
Surf Forecasts:
Fish Boma surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 8AM (local time) - 7ft (2.1m), 15s period, SSW swell with offshore winds.
- Most powerful swell: Sunday 6 Sep, 5PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,183 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 5AM (local time) - 6ft (1.9m), 7s 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 Saturday (Sep 05) at 5AM. The primary swell is predicted to be 1.9m and 7s period with a secondary swell of 0.9m and 8s. Another secondary swell of 0.6m 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 3.0m 17s and forecast to arrive on Sunday (Sep 06) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Saturday (Sep 05) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sat 5th Sep) | 6ft (1.9m) 7s |
| Best Surf | 8AM (Mon 7th Sep) | 7ft (2.1m) 15s |
| Most Powerful | 5PM (Sun 6th Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Alright, let’s talk about what’s cooking. The only break in the game is Fish Boma, a reef that’s fairly consistent and open to the south. The water’s about 61°F, which is a touch cooler than normal for September – about a degree and a half off, so you’ll want a spring suit.
The first few days are a bit of a bust. Friday the 4th has a 8ft swell from the SE, but a strong cross-shore wind has it all messed up. The energy is moderate (1769), but it’s ugly. Saturday morning, the 5th, cleans up with a 5ft SSW swell and a cross-offshore breeze – clean lines, with an 11-second period. The energy drops to 704, so it’s not heavy, but it’s fun. Afternoon gets chopped again, so get in early.
Sunday the 6th is where it gets real. Morning has a 8ft SSW groundswell with a 19-second period – that’s a long-period groundswell, and the energy is 5008. The wind is clean, but with that long period, sets will be spaced out. It’s a reef, so it should hold. The afternoon hits 10ft with a 17-second period and 5961 energy – big, clean, and powerful. Experts only.
Monday morning the 7th is the standout of the first week. Glassy, 7ft of SSW swell at 14 seconds, and 2940 energy. The surface is like a mirror. This is a beautiful session for experienced surfers. Crowds are “sometimes,” so you might have a few out, but it’s worth it.
Tuesday the 8th is mellow – 5ft from the E, but glassy in the morning, so you’ll get some fun waves. The energy is lower at 891. Then we hit a dry spell from Wednesday the 9th through Friday the 11th – small, onshore slop, under 3ft. A gap of about three days.
Saturday the 12th gets good again. The afternoon is the pick: 8ft SSW at 15 seconds, 3803 energy, and a clean cross-offshore breeze. This is excellent for the experienced crew.
Sunday the 13th and Monday the 14th are a write-off – strong onshore winds, lumpy. Another two-day gap.
Tuesday the 15th delivers a solid morning: 8ft SSW at 13 seconds, 2819 energy, clean cross-offshore. Wednesday the 16th offers a different direction – 7ft from the ESE at 9 seconds, with a light cross-offshore breeze. The period is short, so it’s weaker, but the energy is still moderate (1234).
Now, the real standout is Thursday the 17th. The morning is glassy, with an 8ft WSW swell at 14 seconds and a massive 5221 energy. This is exceptional, world-class potential for experts. The surface is a sheet of glass. The afternoon gets messy, but that morning is gold.
Friday the 18th follows with a huge 13ft S swell in the morning, 13-second period, 8261 energy – very strong, but onshore wind. The afternoon is glassy again with an 12ft S swell at 13 seconds and 6889 energy. Another exceptional session for the hardcore. Saturday the 19th is a total washout with onshore wind and rain.
