Surf Forecasts:
Thompsons Bay surf forecast from 12 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 11PM (local time) - 7.5ft (2.3m), 9s period, SE swell with cross-offshore winds.
- Most powerful swell: Wednesday 12 Aug, 8PM (local time) - 8ft (2.4m), 9s period, SE swell with 989 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 11PM (local time) - 7.5ft (2.3m), 9s period with SE swell.
Best Forecast Surf Conditions for Thompsons Bay this week:
The surf forecast for Thompsons Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 11PM. The primary swell is predicted to be 2.3m and 9s period with a secondary swell of 0.5m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Thompsons Bay in the next 16 days are 2.4m 9s and forecast to arrive on Wednesday (Aug 12) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Monday (Aug 17) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 12th Aug) | 7.5ft (2.3m) 9s |
| Best Surf | 11PM (Wed 12th Aug) | 7.5ft (2.3m) 9s |
| Most Powerful | 8PM (Wed 12th Aug) | 8ft (2.4m) 9s |
Table - best surf conditions forecast for Thompsons Bay over the next 16 days.
The Lowdown
Alright, I’m looking at Thompsons Bay here. The water’s sitting at 71°, which is pretty much normal for this time of year, so no wetsuit drama.
To be straight with you, the next week and a half is a bit of a grind. The swell's coming in from the southeast, but the energy is all over the place. The first few days are a write-off, with rain showers and onshore winds making a mess of things. We’re seeing a lot of "poor surf conditions" for the first week, with the swell bumping up to 8ft but with a short period and wrong wind. You’ve got to wait it out.
The first real glimmer of hope comes on Monday, the 17th of August, in the afternoon. The wind goes glassy, and we get a 5ft swell from the east with a clean 10-second period. The combined energy is moderate (498), but the glassy conditions will make it smooth. It’s not a classic, but it’s the best you’ll get for a while.
But hold on, the real standout is Monday, the 24th of August. That afternoon, we’ve got glassy conditions again, with a solid 6ft swell from the south. The period is a long 16 seconds, which is proper groundswell. The combined energy is strong (1685). This is a long-period swell, so it’s best at the point or reef, not the beach. The wind is glassy, so it’ll be super clean. This is the one to circle on the calendar. It’s a bit far out, so keep an eye on it, but it’s promising.
The rest of that second week is mostly cross-shore winds and short-period slop, so you’ll be sitting that out. The swell from the south on the 20th has some size (7ft) and a nice long period (13-14 seconds), but the winds are cross-shore and it’s rated as "marginal" at best. It’s worth a look if you’re desperate, but it’s not the one.
So, bottom line: the 17th of August afternoon is the pick of the first week, and the 24th of August afternoon is the standout for the whole run. Everything else is a bit of a battle.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed night. Very mild (max 19°C on Fri morning, min 15°C on Thu morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Tue morning, min 16°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | SE 9 | ESE 9 | ESE 8 | SE 8 | E 10 | E 10 | ESE 10 | E 10 | E 10 | E 10 | E 11 | E 11 | ENE 11 | ENE 10 | E 10 | E 10 | E 10 | E 9 | E 9 | ENE 7 |
Wave Graph | ||||||||||||||||||||
1037 | 707 | 433 | 222 | 255 | 271 | 335 | 441 | 482 | 522 | 658 | 588 | 862 | 707 | 440 | 489 | 301 | 196 | 275 | 254 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | cross-on | on | off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | glassy | cross-off | cross | cross | cross |
High Tide | 3:49PM1.88m | 4:01AM1.86m | 4:25PM1.97m | 4:35AM1.89m | 4:58PM2.00m | 5:07AM1.87m | 5:30PM1.97m | 5:38AM1.81m | 6:00PM1.88m | 6:07AM1.70m | 6:28PM1.75m | 6:35AM1.57m | 6:56PM1.59m | |||||||
Low Tide | 9:55PM0.10m | 10:08AM-0.03m | 10:31PM0.05m | 10:41AM-0.07m | 11:04PM0.05m | 11:13AM-0.05m | 11:36PM0.10m | 11:43AM0.03m | 00:06AM0.19m | 12:12PM0.14m | 00:35AM0.31m | 12:40PM0.29m | 1:04AM0.44m | |||||||
— | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | |
5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | |
mm | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 18 | 17 | 19 | 19 | 18 | 19 | 21 | 18 | 20 | 21 | 19 | 20 | 22 | 19 | 23 | 25 | 21 |
Feels °C | 13 | 15 | 15 | 16 | 17 | 16 | 14 | 16 | 17 | 17 | 17 | 17 | 17 | 16 | 17 | 20 | 21 | 20 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 9 | ESE 9 | ESE 8 | SE 8 | E 10 | E 10 | ESE 10 | E 10 | E 10 | E 10 | E 11 | E 11 | S 11 | ENE 10 | E 10 | S 10 | E 10 | E 9 | SW 15 | ENE 7 |
1037 | 707 | 433 | 222 | 255 | 271 | 335 | 441 | 482 | 522 | 658 | 588 | 10 | 707 | 440 | 2 | 301 | 196 | 9 | 197 | |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 11 | S 11 | E 8 | SSE 8 | SE 8 | SSW 16 | S 9 | S 14 | S 14 | S 13 | S 12 | SW 12 | S 10 | S 10 | S 11 | SW 15 | SW 6 | SW 6 | SW 16 |
100 | 47 | 85 | 82 | 114 | 62 | 26 | 6 | 16 | 15 | 13 | 11 | 6 | 9 | 8 | 2 | 9 | 2 | 1 | 10 | |
Swell 3 Height (m) Direction Period (s) | S 16 | SSW 14 | SSW 19 | E 10 | SSW 20 | SSW 18 | S 9 | S 15 | S 9 | S 14 | S 8 | SW 13 | SW 12 | SW 12 | S 11 | S 16 | SW 10 | S 16 | S 12 | S 10 |
19 | 64 | 36 | 100 | 129 | 104 | 6 | 5 | 2 | 15 | 1 | 7 | 6 | 5 | 2 | 5 | 4 | 5 | 3 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | ENE 4 | NNE 4 | NNE 4 | NNE 4 | NE 5 | NNE 4 | ENE 11 | NNE 5 | NNE 5 | E 10 | — | — | E 9 | ENE 7 |
— | — | — | — | — | — | 25 | 17 | 34 | 10 | 51 | 22 | 862 | 125 | 49 | 489 | — | — | 275 | 254 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 941 | 0 | 6 | 42 | 0 | 42 | 732 | 0 | 42 | 42 | 0 | 42 | 514 | 0 | 42 | 0 | 0 | 42 | 42 | 39 |
Best forecast wave conditions in KwaZulu-Natal North Coast | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
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Information about the Thompsons Bay Surf forecast
The above surf forecast table for Thompsons Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Thompsons Bay can be found by selecting the local surf guide option on the grey menu. Our Thompsons 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 (Thompsons 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 Thompsons 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.
Thompsons Bay is 3 km (2 miles) from the city of Ballitoville. If you plan a holiday in KwaZulu-Natal North Coast, look for hotels and other accommodation in Ballitoville. Ballitoville has rooms for a wide range of budgets as well as car hire and transport links.











