Surf Forecasts:
Fish Boma surf forecast from 16 Aug 2026:
- Best quality surf: Saturday 22 Aug, 11PM (local time) - 13ft (4.0m), 12s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 11AM (local time) - 13ft (4.0m), 14s period, SSW swell with 5,049 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 2AM (local time) - 5.5ft (1.7m), 15s 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 Monday (Aug 17) at 2AM. The primary swell is predicted to be 1.7m and 15s period with a secondary swell of 0.8m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Fish Boma in the next 16 days are 4.0m 14s and forecast to arrive on Sunday (Aug 23) at 11AM. 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+) | 2AM (Mon 17th Aug) | 5.5ft (1.7m) 15s |
| Best Surf | 11PM (Sat 22nd Aug) | 13ft (4.0m) 12s |
| Most Powerful | 11AM (Sun 23rd Aug) | 13ft (4.0m) 14s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's get straight into the outlook for your local spot, Fish Boma.
The next 16 days start off with some promising, solid swell but the window of truly clean conditions is narrow. Most of the period is plagued by cross-onshore winds and challenging conditions for all but the most experienced. There’s a real standout early on, and then a few possibilities later, but you gotta pick your moments.
We kick things off on Monday 17th August with the best conditions you'll see for a while. The morning is glassy calm, with a solid 6.9ft SW groundswell rolling in with a 13-second period. The wave energy is high (1788), and it's delivering clean, powerful lines for experienced surfers. The afternoon stays glassy with a 6.2ft SW swell. This is it – the standout of the whole outlook. Get in the water because Monday is as good as it gets.
Tuesday 18th and Wednesday 19th see the wind swing cross-onshore, messing up the surface with small wind ripples. The swell stays strong, up to 8.2ft on Wednesday morning (energy 1890), but the chop makes it a tough paddle and the waves aren't clean. This starts a long stretch where the wind is just never quite right.
Thursday 20th August sees a big pulse, with the swell jumping to 11.5ft from the SSW (energy hitting 3987). That's big, expert-only territory. Unfortunately, it's still cross-onshore, so expect a bumpy, challenging session even for the experienced crew.
Finally, relief on Friday 21st August. The morning turns glassy again with a 7.2ft SW swell (1353 energy). The wind is slight, the surface is clean. It's not the size of Monday, but it will be a really fun, much cleaner day. The afternoon stays glassy with a 6.9ft SW swell. Another good window.
Saturday 22nd August starts to deteriorate as the wind picks up, and by Sunday 23rd August, a huge 13.1ft SSW swell (5049 energy) arrives with a 14-second period. That’s a massive amount of energy, but the cross-onshore wind keeps it from being perfect. This is only for experts. The swell stays strong into Monday 24th August with an 8.2ft SSW swell (3436 energy), but it's still cross-onshore, so it's a lot of bumpy power.
The conditions then get more mixed. Tuesday 25th August has a tiny, weak 3.6ft S swell with a very long 22-second period. That long period will feel like barely a bump at most spots, but at a reef like this, it might produce some weird, slow lines. The energy is moderate (1655) for the period. Wind is cross-shore.
Another sizable pulse arrives on Wednesday 26th August with an 8.2ft SSW swell from a 16-second period (3826 energy). But the wind is cross-onshore and gets stronger in the afternoon, turning it into a choppy mess. Not recommended.
The final week of August and into September is mostly weak, onshore, and messy. There's a lot of junk. A couple of days late in the month have some small swell, but rain showers and strong winds (up to 19 mph) on Saturday 29th and Sunday 30th August will make conditions truly poor for surfing (energy around 1366 to 1823). That stretch looks more interesting for kite surfing than paddle surfing.
Looking way ahead, Tuesday 1st September brings a decent 8.2ft SSW groundswell from the 14-second period (2931 energy) with a clean, cross-offshore wind. That’s a promising, long-range possibility, but it's a long way out.
So, the big picture: Monday 17th and Friday 21st August are your best bets. Monday is the standout for clean power; Friday gives you another, slightly smaller, glassy session. Everything else in between is a battle with the wind.
Short Range ForecastMostly dry. Very mild (max 19°C on Mon afternoon, min 13°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Sat afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 13 | SW 13 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 13 | SSW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 12 |
Wave Graph | |||||||||||||||||||
1246 | 1613 | 1182 | 1089 | 1247 | 1697 | 2111 | 1860 | 1693 | 1500 | 3980 | 3785 | 2195 | 1346 | 1065 | 806 | 534 | 2846 | 4902 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | glassy | cross | cross-on | cross-on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross-off | glassy | glassy | cross-off | cross-on | cross-on | cross |
High Tide | 6:08AM1.54m | 6:27PM1.64m | 6:38AM1.41m | 6:58PM1.48m | 7:10AM1.26m | 7:31PM1.31m | 7:49AM1.12m | 8:20PM1.16m | 9:23AM1.00m | 10:47PM1.07m | 12:37PM1.04m | 00:51AM1.16m | |||||||
Low Tide | 00:10AM0.22m | 12:09PM0.23m | 00:40AM0.35m | 12:38PM0.38m | 1:11AM0.49m | 1:08PM0.53m | 1:49AM0.63m | 1:47PM0.68m | 2:58AM0.75m | 3:17PM0.82m | 6:04AM0.77m | 6:39PM0.79m | |||||||
— | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | |
5:58 | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 18 | 19 | 15 | 15 | 15 | 14 | 16 | 17 | 14 | 15 | 15 | 13 | 16 | 16 | 13 | 16 | 17 | 15 |
Feels °C | 13 | 17 | 17 | 14 | 14 | 14 | 13 | 14 | 15 | 12 | 13 | 13 | 12 | 15 | 15 | 13 | 14 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 13 | SW 13 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 13 | SSW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | — | SW 12 |
1246 | 1613 | 1182 | 1089 | 1247 | 1697 | 2111 | 1860 | 1693 | 1500 | 3980 | 3785 | 2195 | 1346 | 1065 | 806 | 534 | — | 3919 | |
Swell 2 Height (m) Direction Period (s) | E 8 | E 9 | E 11 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 8 | E 9 | E 9 | E 9 | E 9 | — | — |
88 | 111 | 110 | 81 | 55 | 50 | 31 | 30 | 16 | 16 | 7 | 14 | 1 | 7 | 6 | 1 | 2 | — | — | |
Swell 3 Height (m) Direction Period (s) | E 11 | E 10 | — | — | — | — | — | — | — | — | — | — | E 9 | — | E 9 | E 8 | — | — | — |
22 | 64 | — | — | — | — | — | — | — | — | — | — | 2 | — | 6 | 6 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | WSW 3 | — | — | — | — | — | — | SW 3 | WSW 6 | SW 12 | SW 12 |
— | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | 5 | 120 | 2846 | 4902 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 1 | 3 | 4 | 0 | 3 | 3 | 1 | 3 | 16 | 0 | 0 | 0 | 0 | 3 | 3 | 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.











