Surf Forecasts:
J-Bay surf forecast from 27 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 8AM (local time) - 15ft (4.5m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 8AM (local time) - 15ft (4.5m), 14s period, SW swell with 7,405 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 11PM (local time) - 6.5ft (2.0m), 9s period with E swell.
Best Forecast Surf Conditions for J-Bay this week:
The surf forecast for J-Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 11PM. The primary swell is predicted to be 2.0m and 9s period with a secondary swell of 1.3m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at J-Bay in the next 16 days are 4.5m 14s and forecast to arrive on Wednesday (Sep 02) 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 2.5m 8s period and expected on Thursday (Aug 27) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 27th Aug) | 6.5ft (2.0m) 9s |
| Best Surf | 8AM (Wed 2nd Sep) | 15ft (4.5m) 14s |
| Most Powerful | 8AM (Wed 2nd Sep) | 15ft (4.5m) 14s |
Table - best surf conditions forecast for J-Bay over the next 16 days.
The Lowdown
G'day, Rusty here, and I've got a look at the next couple of weeks for J-Bay. It's a classic tale of two halves, really. We're kicking off with a bit of a wait, but hold onto your boardies, because there's a proper monster swell brewing later on.
First up, the water is sitting at a chilly 58° – that's a whopping 8° colder than usual for this time of year, so you'll be wanting a thick wetsuit, or at least a good steamer.
The first few days are a bit of a write-off, to be honest. Thursday and Friday the 27th and 28th have some small swell, but the wind is all over the place and the conditions are just messy. You'll be better off waiting.
We get a tiny clean window on the morning of the 29th, with a 4 ft swell from the East and a cross-off wind, but it's not exactly firing. The energy is weak (744). The 30th and 31st bring a bit more size, with a 6 ft and 7 ft SW swell respectively, but it's still a cross-off wind and the ratings are just 'marginal'.
Now, the good stuff. The standout is the morning of Tuesday, the 1st of September. The forecast is for clear skies, a light cross-off wind from the SW, and a solid 7 ft SW groundswell with an 11-second period. The wave energy is strong (1178), and the conditions are described as excellent for experienced surfers. This is the one you want to circle on the calendar. It's a classic J-Bay day.
But then it gets a bit wild. On the 2nd of September, the swell jumps to 13 ft from the SW (energy 7125) with a 14-second period, but it's a cross-on wind. This is big, powerful, and tricky. For the crew on the 3rd, it's a full-on storm with 16 ft swell and 25 mph winds – that's a kite-surfing session, not a paddle-surfing one.
The 4th of September morning is the next real highlight. We've got a 12 ft SSW groundswell (energy 5806) with a clean offshore wind from the WNW. This is big, powerful, and clean. It's described as exceptional for experts, and it's a long-range call, so keep an eye on it.
After that, things settle down again with smaller, more inconsistent swells and onshore winds through the end of the first week and into the second. The 7th and 8th of September offer some clean, smaller waves, but nothing to write home about. The 11th of September looks like it kicks off again with a 10 ft and then 13 ft SW swell, but the wind is cross-on, so it could be a bit lumpy.
