
Surf Forecasts:
J-Bay surf forecast from 9 Sep 2026:
- Best quality surf: Friday 11 Sep, 8AM (local time) - 7ft (2.1m), 13s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 2PM (local time) - 11ft (3.5m), 15s period, SW swell with 5,158 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 2PM (local time) - 2.5ft (0.7m), 14s period with SW 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 Wednesday (Sep 09) at 2PM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 1.0m and 9s. Another secondary swell of 0.8m and 11s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at J-Bay in the next 16 days are 3.5m 15s and forecast to arrive on Wednesday (Sep 16) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Friday (Sep 11) at 5AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Wed 9th Sep) | 2.5ft (0.7m) 14s |
| Best Surf | 8AM (Fri 11th Sep) | 7ft (2.1m) 13s |
| Most Powerful | 2PM (Wed 16th Sep) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for J-Bay over the next 16 days.
The Lowdown
Alright, it’s Rusty here, and I’ve been staring at the charts for J-Bay for the next couple of weeks. Let’s just say, it’s a proper mixed bag, and you’re gonna have to pick your moments. We've got a serious run of quality lined up early, but the back half of the forecast opens up to some wild, windy chaos. And the water temp is a big story right now. It’s sitting at 55°, which is a whopping 11° colder than normal for this time of year. That’s not just a chilly morning, that’s a full-on winter wetsuit, booties, hood, the whole nine yards – this is far colder than usual, so don’t get caught out.
The first real window kicks off on Wednesday morning, the 9th. We’ve got a small but clean 2ft SW groundswell rolling in, with a light offshore NW wind. It’s not big, but it’s clean, and that’s about all you can ask for when the ocean’s been in a mood. J-Bay (South Africa) is handling it, but it’s really just a warm-up. The energy is moderate (469).
Now, Thursday the 10th is where it starts to get interesting. The swell bumps up a touch, and we’re looking at glassy conditions in the morning with a cross-offshore wind. The swell jumps to 5ft by the afternoon, with a solid energy reading of 1765, and it’s clean. It’s a step up, but still manageable for a good crew.
But Friday morning, the 11th – this is the one to circle. That’s the standout. We’ve got a clean 7ft SW swell, light winds, and the energy is pumping at 1422. The J-Bay (South Africa) reef and beach setup will be firing. It’s a proper wave, clean and with some push to it. This is the day for experienced surfers to get after it. It’s gonna be a proper session.
After that, the weekend gets a bit messy. Saturday the 12th sees onshore winds messing things up, and the clarity drops right out of the forecast. We get a bit of a lull, and it’s not really worth your time until Monday the 14th.
Monday the 14th is another big one. The swell direction swings around to the E, but it’s packing a punch at a solid 8ft with a 10-second period. And the magic words: light cross-offshore winds all day. The conditions are going to be clean and powerful. This is another standout window, and the energy is strong at 1575. This one’s for the crew who like it a little heavier.
Tuesday the 15th, the swell drops to 5ft, but it’s glassy in the morning. It’s still clean, but the energy is coming down (942). A good morning session for sure, but not as intense as the day before.
Now, here’s where I gotta give you the bad news. The second week of this forecast is a bit of a write-off for clean surfing. We’ve got a big pulse of swell coming, but it’s gonna be onshore and messy. Wednesday the 16th starts to build, but the wind swings to a cross-off. The energy jumps to a very strong 6140 with a 13ft SW swell, but the conditions are going to be challenging.
Thursday the 17th sees fresh onshore winds and poor conditions, and it only gets worse. Friday the 18th is a total mess – a near gale force E wind is gonna blow it all out. The swell is big and strong, but it’s a full-on storm surf, unpleasant and blown out. Honestly, at that point, the beach and reef at J-Bay (South Africa) looks more like a kitesurfer’s playground than a surfer’s paradise.
We get a brief reprieve on Saturday the 19th with a clean 8ft E swell and light winds, but it’s a blip in the noise. After that, it’s a solid run of poor conditions with onshore winds and messy, choppy seas right through to the end of the forecast on the 24th. The energy stays strong, but the quality is just not there.
So, to sum it up: early next week is pure gold, but treat that far out stuff with a lot of caution. The forecast can change, but right now, it looks like a two-week window with a gem right at the start and a long stretch of blown-out junkyard after that.
