Surf Forecasts:
Fish Boma surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 5AM (local time) - 8ft (2.5m), 11s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 8AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,926 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 8PM (local time) - 4.5ft (1.4m), 11s 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 Friday (Aug 21) at 8PM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 1.2m and 11s. 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 2.5m 14s and forecast to arrive on Tuesday (Aug 25) at 8AM. 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 Wednesday (Aug 26) at 5AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Fri 21st Aug) | 4.5ft (1.4m) 11s |
| Best Surf | 5AM (Sun 23rd Aug) | 8ft (2.5m) 11s |
| Most Powerful | 8AM (Tue 25th Aug) | 8ft (2.5m) 14s |
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 on the cards for Fish Boma over the next couple of weeks.
First things first, the water's running real cold right now – we're talking 57°F which is 6°F colder than usual for this time of year. That's a serious step down, so a thicker wetsuit is a must if you're paddling out.
Alright, we've got a bit of a slow start. There's nothing really worth getting excited about on Friday the 21st or Saturday the 22nd. The swell's there, but the wind's a mess and conditions are just marginal to poor. We're looking at a couple of days of choppy, onshore junk. The combined energy is moderate to strong, reading 1256 on Friday morning, but it doesn't matter when the surface is blown out.
We get a bit of a pick-up on Sunday the 23rd. The morning sees a 8ft SW swell (period 11 seconds) with a light cross-onshore breeze. The combined energy jumps to 1540, showing there's some decent power. It's still a bit onshore though, so it's not firing. Sunday afternoon is much the same, with a 7ft SW groundswell.
The best run of the first week looks like it's shaping up for Tuesday the 25th. We've got a solid 8ft groundswell from the SW, a 14-second period, and the wind is light cross-shore. The combined energy hits a strong 2805. This is the one to circle on the calendar – good size, long-period lines, and clean enough to be fun.
Wednesday the 26th still has strong energy (2048 in the morning), with a clean 6ft swell from the SW under light offshore winds (E 12 mph). The afternoon turns a bit weird though – it jumps to 10ft but from the ESE with only a 7-second period, and the wind cranks up to 19 mph. That's gonna be bumpy and short-period, leaving it pretty average.
From Thursday the 27th through to Sunday the 31st, we're looking at a stretch of below-par conditions. Swell sizes drop back into the 5 to 7ft range, but the wind keeps swinging around onshore or cross-onshore. There's a cleanish session on Friday morning the 28th (5ft, S swell, light offshore) but it’s only rated as marginal.
The real standout – and I mean the one that has me talking – comes up on Wednesday the 2nd of September. Look at this: a 10ft SW groundswell with a massive 16-second period, combined energy of 4909, and glassy conditions. That’s the kind of session that gets the heart pumping. It's going to be a proper groundswell – plenty of power, long lines, and those clean faces. Just a heads-up, though: at 10ft, this is expert territory. It will be too big for beginners.
The afternoon of the 2nd turns onshore and choppy again. And don't even think about Thursday the 3rd – we’re looking at 16 to 20ft of messy, wind-affected swell with 16 mph cross-shore winds. That's a kite-boarding setup, not for a paddle surfer.
We finish off the run with a settling trend. Friday the 4th of September has a strong 10ft S swell and a 14-second period in the afternoon, with a clean offshore breeze, but it’s a bit of a beast. By Saturday the 5th, it drops back down to a more manageable 6ft.
So, if you're looking to get wet, your best bets are Tuesday the 25th for a solid clean session, and Wednesday the 2nd of September if you've got the experience and want something truly special. Keep an eye on that 2nd – it’s a long way out, but the signals are all green.
Rusty out.
