Surf Forecasts:
Fish Boma surf forecast from 20 Aug 2026:
- Best quality surf: Friday 21 Aug, 2AM (local time) - 8ft (2.5m), 12s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 8AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,844 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 2AM (local time) - 8ft (2.5m), 12s 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 Friday (Aug 21) at 2AM. The primary swell is predicted to be 2.5m and 12s period with a secondary swell of 0.2m and 9s. 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 2.5m 14s and forecast to arrive on Tuesday (Aug 25) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Saturday (Aug 22) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 21st Aug) | 8ft (2.5m) 12s |
| Best Surf | 2AM (Fri 21st Aug) | 8ft (2.5m) 12s |
| 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, Rusty here. Let’s have a look at what’s cooking.
We’ve got a solid run of swell ahead, but the week starts off a bit messy. The first few days are a write-off thanks to onshore winds and choppy conditions, but don’t worry – we’ve got some real gems hiding in the extended forecast.
The standout by far is the 4th of September. Friday morning at Fish Boma (reef) is looking absolutely world-class. A massive 16ft SW groundswell, with a very long 15-second period, is pumping in. The combined energy is a monstrous 10088, which is as strong as it gets. The wind is light and offshore from the east, so the surface will be clean. This is expert territory only – a wave this size is no joke, and it’s going to be a proper session for the experienced crew. The crowds are only sometimes there, so if you’re good enough, you might score it relatively uncrowded.
Now, for a slightly more manageable but still excellent option, circle Sunday morning, 23rd August. The wind goes glassy, dead calm, with a 8ft SW swell at 11 seconds. The combined energy is 1544, which is moderate to strong. It’s not as big as the later swell, but the clean, glassy conditions will make it super fun for experienced surfers. The reef will be handling it well.
The water temperature isn’t flagged as unusual, so expect it to be about average for this time of year.
Between the 25th and 26th, there’s a pulse of 8ft SW swell with a long 14-second period, but the wind is cross-on, so it’s not the best shape. The 31st August morning brings a 8ft ESE swell with clean, cross-off winds from the east – that’s a solid option for a Monday morning session, with combined energy around 1117.
There’s a gap of poor conditions from the 30th through the 1st of September, where light rain and onshore winds ruin the party. Then the 2nd September is a total washout with strong, fresh onshore winds.
The very end of the run, 5th September Saturday morning, sees a 12ft SSW swell with light offshore winds, but the energy is a bit lower at 3406. Still a good one for the experienced surfer.
Overall, the best of the best is the 4th of September. If you’re an expert, that’s your day. For the rest of us, the 23rd August morning glass-off is the pick of the earlier surf.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sat afternoon, min 11°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Wed afternoon, min 11°C on Mon night). Winds increasing (calm on Sun night, fresh winds from the E by Wed afternoon). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 | SW 12 | SSW 12 | SSW 11 | SSW 11 | SW 12 | SW 12 | SW 11 | SW 11 | SW 12 | SW 12 | SW 12 | SW 11 | SW 14 | SW 14 | SW 13 | SW 12 | ESE 7 | ESE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 1914 | 1250 | 644 | 460 | 739 | 594 | 1302 | 1302 | 1004 | 1118 | 760 | 752 | 851 | 2687 | 2238 | 1777 | 1010 | 746 | 600 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross | cross | cross-on | cross-on | cross-on | glassy | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross-off | cross | cross-off | cross-off |
High Tide | 8:20PM1.16m | 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 | ||||||
Low Tide | 2:58AM0.75m | 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 | |||||||
 |  | | |  | |  | | | | | | | | | | | | | |
 | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — |
 | 6:00 | — | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 16 | 17 | 14 | 16 | 18 | 15 | 15 | 16 | 13 | 16 | 16 | 13 | 15 | 16 | 13 | 19 | 21 | 17 |
Feels °C | 13 | 14 | 14 | 13 | 11 | 13 | 14 | 15 | 14 | 12 | 14 | 14 | 13 | 14 | 14 | 11 | 16 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SSW 12 | SSW 11 | SSW 11 | SW 12 | SW 12 | SW 11 | SW 11 | SW 12 | SW 12 | SW 12 | SW 11 | SW 14 | SW 14 | SW 13 | SW 12 | SSW 11 | ESE 8 |
| kJ | 1914 | 1250 | 644 | 460 | 739 | 594 | 1302 | 1302 | 1004 | 1118 | 760 | 752 | 851 | 2687 | 2238 | 1777 | 1010 | 296 | 600 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | SW 11 | SW 11 | SW 11 | SW 7 | E 8 | SW 14 | SW 14 | — | — | SE 10 | SSW 14 | — | — | — | S 16 | SW 12 | SSW 11 |
| kJ | 6 | 6 | 347 | 303 | 31 | 176 | 1 | 241 | 277 | — | — | 4 | 845 | — | — | — | 129 | 301 | 394 |
Swell 3 Height (m) Direction Period (s) | — | — | E 9 | ESE 5 | ESE 5 | E 8 | — | E 8 | — | — | — | E 9 | — | — | — | — | SSW 16 | SSW 15 | WSW 12 |
| kJ | — | — | 6 | 24 | 5 | 1 | — | 1 | — | — | — | 2 | — | — | — | — | 253 | 176 | 129 |
Wind waves Height (m) Direction Period (s) | — | — | ESE 3 | E 5 | W 5 | — | — | — | — | — | — | — | — | — | — | — | ESE 6 | ESE 7 | — |
| kJ | — | — | 9 | 51 | 61 | — | — | — | — | — | — | — | — | — | — | — | 81 | 746 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 16 | 16 | 1 | 3 | 41 | 3 | 0 | 16 | 0 | 3 | 3 | 0 | 16 | 16 | 0 | 16 | 16 | 0 |
Best forecast wave conditions in Garden Route | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.
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