
Surf Forecasts:
Fish Boma surf forecast from 12 Aug 2026:
- Best quality surf: Thursday 13 Aug, 2AM (local time) - 11ft (3.5m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 2PM (local time) - 6.5ft (2.0m), 18s period, SSW swell with 2,519 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 5AM (local time) - 3.5ft (1.1m), 22s period with SSW 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 (Aug 12) at 5AM. The primary swell is predicted to be 1.1m and 22s period with a secondary swell of 1.1m and 11s. Another secondary swell of 2.2m and 8s 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 2.0m 18s and forecast to arrive on Thursday (Aug 13) at 2PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Aug 15) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 12th Aug) | 3.5ft (1.1m) 22s |
| Best Surf | 2AM (Thu 13th Aug) | 11ft (3.5m) 9s |
| Most Powerful | 2PM (Thu 13th Aug) | 6.5ft (2.0m) 18s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ at Fish Boma over the next couple of weeks. It’s a consistent reef break that handles a south swell, and we’ve got a decent run of clean waves if you pick your moments.
The overall pattern kicks off with a solid, long-period SSW groundswell that hangs around for a few days. It’s a proper deep-sea pulse with a period hitting 20 seconds at the start, which is a very long period. That means the waves will have heaps of energy and shape, but at a reef like this, it’ll lull between sets and then jack up nicely. The water temp is about average for the time of year, nothing weird going on there.
We start on Wednesday the 12th. The swell’s pumping at 5ft with a 20-second period from the SSW, but the wind is a cross-off from the east at 12 mph. It’s clean, but there’s a note about questionable tide conditions. The combined swell energy is a beefy 2539, so there’s plenty of push. Thursday the 13th is the real standout. Morning sets are 5ft from the SSW, 19-second period, and the wind switches to a light offshore from the NE at 12 mph. That’s the sweet spot – clean, offshore lines with moderate energy (3280). It’s in the intermediate to expert zone at that size. The afternoon drops to 6ft from the SW, still clean with a gentle cross-off breeze.
Friday the 14th keeps the goods rolling. Morning is 5ft from the SW, 16-second period, and a light offshore from the NNE at 6 mph. Clean and glassy by the afternoon with only 4ft and a 15-second period, the wind goes glassy from the ENE at 3 mph. That afternoon session is a dream – smooth, peeling lines, and you’ll have the place to yourself for the most part. Crowds are just “sometimes” here, but with quality like that, you might see a few.
From Saturday the 15th through to Tuesday the 18th, the swell fades and the wind turns onshore or cross-onshore, making things choppy and average. The combined energy drops to around 500-700, so it’s weak and messy. Not worth paddling out unless you’re desperate for a splash.
Wednesday the 19th shows a pulse of new swell, 5-6ft from the SW, but the period drops to 11 seconds and the wind is messy until the afternoon, when it goes glassy from the south. That afternoon window is clean again, but the swell is a bit short-period and the energy is only around 771. Thursday the 20th has a clean cross-off wind but the swell is small and the breeze gets strong in the afternoon (19 mph), so mornings might be worth a look.
Now, here’s the big one. You gotta mark Sunday the 23rd on your calendar. The swell jumps to a solid 10ft from the SSW, with an 11-second period. That’s big – expert territory only at this reef. The wind goes glassy in the morning with zero wind, and glassy again in the afternoon from the SSE at 3 mph. The combined energy is roaring at 2664 in the morning. It’s gonna be a powerful, clean, heavy day. If you’ve got the skills, this is the best session of the entire outlook.
After that, Monday the 24th and Tuesday the 25th are smaller and cleaner again, with 4-6ft and light winds. Tuesday the 25th morning is glassy with a 13-second S swell at 4ft, a nice little come-down from the big Sunday.
The very end of the run on Wednesday the 26th has a tiny, short-period 4ft from the WSW at only 6 seconds – weak and choppy. And Thursday the 27th is a write-off with messy, onshore wind and a tiny 2ft swell.
So, for the standout, no question: Thursday morning, the 13th for that offshore, consistent, long-period groundswell, and Sunday morning, the 23rd for the big, glassy, expert-only bomb sets. Don’t sleep on that Friday the 14th afternoon glass-off either.
Stay salty,
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 13°C on Tue night). Winds decreasing (fresh winds from the E on Wed afternoon, calm by Fri afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Fri night, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | SSW 23 | SSW 20 | SSW 18 | E 9 | SSW 19 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 15 | SW 13 | SW 13 | SW 14 |
Wave Graph | |||||||||||||||||||
744 | 1748 | 1877 | 1797 | 1694 | 2238 | 1225 | 954 | 696 | 598 | 471 | 465 | 376 | 352 | 373 | 424 | 976 | 828 | 1034 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | off | glassy | cross | cross-on | cross | off | cross-on | cross-on | glassy | cross | cross | cross |
High Tide | 3:16AM1.75m | 3:41PM1.84m | 3:55AM1.80m | 4:18PM1.92m | 4:31AM1.80m | 4:52PM1.93m | 5:05AM1.75m | 5:26PM1.88m | 5:37AM1.66m | 5:57PM1.78m | 6:08AM1.54m | 6:27PM1.64m | |||||||
Low Tide | 9:12PM0.15m | 9:30AM0.03m | 9:53PM0.06m | 10:05AM-0.03m | 10:31PM0.03m | 10:39AM-0.04m | 11:06PM0.05m | 11:10AM0.01m | 11:38PM0.12m | 11:40AM0.10m | 00:10AM0.22m | 12:09PM0.23m | 00:40AM0.35m | ||||||
— | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | |
5:54 | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 17 | 19 | 15 | 21 | 25 | 24 | 24 | 28 | 24 | 17 | 18 | 23 | 18 | 18 | 15 | 18 | 21 | 18 |
Feels °C | 9 | 13 | 13 | 10 | 17 | 21 | 20 | 21 | 25 | 20 | 16 | 17 | 20 | 17 | 16 | 14 | 16 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 20 | SSW 18 | ESE 9 | SSW 19 | SW 17 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | SW 14 | SW 13 | SW 13 | SW 14 | SW 15 | SW 13 | SW 13 | SW 14 |
379 | 1748 | 1877 | 1076 | 1694 | 2238 | 662 | 422 | 304 | 220 | 215 | 465 | 376 | 352 | 373 | 424 | 976 | 828 | 1034 | |
Swell 2 Height (m) Direction Period (s) | SSW 23 | SSW 11 | SW 11 | SSW 17 | SW 16 | S 9 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 4 | E 8 | E 10 | E 10 | E 9 | E 11 | SW 16 | E 11 |
744 | 211 | 172 | 1796 | 886 | 7 | 1225 | 954 | 696 | 598 | 471 | 5 | 92 | 148 | 122 | 160 | 191 | 421 | 110 | |
Swell 3 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | SW 10 | S 10 | S 11 | — | — | — | — | SW 4 | S 12 | ESE 5 | S 10 | — | SW 5 | — | E 11 | E 5 |
17 | 31 | 30 | 38 | 8 | 2 | — | — | — | — | 11 | 3 | 36 | 2 | — | 18 | — | 146 | 16 | |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | E 9 | ESE 9 | ESE 8 | E 9 | — | — | WSW 4 | — | E 9 | — | WSW 4 | WSW 4 | — | — | E 3 | — |
727 | 549 | 1210 | 1797 | 692 | 547 | 909 | — | — | 11 | — | 181 | — | 11 | 16 | — | — | 5 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 16 | 16 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 16 | 3 | 0 | 3 | 3 | 0 | 3 | 3 | 1 |
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.











