it’s big—expert territory. The afternoon drops to 10ft but stays clean with a cross-off breeze. If you’re skilled, that Tuesday morning is the best of the entire 16-day outlook.
Crowds can sometimes be around at Fish Boma, so keep an eye out, especially on the good days. Water temp is around average for this time of year.
Overall, the first week has a clean Sunday the 20th as a solid mid-sized option, and the second week has a big, clean Tuesday the 29th for the experts. There’s a gap of poor quality from the 23rd to the 26th. Not much for the beginners—anything over 5ft here gets solid and the big days are over 8ft.
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.










