
Surf Forecasts:
Dumps surf forecast from 5 Sep 2026:
- Best quality surf: Saturday 5 Sep, 11PM (local time) - 4.5ft (1.3m), 22s period, SW swell with offshore winds.
- Most powerful swell: Saturday 12 Sep, 2PM (local time) - 10ft (3.0m), 17s period, SW swell with 4,480 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 11PM (local time) - 4.5ft (1.3m), 22s 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 Saturday (Sep 05) at 11PM. The primary swell is predicted to be 1.3m and 22s period with a secondary swell of 0.6m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Dumps in the next 16 days are 3.0m 17s and forecast to arrive on Saturday (Sep 12) 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 2.5m 8s period and expected on Saturday (Sep 05) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 5th Sep) | 4.5ft (1.3m) 22s |
| Best Surf | 11PM (Sat 5th Sep) | 4.5ft (1.3m) 22s |
| Most Powerful | 2PM (Sat 12th Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Dumps over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the menu for the next couple of weeks.
We’ve got a bit of a slow start, but once it kicks in, there are some serious pulses of energy heading our way. The standout is undoubtedly the Dumps, a sandbar that's inconsistent but can really fire when it all lines up. There's a massive swell window opening up, and we're going to see some real power.
The first real opportunity comes on Sunday, the 6th of September. The Dumps will see a solid 7.5ft swell from the Southwest. The period is a massive 18 seconds, which is proper groundswell energy. The combined energy of all swells is pumping at 3122, so there's a ton of power in the water. The wind is offshore from the ESE at just 6 mph, which is a dream. This is for experienced surfers only, though – that's a lot of water moving. The crowd factor is listed as "sometimes", so you might have some company, but it's not a circus.
The momentum keeps rolling into Monday the 7th. We’re still looking at 6.6ft of SW swell with a 14-second period. The absolute highlight here is the morning glass-off. The wind is from the NW at only 3 mph and described as "glass". That’s as clean as it gets. The energy is still strong at 1471. Again, this is a big, powerful wave for the experienced crew.
After that, the swell drops a bit, but we get a beautiful, clean spell on Tuesday the 8th with a 3.3ft WSW swell and glassy conditions again. The energy is down to 482, making it a much more manageable size. It’s a good day for a wider range of surfers, but the swell is a bit weaker.
The next big pulse hits on Thursday the 10th of September. The morning session is the pick, with a 8.2ft WSW swell (15-second period) and a light SSE breeze at 6 mph. The combined energy rockets up to 3371. This is another big, clean day for the confident surfer.
We get repeat performances on the 12th of September (Saturday) with a 8.2ft to 10.0ft SW swell, huge energy readings (3803 and 4117), but the wind is a stronger cross-off from the SE at 16 mph. It’s surfable but not as perfect as the earlier days.
There’s a bit of a messy patch mid-week, but the swell is still big. On the 16th of September, the swell hits 13.1ft with a 15-second period. The energy reading is a massive 7429. However, the wind is a strong cross-shore on Wednesday morning, and the forecast itself says the swell is predicted to be too big for this break. That's a "big wave specialist only" situation, and even then, it might be a close-out.
The run continues with a solid 7.2ft on the 17th, but it's blown out by 19 mph winds.
Looking further out to the 19th of September (Saturday), we see a nice return to form. The swell settles to 5.2ft from the SW with a 14-second period and a glassy morning with an ENE breeze at just 3 mph. The energy is a healthy 1032. That looks like a very fun, clean morning for the intermediate crew.
The 20th of September (Sunday) is also on the cards, with 6.2ft of SW swell and a 15-second period, but the wind is a light cross-shore, so it won't be quite as perfect as the Saturday before.
So, to wrap it up: the absolute best windows are the Sunday the 6th and Monday the 7th mornings for the big, clean, powerful groundswell. The glassy morning on the 19th of September is your best bet for a fun, slightly less intense session. The Dumps is an inconsistent spot, so you have to jump on these windows when they open.
