
Surf Forecasts:
Fish Boma surf forecast from 8 Sep 2026:
- Best quality surf: Thursday 10 Sep, 8PM (local time) - 6.5ft (2.0m), 14s period, SW swell with glassy winds.
- Most powerful swell: Saturday 12 Sep, 11PM (local time) - 7ft (2.2m), 16s period, SW swell with 2,379 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 8AM (local time) - 5ft (1.5m), 9s period with E 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 Tuesday (Sep 08) at 8AM. The primary swell is predicted to be 1.5m and 9s period with a secondary swell of 0.9m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Fish Boma in the next 16 days are 2.2m 16s and forecast to arrive on Saturday (Sep 12) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Saturday (Sep 12) at 5AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 8th Sep) | 5ft (1.5m) 9s |
| Best Surf | 8PM (Thu 10th Sep) | 6.5ft (2.0m) 14s |
| Most Powerful | 11PM (Sat 12th Sep) | 7ft (2.2m) 16s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s have a look at what we’ve got.
Alright, listen up. Fish Boma is the only game in town for this whole run, and honestly, it’s got some proper magic lined up, but you’ve got to pick your moments. This is a reef setup, fairly consistent, so it’ll keep sending waves through the period. The water is sitting at a chilly 59°, which is a solid 4° colder than normal for this time of year – way below average, so you’ll want a thick suit.
The real standout, and I mean the set of the whole outlook, hits on Tuesday the 15th of September afternoon. The wind goes glassy, dead calm, and the swell comes in at 6 ft from the SSW with a period of 25 seconds. That’s a very long-period groundswell with exceptional energy (3990). For an exposed reef like this, that’s the kind of pulse that lines up perfectly, offering super clean, powerful lines. This one is honestly only for experienced surfers – that period and size will jack up fast on the reef. The other absolute belter is on Wednesday the 16th of September, starting in the afternoon: 12 ft of SW swell with a 17-second period, glassy offshore wind from the ENE, energies are huge (6135), and it's clean. That’s expert territory, pure and simple – massive, well-shaped waves.
The early part of the run starts modest. Tuesday morning the 8th is a bit small at 4 ft from the east, but the window is glassy and clean; a nice warm-up. The best morning for a hopeful surfer is Wednesday the 9th – 2 ft from the southwest with 14-second period, clean cross-offshore breeze from the NW. Tiny but tidy.
From the 10th through the 12th, it’s a mixed bag with onshore winds and lumpy conditions, though there’s plenty of swell around. The afternoon of the 11th (Friday) sees clean cross-offshore wind and 6 ft of SW swell, worth a look if you can time the tide. The morning of the 13th (Sunday) serves up 7 ft from the southwest with 14 seconds, but the cross-shore breeze keeps it from being perfect.
After that 15th and 16th peak, things get wild and messy. The 17th of September afternoon has 13 ft from the SSE but a fresh 19 mph cross-shore wind (3920 energy) – that’s a choppy mess, maybe more for kites. The 18th and 19th see big lumpy surf with strong cross-onshore winds; conditions deteriorate. The 20th Sunday morning has 8 ft from ESE but the wind is cross-onshore and moderate, labeled poor.
It picks up again on the morning of Monday the 21st – 6 ft from the SW with 14 seconds and light cross-shore wind, which gets a solid nod despite the forecast saying marginal. The last decent call is on Tuesday the 22nd morning with 6 ft and 12-second period from the southwest, light cross-shore breeze, but the afternoon gets blown out by 19 mph winds.
For me, the clear winners are Tuesday afternoon the 15th (glassy, 6 ft, 25-second period) and Wednesday afternoon the 16th (12 ft, clean, offshore). Don’t sleep on that Wednesday morning the 9th for a tiny, clean reef session. Everything else is a case of pick the clean window.
-Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Wed morning, min 16°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat afternoon. Warm (max 21°C on Sun afternoon, min 16°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | E 9 | SW 12 | E 9 | SW 14 | SW 13 | SW 13 | SW 16 | SW 15 | SW 13 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 |
Wave Graph | |||||||||||||||||||||
269 | 314 | 165 | 198 | 290 | 282 | 1057 | 1784 | 1162 | 838 | 895 | 593 | 825 | 1554 | 2291 | 1761 | 1273 | 690 | 459 | 319 | 273 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | glassy | cross-off | cross-on | cross | on | on | glassy | on | cross-off | cross | cross-on | cross-on | cross-off | cross | cross | cross-off | cross | cross-on | cross |
High Tide | 2:07PM1.61m | 2:23AM1.63m | 2:45PM1.78m | 3:00AM1.73m | 3:19PM1.90m | 3:34AM1.79m | 3:51PM1.96m | 4:06AM1.79m | 4:21PM1.95m | 4:36AM1.75m | 4:50PM1.88m | 5:04AM1.68m | 5:18PM1.77m | ||||||||
Low Tide | 8:22PM0.24m | 8:34AM0.13m | 9:00PM0.11m | 9:08AM0.03m | 9:34PM0.02m | 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 | ||||||||
6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:28 | — | — | |
— | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:17 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | 2 |
Temp °C | 27 | 28 | 23 | 31 | 27 | 18 | 19 | 19 | 17 | 18 | 18 | 17 | 17 | 18 | 17 | 19 | 21 | 19 | 20 | 21 | 20 |
Feels °C | 27 | 27 | 22 | 30 | 25 | 17 | 20 | 19 | 18 | 18 | 18 | 18 | 17 | 18 | 17 | 19 | 21 | 20 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | E 9 | SW 12 | E 9 | E 9 | SW 13 | SW 13 | SW 16 | SW 15 | SW 13 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 16 | SW 14 | SW 14 | SSE 8 | SSE 8 | SE 8 | ESE 8 |
269 | 314 | 165 | 85 | 290 | 282 | 1057 | 1784 | 1162 | 838 | 895 | 593 | 825 | 1554 | 2291 | 1761 | 1273 | 264 | 302 | 176 | 180 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSE 10 | SW 11 | SW 14 | E 9 | E 9 | SW 12 | E 10 | E 10 | E 11 | E 11 | SE 6 | SSW 10 | ESE 6 | S 9 | SSE 9 | SE 8 | SW 13 | SW 13 | E 9 | SW 12 |
243 | 77 | 142 | 198 | 85 | 60 | 455 | 53 | 54 | 37 | 37 | 44 | 143 | 56 | 380 | 421 | 311 | 690 | 459 | 186 | 273 | |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SW 16 | SSE 9 | SW 11 | SSE 10 | SSE 9 | E 10 | SSE 9 | SE 10 | — | E 11 | SW 15 | ESE 7 | SE 7 | E 8 | E 8 | E 8 | E 8 | E 9 | SW 12 | SSE 8 |
108 | 41 | 27 | 114 | 36 | 16 | 56 | 8 | 4 | — | 36 | 106 | 45 | 31 | 95 | 76 | 65 | 177 | 186 | 319 | 68 | |
Wind waves Height (m) Direction Period (s) | — | E 9 | — | — | — | W 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 235 | — | — | — | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 3 | 0 | 0 | 3 | 3 | 3 | 3 | 0 | 3 | 0 | 1 | 3 | 174 | 0 | 3 | 3 | 0 | 3 | 1 | 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.










