Surf Forecasts:
Dumps surf forecast from 19 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8AM (local time) - 11ft (3.5m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 8AM (local time) - 11ft (3.5m), 13s period, SW swell with 3,874 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 2AM (local time) - 8ft (2.5m), 12s period with SW swell.
Best Forecast Surf Conditions for Dumps this week:
The surf forecast for Dumps over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 2AM. The primary swell is predicted to be 2.5m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Dumps in the next 16 days are 3.5m 13s and forecast to arrive on Thursday (Aug 20) 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 1.6m 5s period and expected on Monday (Aug 24) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 20th Aug) | 8ft (2.5m) 12s |
| Best Surf | 8AM (Thu 20th Aug) | 11ft (3.5m) 13s |
| Most Powerful | 8AM (Thu 20th Aug) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Dumps over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what’s shaping up. This run is a bit of a mixed bag, with one real standout session that’s going to light up the sandbar for the experienced crew. The rest of the period is either too big, too small, or blown out, so you’ll need to pick your moments.
First up, the water temperature is running about average for the time of year, so nothing unusual there. The big news is early on, Thursday the 20th of August. We’ve got a solid 12 ft SW groundswell rolling in with a 13-second period, packing some serious energy (3587). That’s a lot of power for this spot, and the wind is a clean cross-off from the south at 9 mph. But honestly, this is too much juice for Dumps—it’s going to be a washing machine out there, really only for the most experienced chargers. The afternoon drops a little to 10 ft, but still massive.
The real gem of this forecast lands on Sunday the 23rd of August. The morning sees a 8 ft WSW groundswell at 13 seconds, with solid energy (1748) and light, cross-off breezes from the south. That’s a classic combo for Dumps—clean, punchy, and well-shaped. The afternoon holds similar at 7 ft, and this is the best window of the whole 16 days. If you’re an intermediate or better, don’t miss it.
Through the rest of the first week, Monday the 24th and Tuesday the 25th both offer clean, cross-off conditions with swell in the 5 ft to 7 ft range and periods around 12 to 14 seconds. It’s good, but not quite as standout as Sunday. By Wednesday the 26th, the wind goes cross-on and the quality drops off.
Into the second week, we’ve got a gap of a few days where things get marginal. Then Thursday the 27th shows a long-period 15-second swell, but it’s only 4 ft and the wind is moderate. Friday the 28th brings a nice 7 ft WSW swell at 14 seconds with clean cross-off winds in the morning—that’s a promising but less certain option. Saturday the 29th is windy with a fresh breeze from the SSE at 19 mph, so it’s choppy.
Sunday the 30th of August is a glassy morning with light winds and a 5 ft SW swell—clean but small. Monday the 31st is another massive 12 ft swell, but again, too big for most. From the 1st of September onward, the wind turns onshore with strong breezes, and the surf gets messy and lumpy. The best is behind us by then.
So, keep your eyes on Sunday the 23rd of August. That’s the one.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Fri afternoon, min 11°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Tue afternoon, min 12°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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 12 | SW 13 | SW 12 | SW 12 | SW 11 | SSW 11 | SSW 10 | SSW 13 | SW 11 | SW 10 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 15 | SW 14 | SW 14 | SW 13 |
Wave Graph | |||||||||||||||||||
2032 | 3587 | 2577 | 1422 | 882 | 485 | 411 | 469 | 515 | 735 | 1748 | 1430 | 1080 | 569 | 376 | 1661 | 1949 | 1664 | 1129 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 8:14AM1.22m | 8:42PM1.27m | 9:53AM1.16m | 10:27PM1.21m | 11:59AM1.20m | 00:10AM1.25m | 1:03PM1.31m | 1:08AM1.34m | 1:42PM1.42m | 1:47AM1.44m | 2:13PM1.53m | 2:20AM1.53m | |||||||
Low Tide | 2:05AM0.76m | 2:09PM0.83m | 3:29AM0.83m | 3:59PM0.91m | 5:24AM0.82m | 6:03PM0.88m | 6:38AM0.74m | 7:07PM0.78m | 7:23AM0.64m | 7:47PM0.67m | 7:57AM0.54m | 8:19PM0.57m | |||||||
— | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | |
6:17 | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 15 | 13 | 15 | 18 | 15 | 15 | 16 | 15 | 15 | 16 | 13 | 15 | 16 | 13 | 18 | 24 | 22 |
Feels °C | 12 | 11 | 12 | 11 | 13 | 16 | 15 | 13 | 14 | 15 | 14 | 14 | 11 | 12 | 13 | 10 | 15 | 22 | 20 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 13 | SW 12 | SW 12 | SW 11 | WSW 11 | SSW 10 | SSW 13 | SW 11 | SW 10 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 15 | SW 14 | SW 14 | SW 13 |
2032 | 3587 | 2577 | 1422 | 882 | 379 | 411 | 469 | 515 | 735 | 1748 | 1430 | 1080 | 569 | 376 | 1661 | 1949 | 1664 | 1129 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SSW 10 | WSW 11 | WSW 10 | WSW 10 | WSW 14 | — | — | — | SSW 11 | SW 11 | W 11 | — | SSW 15 | SSE 7 |
— | — | — | — | — | 316 | 291 | 198 | 77 | 569 | — | — | — | 146 | 258 | 151 | — | 144 | 73 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 14 | — | WSW 17 | SSW 12 | — | — | — | SSW 14 | SW 14 | — | — | — | — |
— | — | — | — | — | — | 81 | — | 27 | 129 | — | — | — | 127 | 301 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | SSE 4 | SSE 5 | SSW 11 | — | — | — | — | — | — | SSE 4 | SSE 4 | SSE 5 | SSE 5 | SSE 6 | SSE 6 | SE 7 |
— | — | — | 25 | 60 | 485 | — | — | — | — | — | — | 33 | 36 | 56 | 107 | 145 | 136 | 176 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 4 | 43 | 0 | 0 | 9 | 4 | 22 | 22 | 0 | 0 | 0 | 0 | 0 | 82 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Dumps Surf forecast
The above surf forecast table for Dumps provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Dumps can be found by selecting the local surf guide option on the grey menu. Our Dumps 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 (Dumps) 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 Dumps 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.
Are you planning a holiday in Cape Town? If you are looking for accommodation near Dumps, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 6 km (4 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Bellville which is 14 km (9 miles) away, Robben Island, Kayamnandi and Stellenbosch.











