Surf Forecasts:
J-Bay surf forecast from 13 Aug 2026:
- Best quality surf: Friday 14 Aug, 5AM (local time) - 5ft (1.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 11AM (local time) - 8ft (2.5m), 13s period, SW swell with 2,031 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 5AM (local time) - 5ft (1.5m), 16s 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 Friday (Aug 14) at 5AM. The primary swell is predicted to be 1.5m and 16s period with a secondary swell of 2.0m and 8s. Another secondary swell of 2.3m and 9s is also forecast. 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 2.5m 13s and forecast to arrive on Wednesday (Aug 19) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Wednesday (Aug 19) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 14th Aug) | 5ft (1.5m) 16s |
| Best Surf | 5AM (Fri 14th Aug) | 5ft (1.5m) 16s |
| Most Powerful | 11AM (Wed 19th Aug) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for J-Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s in store for us at J-Bay over the next couple of weeks.
First up, the water is seriously cold right now – we’re talking 57.9°F, which is 8.1°F colder than normal for this time of year. That’s a major anomaly, so you’ll want a thick steamer and booties if you’re heading out. Don’t even think about a spring suit.
The next two weeks are pretty much all about J-Bay (South Africa). There’s no other break mentioned, so this is the only game in town. The pattern shows consistent swell but the quality varies a lot with the wind.
Thursday the 13th is a write-off. We’ve got a 3.9ft SSW swell with a 20-second period, which is a classic long-period groundswell that J-Bay can handle, but the wind is a light cross-onshore in the morning and then a moderate cross-onshore in the afternoon. Combined wave energy is at 2833, which is strong energy, but the wind just kills it. Not worth paddling out.
Friday the 14th is a bit better but still only marginal. The swell drops to 4.6ft from the SW with a 15-second period, but a gentle morning cross-offshore wind from the north cleans it up a bit. Energy is down to 1286. A score of 3 out of 10 tells you it’s not firing. Afternoon gets a light cross-shore. Just okay.
Saturday the 15th morning is the first real standout. We get a glassy morning with zero wind, a clean 3.6ft SW swell with a 14-second period. Combined energy is 643 (moderate). This is a score 3 out of 10 session, but that glassy condition makes it feel a lot better than the number suggests. For a bit of fun on a longboard or a funboard, this is your window. The afternoon goes onshore and turns to junk.
Sunday the 16th morning is another clean call with a moderate offshore wind from the northwest. Swell is 4.3ft from the WSW with a 13-second period. Energy is 721. A score of 3 out of 10. The offshore wind makes it look clean and lined up. Afternoon stays clean but cross-off. Not bad.
Now, Monday the 17th is when things start to get more interesting for experienced surfers. Morning brings a 6.6ft SW swell (14-second period) and a slight cross-offshore wind. Energy jumps to 1611 – strong. This is an “excellent” call with a score of 4. This is a solid day for intermediates and above. The swell is over 5ft, so beginners might find it a handful.
Tuesday the 18th morning is another excellent morning. Light cross-offshore wind, 5.9ft SW swell, 13-second period. Energy 1206. Score of 4. Afternoon gets a moderate cross-off breeze that still keeps things clean.
The pattern holds through the week. Thursday the 20th morning is another excellent session with a light cross-offshore wind, 6.6ft SW swell, 12-second period. Energy 1212. Score of 4.
Then we hit the true standout of the outlook: Saturday the 22nd morning. This is the one to really mark on your calendar. We have a solid 9.8ft SW swell with a long 14-second period, combined energy of 3573 – very strong. A light offshore wind from the WNW is blowing. That’s the best wind direction for J-Bay. Score of 5 out of 10. This is big, clean, powerful. Only for experienced surfers. The afternoon gets a moderate cross-offshore that will be wind-affected but still rideable.
Sunday the 23rd morning is still good – 7.2ft SW swell, light cross-offshore, energy 1677, score of 4. The following week starts to fade. Monday the 24th is a write-off with fresh onshore winds.
Then it builds again. Another standout late in the window: Friday the 28th morning. Another 9.8ft SW swell, 14-second period, light cross-offshore wind. Energy is 3457. Score of 5 out of 10. A big, powerful end to the outlook. Again, experts only.