So, for the best of the best, lock in the morning of Tuesday, 1st September. The morning of Friday, 4th September is a big-time, expert-only, long-range promise. Stay safe out there.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat night. Warm (max 28°C on Sat morning, min 14°C on Thu morning). Winds increasing (calm on Fri night, fresh winds from the SW by Sat afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Sun morning. Very mild (max 17°C on Tue morning, min 11°C on Mon night). Winds decreasing (fresh winds from the SW on Sun morning, light winds from the NNW by Mon night). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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 12 | SSW 12 | E 9 | E 10 | S 11 | S 12 | E 10 | SW 13 | E 11 | SW 9 | SW 13 | SW 12 | SW 12 | WSW 12 | SW 11 | SW 11 | SW 12 | SW 13 | SW 14 | SW 14 | SW 14 |
Wave Graph | |||||||||||||||||||||
1430 | 1100 | 893 | 369 | 344 | 384 | 262 | 233 | 251 | 580 | 494 | 1240 | 1235 | 1082 | 794 | 1107 | 1463 | 3165 | 7125 | 5072 | 3419 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | glassy | cross-off | cross-on | glassy | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross-on | off |
High Tide | 3:36PM1.63m | 3:42AM1.60m | 4:02PM1.72m | 4:10AM1.64m | 4:29PM1.77m | 4:39AM1.64m | 4:57PM1.78m | 5:08AM1.61m | 5:26PM1.74m | 5:40AM1.54m | 5:58PM1.65m | 6:14AM1.43m | 6:35PM1.52m | ||||||||
Low Tide | 9:23AM0.11m | 9:41PM0.15m | 9:49AM0.04m | 10:09PM0.09m | 10:15AM0.00m | 10:38PM0.05m | 10:42AM-0.00m | 11:07PM0.06m | 11:11AM0.04m | 11:38PM0.10m | 11:41AM0.11m | 00:12AM0.19m | 12:15PM0.23m | 00:51AM0.32m | |||||||
6:46 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | |
— | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 27 | 25 | 23 | 24 | 24 | 28 | 19 | 17 | 16 | 16 | 15 | 16 | 16 | 13 | 17 | 17 | 14 | 16 | 17 | 16 |
Feels °C | 20 | 25 | 22 | 21 | 22 | 22 | 24 | 14 | 14 | 10 | 10 | 12 | 11 | 11 | 11 | 15 | 15 | 12 | 14 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | E 9 | E 10 | E 10 | S 12 | E 10 | E 11 | E 11 | SW 9 | SW 8 | SW 12 | E 11 | E 10 | SW 11 | SW 11 | SW 12 | SW 13 | SW 14 | SW 14 | SW 14 |
1430 | 1100 | 614 | 369 | 271 | 384 | 262 | 233 | 235 | 580 | 375 | 1240 | 83 | 77 | 794 | 1107 | 1463 | 3165 | 7125 | 5072 | 3419 | |
Swell 2 Height (m) Direction Period (s) | E 8 | WSW 12 | S 12 | S 11 | S 11 | E 10 | S 11 | SW 13 | WSW 12 | SW 13 | SW 13 | E 10 | SSE 10 | SE 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | ENE 9 |
583 | 81 | 722 | 305 | 344 | 247 | 260 | 230 | 251 | 347 | 494 | 54 | 11 | 4 | 71 | 67 | 48 | 45 | 39 | 39 | 25 | |
Swell 3 Height (m) Direction Period (s) | S 16 | WSW 12 | WSW 12 | SW 11 | SSE 14 | SW 14 | WSW 13 | SSE 11 | SSE 11 | E 11 | E 11 | SSE 10 | — | — | — | SSE 7 | SE 8 | SE 8 | — | — | — |
83 | 79 | 78 | 121 | 213 | 114 | 222 | 164 | 66 | 151 | 83 | 10 | — | — | — | 4 | 10 | 2 | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 8 | E 9 | E 9 | W 4 | — | — | — | SW 4 | SW 6 | — | — | — | SW 12 | WSW 12 | — | — | — | — | — | — | — |
947 | 537 | 893 | 10 | — | — | — | 44 | 76 | — | — | — | 1235 | 1082 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 31 | 31 | 0 | 0 | 3 | 0 | 3 | 3 | 0 | 140 | 3 | 0 | 3 | 3 | 0 | 0 | 3 | 0 | 3 | 3 | 0 |
Best forecast wave conditions in Eastern Cape (South) | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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Information about the J-Bay Surf forecast
The above surf forecast table for J-Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at J-Bay can be found by selecting the local surf guide option on the grey menu. Our J-Bay 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 (J-Bay) 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 J-Bay 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.
J-Bay is 19 km (12 miles) from the city of Kruisfontein. If you plan a holiday in Eastern Cape (South), look for hotels and other accommodation in Kruisfontein. Kruisfontein has rooms for a wide range of budgets as well as car hire and transport links.