The real standouts are Monday the 7th morning, Saturday the 12th afternoon, and especially Thursday the 17th morning and Friday the 18th afternoon. If you’re experienced, those are the sessions.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun morning, min 12°C on Fri night). Winds decreasing (fresh winds from the E on Sun afternoon, light winds from the ENE by Sun night). | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Tue morning, min 15°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | SE 9 | ESE 8 | ESE 8 | SSW 11 | SSW 10 | SSW 22 | SSW 19 | SSW 17 | SSW 16 | SSW 14 | SSW 14 | ESE 9 | E 9 | SW 12 | E 9 | SW 14 | SW 13 | SW 12 | SW 16 | SW 14 | SW 14 |
Wave Graph | |||||||||||||||||||||
971 | 635 | 522 | 467 | 370 | 893 | 4455 | 5183 | 2682 | 1647 | 1280 | 540 | 380 | 314 | 171 | 160 | 290 | 178 | 1707 | 1956 | 2247 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | glassy | glassy | cross | cross-off | cross-on | cross-on | cross | on | on | cross |
High Tide | 8:36PM1.27m | 9:53AM1.10m | 10:59PM1.21m | 12:15PM1.21m | 00:43AM1.33m | 1:22PM1.41m | 1:40AM1.49m | 2:07PM1.61m | 2:23AM1.63m | 2:45PM1.78m | 3:00AM1.73m | 3:19PM1.90m | 3:34AM1.79m | ||||||||
Low Tide | 1:58PM0.59m | 3:22AM0.65m | 4:09PM0.71m | 5:49AM0.61m | 6:29PM0.60m | 7:09AM0.45m | 7:36PM0.42m | 7:57AM0.28m | 8:22PM0.24m | 8:34AM0.13m | 9:00PM0.11m | 9:08AM0.03m | 9:34PM0.02m | ||||||||
6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | |
— | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 14 | 16 | 17 | 15 | 18 | 18 | 16 | 23 | 24 | 22 | 27 | 26 | 23 | 22 | 23 | 17 | 17 | 17 | 15 |
Feels °C | 10 | 10 | 9 | 12 | 13 | 12 | 14 | 12 | 12 | 23 | 23 | 22 | 27 | 25 | 22 | 22 | 22 | 16 | 15 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | S 9 | SSW 8 | SSW 11 | SSW 10 | SSW 10 | SSW 19 | SSW 17 | SSW 16 | SSW 14 | SSW 14 | ESE 9 | E 9 | E 9 | E 9 | E 10 | SW 13 | SW 12 | SW 16 | SW 14 | SW 14 |
639 | 328 | 82 | 467 | 370 | 325 | 4455 | 5183 | 2682 | 1647 | 1280 | 540 | 380 | 293 | 171 | 117 | 290 | 178 | 1707 | 1956 | 2247 | |
Swell 2 Height (m) Direction Period (s) | SW 11 | SW 10 | SW 10 | WSW 11 | WSW 10 | SSW 22 | SSW 10 | — | — | ESE 8 | ESE 8 | S 12 | SW 12 | SW 12 | SW 11 | SW 11 | E 10 | E 10 | E 11 | E 11 | E 10 |
128 | 129 | 85 | 23 | 43 | 893 | 164 | — | — | 497 | 434 | 480 | 367 | 314 | 99 | 114 | 120 | 90 | 82 | 79 | 53 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | SSW 14 | S 13 | — | S 13 | SW 10 | S 12 | — | — | SSE 13 | SSE 12 | SW 13 | SSE 10 | SSE 10 | SSE 9 | SW 14 | SSE 10 | SSE 9 | SSE 12 | SSE 11 | SSE 12 |
31 | 41 | 87 | — | 14 | 25 | 26 | — | — | 35 | 49 | 495 | 144 | 102 | 47 | 160 | 36 | 16 | 14 | 13 | 14 | |
Wind waves Height (m) Direction Period (s) | SE 9 | ESE 8 | ESE 8 | ESE 7 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | E 7 | E 8 | — | — | — | — | — | W 3 | WSW 4 | SW 4 | — | — | — |
971 | 635 | 522 | 214 | 184 | 309 | 363 | 778 | 585 | 761 | — | — | — | — | — | 7 | 19 | 8 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1656 | 473 | 16 | 16 | 412 | 16 | 16 | 377 | 16 | 0 | 16 | 0 | 0 | 3 | 0 | 3 | 3 | 1 | 40 | 16 | 3 |
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.