Short Range ForecastMostly dry. Warm (max 27°C on Mon afternoon, min 14°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Tue afternoon, min 14°C on Wed night). Winds increasing (calm on Tue afternoon, fresh winds from the SSE by Fri morning). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 25 | SW 21 | SW 18 | SW 16 | SW 15 | SW 14 | SW 13 | WSW 12 | WSW 12 | WSW 12 | SW 11 | WSW 13 | WSW 13 | WSW 12 | WSW 15 | WSW 14 | SW 13 | WSW 12 | WSW 12 | SW 12 |
Wave Graph | ||||||||||||||||||||
173 | 2460 | 3122 | 1978 | 1441 | 1471 | 1247 | 447 | 294 | 140 | 172 | 304 | 346 | 808 | 3371 | 2948 | 3292 | 1073 | 782 | 549 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | off | glassy | cross-off | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 10:31PM1.33m | 11:38AM1.35m | 00:11AM1.41m | 12:50PM1.50m | 1:14AM1.53m | 1:40PM1.65m | 2:01AM1.64m | 2:21PM1.78m | 2:41AM1.72m | 2:58PM1.86m | 3:17AM1.77m | 3:33PM1.89m | 3:51AM1.77m | |||||||
Low Tide | 4:12PM0.79m | 5:18AM0.70m | 6:02PM0.70m | 6:35AM0.59m | 7:09PM0.55m | 7:28AM0.47m | 7:57PM0.41m | 8:11AM0.37m | 8:38PM0.31m | 8:48AM0.30m | 9:14PM0.25m | 9:22AM0.26m | 9:48PM0.24m | |||||||
— | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | |
6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:32 | — | — | 6:32 | — | — | 6:34 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 16 | 19 | 24 | 22 | 25 | 27 | 22 | 25 | 25 | 19 | 18 | 18 | 15 | 18 | 18 | 15 | 14 | 15 | 13 |
Feels °C | 17 | 12 | 17 | 23 | 21 | 24 | 25 | 22 | 25 | 25 | 18 | 16 | 15 | 12 | 17 | 16 | 12 | 11 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SW 21 | SW 18 | SW 16 | SW 15 | SW 14 | SW 13 | WSW 12 | WSW 12 | SW 11 | SW 11 | WSW 13 | WSW 13 | WSW 12 | WSW 15 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | SW 12 |
173 | 2460 | 3122 | 1978 | 1441 | 1471 | 1247 | 447 | 294 | 117 | 172 | 304 | 346 | 808 | 3371 | 2948 | 1887 | 1073 | 782 | 549 | |
Swell 2 Height (m) Direction Period (s) | WSW 10 | SW 10 | SSE 8 | SSE 8 | SSE 8 | SSE 6 | SE 9 | S 12 | S 11 | WSW 12 | WSW 14 | W 11 | W 11 | SW 18 | — | — | SW 7 | SW 16 | SW 15 | SW 15 |
38 | 23 | 237 | 169 | 82 | 12 | 49 | 347 | 188 | 140 | 138 | 21 | 9 | 366 | — | — | 140 | 10 | 84 | 427 | |
Swell 3 Height (m) Direction Period (s) | SW 25 | SW 12 | — | — | — | SE 9 | — | SW 18 | SSE 3 | S 10 | SSE 9 | W 11 | — | — | — | — | — | — | — | — |
162 | 39 | — | — | — | 3 | — | 12 | 2 | 50 | 28 | 21 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 8 | SSE 8 | SE 8 | SE 8 | — | — | — | — | — | S 2 | SSE 4 | SSE 4 | SSE 4 | SSE 5 | SSE 5 | S 4 | SW 13 | SSE 7 | SSE 7 | SSE 8 |
575 | 527 | 551 | 468 | — | — | — | — | — | 1 | 10 | 19 | 31 | 83 | 55 | 28 | 3292 | 603 | 698 | 859 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 109 | 275 | 0 | 0 | 47 | 397 | 397 | 397 | 10 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
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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.










