Surf Forecasts:
Fish Boma surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 5AM (local time) - 8ft (2.4m), 11s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 11AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,056 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 3.0m 14s and forecast to arrive on Tuesday (Aug 25) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Wednesday (Aug 26) at 11AM.
| 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 (2.4m) 11s |
| Most Powerful | 11AM (Tue 25th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Fish Boma over the next 16 days.
The Lowdown
Alright, let’s get into it. We’re looking at Fish Boma, a reef break that’s exposed to the south swell. The water temp is sitting at 58°F right now, which is about 5°F colder than you’d expect for this time of year – that’s a serious chill, so don’t even think about leaving the wetsuit at home.
The next 16 days are a mixed bag, but there’s definitely some magic to be found if you pick your windows. The first proper chance to get wet comes Friday morning, August 21st. We’ve got a 7ft SW swell rolling in with a 12-second period, and the combined energy is pumping at 1256 (moderate). The wind is light cross from the SE, so it’s a bit crinkly but workable. It’s not the cleanest, but it’s the first real option.
Saturday and Sunday are messy with cross-onshore winds and choppy conditions, so I’d skip those. Monday is clean but the swell dips a bit.
Now, the first standout – and I mean the one to circle – is Tuesday morning, August 25th. The swell jumps to 10ft from the SW, with a very long 14-second period. The combined energy is a solid 3056 (strong). It’s a light cross-onshore breeze, so there’s a little texture, but at 10ft this is for experienced surfers only. This reef is exposed, and that long-period groundswell will be wrapping in nicely, but it’s going to be powerful and take some know-how.
The real gem, the one I’m most excited about, is Thursday, August 27th. We’ve got a 6ft to 6ft S swell, with a 15-second period – that’s very long period groundswell, packing serious energy. The combined energy is 2291 to 2201 (strong). And the wind? Glassy. Absolutely glassy. Both morning and afternoon. That’s the kind of day you call in sick for. The waves will be clean, lined up, and that reef will handle the long-period swell beautifully. Crowds are likely at Fish Boma, so get there early.
The end of August and into September has some more size, like Sunday, August 30th with 13ft SW swell (combined energy 5605 – very strong), but the wind is cross-on or onshore, so it’s going to be a chunky, bumpy mess. That’s more of a kite-surfing day than a paddle session.
September 3rd and 5th have some big, clean-ish swells, but they’re further out and less certain. The 3rd has 13ft SW with a 14-second period and light cross winds – that’s got potential if the conditions tighten up. The 5th has 10ft SW with a 16-second period (very long), but it’s cross-on, so it’ll be a bit lumpy.
Overall, the best of the whole run is Thursday, August 27th. Glassy, solid, long-period groundswell, and that reef will be a thing of beauty. Don’t sleep on it.
Rusty
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 20°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 10 | SW 12 | SW 12 | SW 12 | SW 14 | SW 14 | SW 14 | S 15 | SSW 13 | ESE 7 | SSW 12 | S 12 | S 15 | S 15 |
Wave Graph | |||||||||||||||||||||
1250 | 644 | 460 | 739 | 594 | 1229 | 1172 | 623 | 1019 | 760 | 628 | 2457 | 3056 | 2499 | 1331 | 968 | 749 | 797 | 879 | 1547 | 1358 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross | on | cross-on | glassy | on | on | glassy | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross |
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 | 15 | 17 | 15 | 16 | 16 | 13 | 16 | 16 | 13 | 15 | 17 | 15 | 17 | 20 | 15 | 26 | 26 | 19 |
Feels °C | 15 | 14 | 13 | 11 | 12 | 13 | 16 | 14 | 12 | 15 | 14 | 13 | 14 | 16 | 14 | 13 | 15 | 10 | 25 | 25 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SSW 12 | SSW 11 | SSW 11 | SW 12 | SW 12 | SW 11 | SW 10 | SW 12 | SW 12 | SW 12 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SSW 12 | SSW 12 | ESE 8 | S 15 | ESE 9 |
1250 | 644 | 460 | 739 | 594 | 1229 | 1172 | 623 | 1019 | 760 | 628 | 2457 | 3056 | 2499 | 1197 | 968 | 749 | 797 | 567 | 1547 | 564 | |
Swell 2 Height (m) Direction Period (s) | E 9 | SW 11 | SW 11 | SW 11 | SW 7 | E 8 | SW 15 | SW 13 | — | SE 11 | SSW 14 | — | — | — | S 15 | SW 12 | SW 12 | S 16 | S 12 | WSW 12 | S 15 |
6 | 347 | 303 | 31 | 138 | 1 | 209 | 609 | — | 5 | 180 | — | — | — | 1331 | 341 | 192 | 176 | 879 | 94 | 1358 | |
Swell 3 Height (m) Direction Period (s) | — | E 9 | ESE 5 | ESE 5 | E 8 | — | E 8 | — | — | E 10 | SE 10 | — | — | — | — | S 16 | SSW 16 | S 16 | S 18 | — | SW 17 |
— | 6 | 26 | 5 | 1 | — | 1 | — | — | 2 | 4 | — | — | — | — | 326 | 324 | 174 | 6 | — | 45 | |
Wind waves Height (m) Direction Period (s) | — | ESE 3 | E 5 | W 5 | — | — | — | — | — | — | — | — | — | — | — | ESE 5 | ESE 7 | ESE 8 | E 8 | ESE 9 | — |
— | 9 | 62 | 64 | — | — | — | — | — | — | — | — | — | — | — | 143 | 734 | 495 | 839 | 560 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 332 | 1 | 74 | 3 | 1 | 3 | 16 | 0 | 3 | 3 | 0 | 16 | 16 | 16 | 16 | 332 | 0 | 0 | 0 | 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.











