Surf Forecasts:
Fish Boma surf forecast from 13 Sep 2026:
- Best quality surf: Sunday 13 Sep, 11PM (local time) - 13ft (4.0m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 11PM (local time) - 13ft (4.0m), 10s period, E swell with 3,144 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 8PM (local time) - 11ft (3.5m), 10s period with ESE 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 Sunday (Sep 13) at 8PM. The primary swell is predicted to be 3.5m and 10s period with a secondary swell of 1.6m and 14s. 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 4.0m 10s and forecast to arrive on Sunday (Sep 13) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Friday (Sep 18) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 13th Sep) | 11ft (3.5m) 10s |
| Best Surf | 11PM (Sun 13th Sep) | 13ft (4.0m) 10s |
| Most Powerful | 11PM (Sun 13th Sep) | 13ft (4.0m) 10s |
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 on the table for Fish Boma.
First up, the water's running a bit cooler than usual for this time of year, about 60°, so you might want a slightly thicker wettie.
We've got a decent run of surf starting this Sunday, September 13th, but it's not all smooth sailing. The standout window opens on Sunday morning with a solid 7ft SSW groundswell, a 15-second period, and cross-off winds from the east. That’s going to produce some real clean lines with serious power – combined swell energy is pumping at 2761 (strong to very strong). This one is for the experienced crew only, as it’s a bit hefty and the reef at Fish Boma can be unforgiving. The crowds might show up though, so get in early.
Sunday afternoon sees the swell jump to 10ft, but it's a shorter-period ESE swell (9 seconds) and the wind picks up, making it a bit more of a handful and only marginal.
Monday and Tuesday are a bit of a write-off with onshore winds and messy conditions, though Tuesday morning does offer a brief moment of glass with a 5ft E swell. The real next highlight is a solid window from Saturday, September 19th, into Sunday, September 20th. Saturday afternoon brings a 10ft ESE swell with clean cross-off winds – a big, clean wall for the taking. Then Sunday morning, September 20th, is a beauty: glassy conditions, 8ft ESE swell at 9 seconds, and moderate wave energy (2396). It's clean, it's punchy, and it's a great morning session.
After that, the second week gets a bit inconsistent. There's a brief glassy window on Monday, September 28th, with an 8ft SW swell and excellent conditions, but you're looking at a long wait. Most of the days between September 21st and 27th are dominated by onshore winds, cross-chop, or just poor quality surf. There are a few moments, like Saturday afternoon the 26th with a 10ft WSW swell, but the wind and conditions aren't cooperating for a top-shelf paddle session. Honestly, that setup on the 26th looks more like it's built for the kite crew than for a traditional surf.
All in all, lock in Sunday morning the 13th and Sunday the 20th as your best bets. The long-range window on the 28th is promising, but it's a way off, so don't bank on it yet.
- Rusty
Short Range ForecastModerate rain (total 17mm), heaviest on Tue night. Warm (max 21°C on Tue afternoon, min 14°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 21mm), heaviest during Wed afternoon. Very mild (max 17°C on Fri afternoon, min 13°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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) | SSW 15 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | E 11 | E 11 | E 11 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 13 | SW 12 | SW 12 | ESE 8 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1714 | 1624 | 1961 | 1156 | 980 | 846 | 617 | 418 | 853 | 2318 | 2125 | 1053 | 897 | 800 | 628 | 563 | 1102 | 799 | 636 | 1076 | 1060 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-on | cross-on | off | glassy | cross-off | on | on | on | glassy | cross | cross | cross-off | cross | cross | cross-off | cross | cross-off | off |
High Tide | 4:50PM1.88m | 5:04AM1.68m | 5:18PM1.77m | 5:32AM1.58m | 5:45PM1.63m | 5:58AM1.45m | 6:11PM1.47m | 6:25AM1.31m | 6:38PM1.31m | 6:56AM1.16m | 7:13PM1.15m | 8:00AM1.01m | 9:23PM1.02m | ||||||||
Low Tide | 10:38AM0.04m | 11:02PM0.08m | 11:05AM0.12m | 11:29PM0.18m | 11:31AM0.24m | 11:54PM0.31m | 11:57AM0.38m | 00:21AM0.45m | 12:24PM0.53m | 00:52AM0.59m | 12:56PM0.68m | 1:44AM0.74m | 2:09PM0.83m | ||||||||
 |  |  | | |  |  |  |  |  | | | |  |  | | |  | | | | |
 | 6:31 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — |
 | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — |
mm | 4 | — | — | 1 | 3 | 5 | — | — | 4 | 10 | 9 | 1 | — | 1 | — | — | — | — | — | — | — |
Temp °C | 18 | 20 | 20 | 20 | 17 | 16 | 20 | 21 | 18 | 14 | 14 | 13 | 15 | 16 | 14 | 16 | 17 | 15 | 17 | 20 | 17 |
Feels °C | 17 | 19 | 20 | 19 | 17 | 17 | 19 | 20 | 17 | 12 | 11 | 11 | 12 | 13 | 12 | 12 | 12 | 11 | 14 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SW 14 | ESE 10 | ESE 10 | ESE 10 | E 11 | E 11 | E 11 | SW 10 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 13 | SW 12 | SW 12 | SW 11 | ESE 9 |
| kJ | 1714 | 1303 | 1961 | 1156 | 980 | 846 | 617 | 418 | 784 | 2318 | 2125 | 1053 | 897 | 800 | 628 | 563 | 1102 | 799 | 634 | 309 | 1060 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 16 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | SSW 15 | — | SSW 18 | SSW 16 | SW 14 | SW 13 |
| kJ | — | — | 792 | 418 | 373 | 224 | 194 | 194 | 853 | 143 | 100 | 75 | 52 | 53 | 48 | 272 | — | 31 | 171 | 453 | 663 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 6 | SSW 16 | SSW 18 | E 11 | — | — | — | E 10 | SE 8 | — | E 10 | — | — | — | — | — |
| kJ | — | — | — | — | — | 68 | 50 | 204 | 231 | — | — | — | 52 | 18 | — | 72 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 9 | — | — | SSW 4 | — | — | — | — | S 10 | — | S 7 | SE 7 | SE 7 | ESE 7 | ESE 5 | ESE 6 | ESE 7 | E 7 | ESE 8 | — |
| kJ | 1047 | 1624 | — | — | 22 | — | — | — | — | 2 | — | 320 | 183 | 99 | 107 | 126 | 329 | 432 | 636 | 1076 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 16 | 0 | 3 | 3 | 0 | 0 | 0 | 3 | 3 | 40 | 0 | 3 | 3 | 0 | 412 | 16 | 0 | 3 | 16 | 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.
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