Short Range ForecastMostly dry. Very mild (max 17°C on Fri afternoon, min 12°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Wed afternoon, min 11°C on Mon night). Winds increasing (calm on Mon night, fresh winds from the E by Wed afternoon). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 12 | SSW 12 | SSW 11 | SSW 11 | SW 12 | SW 12 | SW 11 | SW 12 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 14 | SSW 14 | SW 13 | ESE 7 | SSW 12 | SSW 11 | SSW 11 | SSW 11 |
Wave Graph | |||||||||||||||||||||
1250 | 644 | 460 | 739 | 594 | 1372 | 1302 | 1269 | 1136 | 760 | 687 | 2423 | 2805 | 2557 | 2525 | 1012 | 879 | 920 | 504 | 593 | 821 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-on | cross-on | cross | cross-on | cross-on | glassy | cross-on | on | glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross | glassy |
High Tide | 9:23AM1.00m | 10:47PM1.07m | 12:37PM1.04m | 00:51AM1.16m | 1:37PM1.19m | 1:41AM1.29m | 2:11PM1.34m | 2:15AM1.43m | 2:39PM1.49m | 2:44AM1.55m | 3:06PM1.63m | 3:12AM1.65m | 3:32PM1.75m | 3:40AM1.72m | |||||||
Low Tide | 3:17PM0.82m | 6:04AM0.77m | 6:39PM0.79m | 7:27AM0.63m | 7:40PM0.65m | 8:02AM0.49m | 8:15PM0.51m | 8:30AM0.35m | 8:44PM0.38m | 8:56AM0.23m | 9:11PM0.26m | 9:21AM0.12m | 9:39PM0.16m | ||||||||
7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | |
— | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — | — | 6:06 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 14 | 16 | 17 | 16 | 15 | 16 | 13 | 17 | 16 | 13 | 15 | 17 | 15 | 18 | 22 | 17 | 24 | 23 | 17 |
Feels °C | 14 | 14 | 13 | 12 | 12 | 15 | 15 | 14 | 12 | 16 | 14 | 13 | 13 | 15 | 14 | 14 | 17 | 13 | 22 | 21 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SSW 12 | SSW 11 | SSW 11 | SW 12 | SW 12 | SW 11 | SW 12 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 14 | SSW 14 | SW 13 | SSW 12 | ESE 8 | ESE 8 | SSW 11 | SSW 11 |
1250 | 644 | 460 | 739 | 594 | 1372 | 1302 | 1269 | 1136 | 760 | 687 | 2423 | 2805 | 2557 | 2525 | 1012 | 843 | 536 | 380 | 593 | 821 | |
Swell 2 Height (m) Direction Period (s) | E 9 | SW 11 | SW 11 | SW 11 | SW 7 | — | SW 14 | SW 13 | — | — | SSW 15 | — | — | — | SW 14 | SSW 16 | SSW 16 | SSW 12 | SSW 11 | ESE 8 | E 9 |
6 | 347 | 303 | 31 | 181 | — | 238 | 398 | — | — | 125 | — | — | — | 1161 | 427 | 416 | 797 | 504 | 252 | 162 | |
Swell 3 Height (m) Direction Period (s) | — | E 9 | ESE 5 | ESE 5 | E 8 | — | — | — | — | — | SE 10 | — | — | — | — | SSW 16 | SSW 16 | — | S 15 | S 15 | SW 17 |
— | 6 | 34 | 2 | 1 | — | — | — | — | — | 4 | — | — | — | — | 427 | 416 | — | 218 | 348 | 76 | |
Wind waves Height (m) Direction Period (s) | — | ESE 3 | E 5 | W 5 | — | — | — | — | — | — | — | — | — | — | ESE 5 | ESE 6 | ESE 7 | E 8 | — | WSW 4 | SW 5 |
— | 12 | 62 | 64 | — | — | — | — | — | — | — | — | — | — | 95 | 182 | 879 | 920 | — | 8 | 23 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 16 | 1 | 3 | 3 | 1 | 3 | 16 | 0 | 3 | 3 | 0 | 3 | 3 | 16 | 16 | 16 | 0 | 3 | 1 | 0 |
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.











