Surf Forecasts:
Thompsons Bay surf forecast from 17 Aug 2026:
- Best quality surf: Friday 21 Aug, 5AM (local time) - 6.5ft (2.0m), 16s period, S swell with cross-offshore winds.
- Most powerful swell: Friday 21 Aug, 5AM (local time) - 6.5ft (2.0m), 16s period, S swell with 2,002 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 8PM (local time) - 6.5ft (2.0m), 10s period with ENE 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 Monday (Aug 17) at 8PM. The primary swell is predicted to be 2.0m and 10s period with a secondary swell of 1.7m and 10s. Another secondary swell of 0.1m and 10s is also forecast. 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 2.0m 16s and forecast to arrive on Friday (Aug 21) at 5AM. 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 Monday (Aug 17) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 17th Aug) | 6.5ft (2.0m) 10s |
| Best Surf | 5AM (Fri 21st Aug) | 6.5ft (2.0m) 16s |
| Most Powerful | 5AM (Fri 21st Aug) | 6.5ft (2.0m) 16s |
Table - best surf conditions forecast for Thompsons Bay over the next 16 days.
The Lowdown
Alright, Rusty here, lookin' at the charts for the next couple of weeks. Honestly, it's a bit of a tough stretch for us at Thompsons Bay. The water's sittin' right around 70°F, which is pretty much normal for this time of year, so at least you won't be freezin' while you're waitin' for a wave.
The pattern for the next week is pretty grim. We've got a solid run of poor surf conditions, with the wind mostly blowin' cross or cross-on, and the swell energy is all over the place but never really lockin' in. The wave energy is moderate in the early part, with combined energy values around 536 on Monday morning, but the quality just isn't there. We're looking at a big gap with no real recommendations until we get toward the end of the month.
The standout, and I mean the only real glimmer of hope in this whole 16-day window, is looking like Saturday, August 29th. On the Saturday afternoon, we've got glassy conditions with the wind laying right down, and the swell is a tiny 2ft from the east. It's not going to be big, but that glassy wind will make it clean. The wave energy is weak, only 106, so it's not gonna be a power session, but if you're desperate for a longboard or a foamy glide, you might finally get a clean one. The break is fairly consistent and intermediate level, so perfect for gettin' a few.
Before that, there's really nothin' worth paddling out for. The wind is consistently messy or onshore, and even when we get a bit of size, like the 8ft from the SSW on Thursday the 20th, it's with a fresh cross-onshore wind, making it a lumpy, choppy mess. That's more of a kite session than a surf session, to be honest. The only other days that even get a "marginal" nod are a few mornings with a long-period S or SSW swell, but the wind is never in our favor, and the surf quality is just poor.
After that Saturday glass-off, we get a pulse of big, powerful swell rolling in. Sunday, August 30th, sees a 10ft southerly swell with a combined energy of 1830, and then Monday the 31st cranks it up to 10ft with a massive 2900 energy. That's some serious water moving around. But the wind is onshore or cross, and it's gonna be a washing machine. Only for the hardcore, experienced crew. Then on Tuesday, September 1st, the swell is still solid at 7ft from the south with a 16-second period, and the wind is light and cross-on. The energy is still huge at 2391. That's a lot of power, but it'll be breaking straight and fast, tricky for the beach break. It's a promising look for the experts, but it's a long way out and the forecast confidence is lower.
So, keep your head up. The water's fine, but the waves are stubborn. The best bet is that glassy Saturday afternoon on the 29th for a clean, small wave session. For the rest, it's a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon afternoon, min 17°C on Mon morning). Winds increasing (calm on Tue night, strong winds from the SSW by Wed night). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Fri afternoon, min 17°C on Thu night). Winds increasing (calm on Fri night, fresh winds from the SSW by Sat afternoon). | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 8 | SSW 14 | SSW 15 | SSW 8 | S 8 | S 16 | S 14 | S 13 | ENE 7 | SSW 7 | S 8 | S 8 | S 9 | S 14 | S 16 |
Wave Graph | |||||||||||||||||||||
520 | 563 | 470 | 241 | 162 | 155 | 115 | 116 | 696 | 851 | 517 | 1787 | 971 | 408 | 172 | 475 | 538 | 355 | 213 | 715 | 826 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross-on | cross-on | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-off | cross | cross | cross | cross-on | cross | cross | on | cross-on | cross-off |
High Tide | 6:28PM1.75m | 6:35AM1.57m | 6:56PM1.59m | 7:03AM1.42m | 7:24PM1.42m | 7:33AM1.26m | 8:00PM1.25m | 8:20AM1.10m | 9:26PM1.10m | 12:05PM1.03m | 00:56AM1.14m | 1:46PM1.18m | 1:54AM1.29m | ||||||||
Low Tide | 12:12PM0.14m | 00:35AM0.31m | 12:40PM0.29m | 1:04AM0.44m | 1:10PM0.46m | 1:36AM0.59m | 1:42PM0.63m | 2:22AM0.74m | 2:38PM0.79m | 4:44AM0.84m | 6:12PM0.85m | 7:29AM0.73m | 7:45PM0.71m | ||||||||
6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | |
— | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 23 | 20 | 20 | 20 | 20 | 22 | 22 | 21 | 19 | 19 | 18 | 21 | 23 | 19 | 20 | 20 | 19 | 19 | 19 | 19 |
Feels °C | 18 | 20 | 19 | 17 | 17 | 18 | 19 | 18 | 21 | 13 | 15 | 18 | 17 | 18 | 18 | 15 | 15 | 16 | 18 | 17 | 19 |
Swell 1 Height (m) Direction Period (s) | E 10 | SE 10 | E 10 | E 9 | E 9 | E 9 | E 8 | E 8 | ENE 7 | SSW 14 | SSW 14 | S 16 | S 14 | S 13 | ENE 7 | ENE 7 | SSW 14 | S 8 | S 9 | S 14 | S 16 |
520 | 4 | 470 | 241 | 162 | 155 | 115 | 89 | 132 | 105 | 63 | 1787 | 971 | 408 | 172 | 31 | 104 | 228 | 185 | 715 | 826 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SW 11 | S 16 | S 18 | SW 16 | S 5 | SSW 15 | SSW 14 | NE 7 | E 9 | E 8 | E 8 | E 8 | — | S 11 | — | ENE 7 | SSW 13 | SSW 14 | ENE 9 | ENE 9 |
10 | 5 | 5 | 6 | 11 | 22 | 84 | 116 | 84 | 37 | 22 | 21 | 21 | — | 160 | — | 11 | 65 | 213 | 16 | 25 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 16 | S 9 | — | SW 11 | SSW 16 | SE 4 | — | — | NE 7 | NE 7 | — | — | — | — | — | — | ENE 8 | ENE 9 | — | — |
6 | 10 | 2 | — | 5 | 26 | 5 | — | — | 2 | 2 | — | — | — | — | — | — | 14 | 15 | — | — | |
Wind waves Height (m) Direction Period (s) | NNE 5 | E 10 | NNE 5 | SSW 5 | S 6 | S 5 | — | ENE 5 | SSW 15 | SSW 8 | S 8 | — | NE 3 | ENE 6 | — | SSW 7 | S 8 | S 8 | — | — | — |
67 | 563 | 48 | 122 | 92 | 31 | — | 48 | 696 | 851 | 517 | — | 10 | 188 | — | 475 | 538 | 355 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 42 | 42 | 0 | 118 | 118 | 0 | 42 | 42 | 116 | 368 | 324 | 0 | 373 | 42 | 7 | 314 | 368 | 6 | 118 | 42 | 0 |
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.











