Surf Forecasts:
Fish Boma surf forecast from 25 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 2PM (local time) - 7.5ft (2.3m), 14s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 26 Aug, 5PM (local time) - 7.5ft (2.3m), 16s period, SSW swell with 2,615 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 2PM (local time) - 7.5ft (2.3m), 14s 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 Tuesday (Aug 25) at 2PM. The primary swell is predicted to be 2.3m and 14s period with a secondary swell of 1.2m and 16s. 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 2.3m 16s and forecast to arrive on Wednesday (Aug 26) 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 1.7m 6s period and expected on Wednesday (Aug 26) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Tue 25th Aug) | 7.5ft (2.3m) 14s |
| Best Surf | 2PM (Tue 25th Aug) | 7.5ft (2.3m) 14s |
| Most Powerful | 5PM (Wed 26th Aug) | 7.5ft (2.3m) 16s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Righto, let’s get into it. Fish Boma is the only game in town for the next 16 days, and it’s a reef break that’s pretty exposed to the south. Water temp is sitting at 60°, which is a bit colder than normal for this time of year – about 3° cooler, so you’ll want the thick rubber.
The pattern kicks off with a bit of a mixed bag, but there is a standout window coming later. We’ve got sizeable swell from the 25th, but the wind is messy. Tuesday morning the 25th has a 8ft SW swell (14-second period) with a light onshore breeze, not ideal. The combined energy is strong at 2533, but the conditions are average. Afternoon sees a cross-shore wind, still not great.
Wednesday the 26th is a write-off – 15-22 mph cross-offshore winds are just too strong for a clean session, even with 6-8ft S/SSW swell and long 16-second periods. The energy is there, but the wind will ruin it.
Now, Thursday morning the 27th – that’s where it gets interesting. Glassy conditions, dead calm wind (0 mph), with a 7ft SSW swell at 12 seconds. The combined energy is moderate at 1551, but that glassy surface is the real prize. The water will be clean, the lines will be smooth. This is your best early call, for experienced surfers.
Friday the 28th afternoon looks decent too – glassy again, with a 4ft S swell at 11 seconds. Light air, clean surf. Energy is moderate (799). Good for a longer board session.
We hit a dry patch from Saturday the 29th through to Tuesday the 1st of September – small, weak, onshore winds, poor quality. The swell drops and the wind turns ugly. There’s about 4 days of slim pickings here.
Then things get serious. Wednesday morning the 2nd of September brings a massive 13ft SW swell at a 15-second period – very long period groundswell. Combined energy is pumping hard at 7388. But the wind is cross-onshore, 6 mph, so it won’t be perfect. Still, for experts only – that’s a big, powerful wave.
Friday the 4th of September is too big – we’re talking 23ft SE swell – and cross-onshore winds. That’s a washing machine for paddle surfing, but kite surfers would have a field day.
The real standout, the one to circle on the calendar, is Saturday the 5th of September. Morning has a 15ft SE swell at 11 seconds, with clean cross-offshore winds from the east at 9 mph. Combined energy is at 4990. This is a solid, powerful groundswell hitting the reef, with clean conditions. It’s big, so experienced only, but the quality will be high.
Monday the 7th of September afternoon is another cracker – 13ft ESE swell with clean cross-offshore winds, 9 mph. Excellent conditions for experienced surfers.
Tuesday the 8th of September morning – glassy, 10ft ESE swell at 11 seconds, light air. Again, expert territory, but glassy surf on a decent-sized swell is pure magic.
After that, the swell drops off and the wind picks up, so the run ends around the 9th.
If I had to pick the absolute best bet for the whole outlook, it’s Thursday morning the 27th of August for that rare, glassy 7ft swell, and Saturday morning the 5th of September for the big, clean groundswell. Both are for experienced surfers. The crowds at Fish Boma can show up sometimes, so keep that in mind.