Rusty, signing off.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 33°C on Wed afternoon, min 16°C on Thu night). Winds increasing (calm on Wed night, fresh winds from the SW by Thu afternoon). | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Sun night. Warm (max 25°C on Sun afternoon, min 16°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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) | E 9 | SW 14 | SW 13 | SSW 17 | SW 16 | SW 14 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SSW 16 | SW 15 | SW 14 | E 9 | E 9 | E 10 | E 11 | E 11 | SW 12 | SW 17 |
Wave Graph | |||||||||||||||||||||
171 | 355 | 326 | 481 | 1284 | 1657 | 1408 | 1450 | 736 | 305 | 1382 | 2856 | 1956 | 1761 | 1137 | 1026 | 1138 | 1137 | 599 | 494 | 885 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | on | cross-on | on | on | cross-on | cross | on | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross-off |
High Tide | 2:48PM1.66m | 3:02AM1.61m | 3:22PM1.77m | 3:36AM1.66m | 3:54PM1.83m | 4:07AM1.67m | 4:24PM1.83m | 4:37AM1.64m | 4:53PM1.77m | 5:06AM1.58m | 5:20PM1.67m | 5:33AM1.48m | 5:46PM1.53m | ||||||||
Low Tide | 8:36AM0.13m | 9:01PM0.11m | 9:09AM0.03m | 9:35PM0.03m | 9:41AM-0.02m | 10:07PM-0.00m | 10:10AM-0.03m | 10:36PM0.01m | 10:39AM0.02m | 11:04PM0.07m | 11:06AM0.10m | 11:30PM0.16m | 11:33AM0.21m | 11:56PM0.27m | |||||||
6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | |
— | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 4 | 5 | 1 | 1 | 2 | — | — |
Temp °C | 31 | 33 | 26 | 21 | 20 | 18 | 19 | 17 | 17 | 20 | 21 | 19 | 22 | 25 | 22 | 19 | 22 | 17 | 17 | 20 | 17 |
Feels °C | 27 | 31 | 26 | 19 | 17 | 17 | 18 | 15 | 15 | 19 | 19 | 16 | 22 | 25 | 21 | 17 | 23 | 15 | 18 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | SW 13 | SW 13 | SW 16 | SW 14 | SW 13 | SW 12 | SW 12 | SE 7 | SW 14 | SSW 16 | SW 15 | SW 14 | E 9 | SW 13 | E 10 | E 11 | E 11 | E 11 | SW 11 |
153 | 164 | 326 | 418 | 1284 | 1657 | 1408 | 1450 | 736 | 127 | 1382 | 2856 | 1956 | 1761 | 1137 | 543 | 1138 | 1137 | 599 | 451 | 763 | |
Swell 2 Height (m) Direction Period (s) | SW 11 | SW 14 | E 9 | SSW 17 | SW 12 | E 9 | E 10 | E 10 | SE 6 | WSW 12 | SSW 19 | SE 12 | — | — | SW 14 | — | SW 12 | SW 12 | SW 12 | SW 12 | SW 17 |
145 | 355 | 136 | 481 | 393 | 64 | 56 | 49 | 113 | 280 | 295 | 6 | — | — | 976 | — | 437 | 309 | 273 | 494 | 885 | |
Swell 3 Height (m) Direction Period (s) | SW 15 | WSW 11 | SE 9 | E 10 | E 10 | — | S 5 | — | ENE 10 | SW 14 | ENE 9 | — | — | — | — | — | — | — | SW 6 | SSW 21 | E 10 |
171 | 45 | 22 | 90 | 88 | — | 14 | — | 31 | 305 | 29 | — | — | — | — | — | — | — | 70 | 175 | 247 | |
Wind waves Height (m) Direction Period (s) | — | — | — | W 5 | WSW 4 | SW 4 | — | SSE 7 | ENE 5 | E 6 | SE 7 | ESE 8 | E 8 | E 9 | — | E 9 | — | WSW 5 | — | — | — |
— | — | — | 42 | 26 | 38 | — | 51 | 32 | 41 | 204 | 487 | 935 | 1018 | — | 1026 | — | 48 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 60 | 3 | 3 | 3 | 3 | 0 | 60 | 31 | 142 | 197 | 197 | 31 | 140 | 52 | 0 | 0 | 3 | 0 | 3 | 0 |
Best forecast wave conditions in Eastern Cape (South) | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