The Best on Offer: Without a doubt, Saturday morning the 22nd of August is the pick of the crop. That 9.8ft SW groundswell with a 14-second period and a light offshore wind from the WNW? That’s J-Bay at its best. Clean, big, and powerful. Expect crowds, because J-Bay is *sometimes* crowded, and a session like this will draw a crowd. The second standout is Friday the 28th morning, which is almost identical. Between these two, the 22nd edges it for the better offshore wind direction.
If you’re a beginner, you’ll want to stick to the smaller days around Saturday the 15th. Anything over 5ft is going to be a challenge, and the 7ft+ days will be too much.
There are no major gaps with absolutely zero recommendations – almost every morning has something rideable if you’re willing to work around the conditions. The afternoons are generally weaker due to onshore or cross-shore winds.
Short Range ForecastMostly dry. Warm (max 29°C on Sun morning, min 14°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sun afternoon, min 14°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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 17 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | WSW 13 | SW 13 | SW 13 | WSW 12 | SW 14 | SW 13 | WSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 |
Wave Graph | ||||||||||||||||||||
1929 | 1225 | 930 | 831 | 746 | 465 | 532 | 465 | 501 | 632 | 285 | 1547 | 1756 | 1401 | 1200 | 1242 | 1545 | 2031 | 1789 | 1713 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | off | glassy | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | glassy | glassy | cross | off | cross-off | cross-off | off |
High Tide | 4:20PM1.79m | 4:32AM1.68m | 4:55PM1.81m | 5:06AM1.63m | 5:28PM1.77m | 5:38AM1.56m | 5:59PM1.67m | 6:09AM1.45m | 6:29PM1.54m | 6:39AM1.33m | 6:59PM1.39m | 7:09AM1.19m | 7:31PM1.24m | |||||||
Low Tide | 10:32PM0.03m | 10:40AM-0.04m | 11:06PM0.05m | 11:11AM-0.00m | 11:39PM0.11m | 11:41AM0.08m | 00:10AM0.20m | 12:11PM0.20m | 00:40AM0.32m | 12:39PM0.33m | 1:12AM0.45m | 1:09PM0.48m | 1:49AM0.58m | |||||||
— | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | |
5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 20 | 25 | 27 | 25 | 17 | 18 | 23 | 29 | 26 | 15 | 18 | 18 | 16 | 17 | 18 | 15 | 17 | 17 | 15 |
Feels °C | 20 | 16 | 22 | 23 | 22 | 17 | 17 | 19 | 23 | 23 | 14 | 16 | 16 | 15 | 17 | 17 | 14 | 16 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 17 | E 8 | E 8 | E 8 | SW 14 | SW 14 | SW 14 | WSW 13 | SW 13 | SW 13 | WSW 12 | SW 14 | SW 13 | WSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | E 9 |
1929 | 687 | 356 | 266 | 746 | 465 | 532 | 465 | 501 | 632 | 285 | 1547 | 1756 | 1401 | 1200 | 1242 | 1545 | 2031 | 1789 | 14 | |
Swell 2 Height (m) Direction Period (s) | S 9 | SW 16 | SW 15 | SW 15 | E 8 | E 8 | WSW 7 | E 5 | E 7 | E 8 | E 9 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 |
7 | 1225 | 930 | 831 | 228 | 160 | 61 | 29 | 61 | 116 | 180 | 182 | 177 | 100 | 94 | 68 | 67 | 41 | 26 | 25 | |
Swell 3 Height (m) Direction Period (s) | — | S 9 | — | — | — | WSW 8 | S 12 | E 10 | E 10 | E 11 | SW 14 | — | — | — | — | — | — | — | — | — |
— | 2 | — | — | — | 75 | 3 | 64 | 73 | 39 | 248 | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | E 8 | — | — | — | W 4 | — | E 8 | — | WNW 7 | WSW 5 | WSW 5 | — | — | — | — | — | — | WSW 4 | SW 5 | SW 12 |
699 | — | — | — | 21 | — | 132 | — | 43 | 33 | 32 | — | — | — | — | — | — | 13 | 55 | 1713 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 180 | 2 | 0 | 19 | 0 | 0 | 180 | 0 | 6 | 0 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 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.











