Surf Forecasts:
Fish Boma surf forecast from 11 Sep 2026:
- Best quality surf: Saturday 12 Sep, 11PM (local time) - 7ft (2.2m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 5AM (local time) - 10ft (3.0m), 15s period, SW swell with 3,539 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 8PM (local time) - 4.5ft (1.3m), 12s 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 Friday (Sep 11) at 8PM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 1.2m and 7s. 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 15s and forecast to arrive on Wednesday (Sep 16) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Sep 15) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 11th Sep) | 4.5ft (1.3m) 12s |
| Best Surf | 11PM (Sat 12th Sep) | 7ft (2.2m) 16s |
| Most Powerful | 5AM (Wed 16th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Alright, Rusty here, checking out the lineup at Fish Boma. This reef break has a nice run of action over the next couple of weeks. The water temp is about 59°F, which is a solid 4°F colder than normal for this time of year – you’re gonna want a thick wetsuit.
First real standout is Saturday morning, September 12th. We’ve got a 5ft southwest groundswell with a 14-second period, and the wind is dead glassy. The swell is perfect for intermediates, and those clean, calm conditions are going to make for a beautiful session. The combined energy is moderate at 1027.
Sunday the 13th is a big shift. Swell jumps to 13ft from the ESE, but the period drops to 10 seconds. That’s a ton of power – energy is strong at 4679 – but anything over 8ft is for experts only. The wind is a stiff cross-offshore at 22 mph, keeping the faces clean, but this is heavy water.
Monday, September 14th is another gem. Morning brings a 8ft ESE swell with glassy conditions – excellent for experienced surfers. Energy is still strong at 1604, but that light air makes it a dream. The afternoon stays glassy with a 7ft swell. A top day.
The wind gets messy on Tuesday the 15th afternoon with a 5ft east swell, but morning is clean.
Now, Wednesday morning, September 16th is a major highlight. We’ve got 8ft of southwest groundswell, a long 14-second period, and a light cross-offshore breeze. This is the kind of long-period swell that wraps perfectly into a reef like Fish Boma. Energy is very strong at 3111. Mark this one down.
The following days are a bit choppy, but then Sunday morning, September 20th serves up another glassy morning. A 5ft southwest swell with a 13-second period and moderate energy at 1057. Clean, fun surf.
Look ahead to Thursday morning, September 24th. We’ve got 10ft of easterly swell, glassy winds, and massive energy at 3622. That is a serious, heavy day – only for the brave and skilled.
Crowds can sometimes show up here, especially on those clean mornings, so paddle out early. My top picks are Wednesday, September 16th and Monday, September 14th – those are the sessions that’ll stick with you.
- Rusty
Short Range ForecastModerate rain (total 11mm), heaviest on Sat night. Warm (max 22°C on Sun night, min 15°C on Fri morning). Winds increasing (calm on Sat night, fresh winds from the E by Sun afternoon). | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Tue night. Warm (max 21°C on Mon morning, min 13°C on Wed morning). Winds decreasing (fresh winds from the SSW on Mon afternoon, calm by Wed morning). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 13 | SW 12 | SW 12 | SW 14 | SW 16 | SSW 16 | ESE 10 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 11 | SW 9 | SW 16 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SSW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1006 | 580 | 478 | 825 | 1845 | 2472 | 3103 | 2151 | 2345 | 1186 | 872 | 784 | 524 | 359 | 1194 | 2976 | 2664 | 1817 | 913 | 1568 | 2210 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | glassy | glassy | cross-on | cross-off | cross-off | cross-off | cross-off | glassy | glassy | off | glassy | cross-on | cross-on | cross-off | cross | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:51PM1.96m | 4:06AM1.79m | 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 | ||||||||
Low Tide | 9:40AM-0.02m | 10:05PM-0.01m | 10:09AM-0.01m | 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 | |||||||
 |  |  |  |  |  | | |  | | |  |  | | |  | | | | | | |
 | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — |
 | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — |
mm | — | 1 | 1 | 1 | — | 8 | — | — | — | 1 | 4 | — | — | — | 6 | 7 | 3 | 3 | — | 10 | 15 |
Temp °C | 18 | 18 | 16 | 17 | 18 | 17 | 17 | 18 | 22 | 21 | 16 | 16 | 21 | 19 | 16 | 13 | 13 | 13 | 14 | 12 | 13 |
Feels °C | 18 | 17 | 16 | 18 | 18 | 19 | 12 | 13 | 21 | 22 | 12 | 16 | 21 | 18 | 17 | 13 | 12 | 11 | 9 | 8 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 12 | SW 12 | SW 14 | SW 16 | SSW 16 | SW 15 | SW 14 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 11 | SW 9 | SW 10 | E 10 | E 10 | SW 13 | SW 12 | SW 12 | SSW 12 |
| kJ | 1006 | 580 | 478 | 825 | 1845 | 2472 | 1576 | 1187 | 1893 | 1186 | 872 | 784 | 524 | 359 | 817 | 135 | 100 | 1817 | 913 | 1568 | 2210 |
Swell 2 Height (m) Direction Period (s) | E 11 | SSW 8 | SSE 7 | SE 6 | S 7 | — | — | — | SW 13 | SW 13 | SW 12 | SW 11 | SW 7 | E 11 | SW 16 | — | — | E 10 | SSW 16 | E 10 | E 10 |
| kJ | 37 | 178 | 132 | 91 | 51 | — | — | — | 711 | 418 | 379 | 326 | 86 | 319 | 1194 | — | — | 72 | 291 | 33 | 32 |
Swell 3 Height (m) Direction Period (s) | E 11 | E 11 | E 10 | SSW 10 | SE 13 | — | — | — | — | — | SW 4 | WSW 6 | SW 11 | SW 18 | E 10 | — | — | — | SSE 6 | SSE 6 | — |
| kJ | 36 | 21 | 18 | 111 | 7 | — | — | — | — | — | 8 | 33 | 162 | 327 | 177 | — | — | — | 44 | 15 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ESE 7 | ESE 8 | ESE 10 | ESE 9 | ESE 10 | — | — | NW 3 | — | — | — | SW 14 | SW 14 | — | — | — | — |
| kJ | — | — | — | — | 123 | 973 | 3103 | 2151 | 2345 | — | — | 3 | — | — | — | 2976 | 2664 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 3 | 0 | 0 | 39 | 16 | 332 | 16 | 0 | 0 | 0 | 0 | 0 | 39 | 3 | 0 | 1 | 3 | 3 | 3 | 74 |
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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