Overall, the first week is frustrating, but the second week has some serious firepower if you’re brave enough.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Thu afternoon, min 12°C on Tue morning). Winds decreasing (fresh winds from the E on Wed afternoon, calm by Thu morning). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sun morning. Warm (max 26°C on Fri morning, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 14 | SW 14 | SW 14 | S 16 | SSW 16 | SSW 12 | SSW 12 | S 12 | S 12 | S 11 | S 11 | S 11 | SSE 11 | SSE 12 | SW 14 | SW 8 | SW 8 | SW 10 | SW 11 | SW 10 | SW 11 |
Wave Graph | |||||||||||||||||||||
1837 | 2509 | 1922 | 1533 | 2615 | 1310 | 1090 | 628 | 773 | 467 | 394 | 396 | 268 | 220 | 1105 | 558 | 333 | 759 | 659 | 562 | 457 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross-off | cross-off | cross-off | off | glassy | cross | off | cross-on | glassy | glassy | cross-on | cross | cross | cross-on | on | glassy | cross | cross | glassy |
High Tide | 2:39PM1.49m | 2:44AM1.55m | 3:06PM1.63m | 3:12AM1.65m | 3:32PM1.75m | 3:40AM1.72m | 3:59PM1.84m | 4:08AM1.76m | 4:26PM1.89m | 4:37AM1.76m | 4:54PM1.90m | 5:06AM1.72m | 5:24PM1.85m | ||||||||
Low Tide | 8:30AM0.35m | 8:44PM0.38m | 8:56AM0.23m | 9:11PM0.26m | 9:21AM0.12m | 9:39PM0.16m | 9:46AM0.05m | 10:07PM0.09m | 10:13AM0.01m | 10:35PM0.06m | 10:40AM0.01m | 11:05PM0.06m | 11:09AM0.05m | 11:36PM0.12m | |||||||
6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | |
— | 6:04 | — | — | 6:05 | — | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 1 | — | — | — | — |
Temp °C | 13 | 16 | 14 | 18 | 20 | 16 | 25 | 27 | 21 | 26 | 25 | 18 | 20 | 19 | 16 | 15 | 15 | 14 | 16 | 18 | 14 |
Feels °C | 12 | 15 | 13 | 14 | 15 | 12 | 25 | 26 | 21 | 24 | 24 | 18 | 19 | 17 | 14 | 12 | 13 | 13 | 15 | 16 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | S 16 | SSW 16 | SSW 12 | SSW 12 | ESE 9 | S 12 | S 11 | S 11 | S 11 | SSE 11 | SSE 12 | E 11 | WSW 13 | SW 8 | SW 10 | SW 11 | SW 10 | SW 11 |
1837 | 2509 | 1922 | 1533 | 2615 | 1310 | 1090 | 358 | 773 | 467 | 394 | 396 | 268 | 220 | 92 | 304 | 333 | 759 | 659 | 562 | 457 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | — | SSW 16 | SW 13 | SW 13 | ESE 8 | ESE 8 | S 12 | ESE 9 | E 10 | E 10 | ESE 9 | SW 13 | WSW 13 | SSE 11 | E 12 | WSW 13 | E 11 | E 11 | E 11 | E 4 |
696 | — | 359 | 649 | 85 | 397 | 380 | 628 | 248 | 226 | 192 | 113 | 164 | 215 | 91 | 66 | 286 | 21 | 20 | 20 | 9 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SSW 12 | — | — | WSW 12 | SSW 12 | SW 17 | S 15 | SSE 14 | SW 14 | E 11 | E 11 | SSE 11 | SSE 10 | E 11 | SSE 10 | SE 9 | — | E 10 |
— | — | — | 397 | — | — | 81 | 390 | 11 | 109 | 213 | 197 | 119 | 116 | 91 | 35 | 61 | 9 | 3 | — | 19 | |
Wind waves Height (m) Direction Period (s) | — | — | — | ESE 6 | ESE 7 | E 8 | — | — | — | — | — | — | WSW 3 | WSW 4 | SW 14 | SW 8 | — | — | — | — | — |
— | — | — | 167 | 719 | 728 | — | — | — | — | — | — | 1 | 13 | 1105 | 558 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 16 | 0 | 16 | 354 | 0 | 0 | 3 | 0 | 3 | 0 | 0 | 3 | 3 | 1 | 4 | 3 | 0 | 3 | 3 | 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.











