Surf Forecasts:
Dumps surf forecast from 7 Sep 2026:
- Best quality surf: Thursday 10 Sep, 5AM (local time) - 4.5ft (1.3m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 12 Sep, 8PM (local time) - 8ft (2.5m), 16s period, SW swell with 3,116 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 8PM (local time) - 5ft (1.5m), 13s period with WSW 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 Monday (Sep 07) at 8PM. The primary swell is predicted to be 1.5m and 13s period with a secondary swell of 1.1m and 12s. 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 2.5m 16s and forecast to arrive on Saturday (Sep 12) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Saturday (Sep 12) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 7th Sep) | 5ft (1.5m) 13s |
| Best Surf | 5AM (Thu 10th Sep) | 4.5ft (1.3m) 16s |
| Most Powerful | 8PM (Sat 12th Sep) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Dumps over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on the table for the next couple of weeks.
Right off the bat, there’s no surf to get excited about for a few days. The first real window opens Monday afternoon the 7th, but truth be told, it’s pretty average. We’re looking at Dumps, a sandbar setup, and it’s inconsistent at the best of times. The water temperature is a chilly 52°, a massive 8° colder than usual for this time of year – that’s seriously unusual, so you’ll want a thick suit.
Monday afternoon the 7th sees a 6ft SW swell with a period of 13 seconds. The combined energy is 1247, so there’s some moderate power in the water, but the wind is a light cross-shore from the SSW at 3 mph, so it’ll be a bit bumpy. Not a standout, just a warm-up.
The real action starts to build towards the end of the first week and into the second. Thursday morning the 10th brings a bigger pulse: 8ft from the SW at a 15-second period. That’s a proper groundswell with 2491 energy, but the morning has cloudy skies and a S wind at 9 mph. It’s clean, but that wind is cross-offshore. Still, for an inconsistent spot like Dumps, seeing this much life is something.
If you can wait, the absolute standout is Sunday morning the 13th. The wind swings offshore from the SE at a light 6 mph, grooming a 7ft SW groundswell (14-second period). Combined energy is a solid 1641. The data flags this as excellent for experienced surfers, and I’d agree. That’s your session if you’ve got the skills – Dumps will have some proper shape and power, and the wind will keep it glassy. Crowds are possible here on a day like this.
After that, the forecast gets gnarly. From Monday the 14th through Tuesday the 15th, onshore winds from the NNW rip in at 12-22 mph, turning the surf into a lumpy mess. Not worth paddling out.
Then things go full chaos. Wednesday the 16th sees a massive 15ft WSW swell with a 16-second period and energy over 10000 – that’s well into expert-only territory, if not too big altogether. The wind is cross-shore or offshore, but it’s just too much for this break. The same goes for Thursday the 17th (15ft SW / 14 seconds) and Tuesday the 22nd (12ft SW / 12 seconds). These are days for watching, not paddling.
So, to keep it simple: if you’re an experienced surfer, be at Dumps on Sunday morning the 13th. That’s the clean, powerful window. Everything else in this 16-day run is either too small, too messy, or too big.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 14°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Sun morning. Very mild (max 17°C on Thu afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the SSE on Fri afternoon, light winds from the SE by Sat night). | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 13 | WSW 13 | WSW 12 | SW 15 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | SW 15 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1247 | 447 | 294 | 137 | 151 | 304 | 346 | 669 | 2491 | 1722 | 1289 | 830 | 692 | 421 | 1889 | 2704 | 2372 | 1641 | 1190 | 790 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross | cross-on |
High Tide | 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 | 4:05PM1.88m | 4:23AM1.74m | 4:37PM1.83m | 4:54AM1.67m | |||||||
Low Tide | 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 | 9:53AM0.27m | 10:19PM0.26m | 10:23AM0.31m | 10:48PM0.33m | |||||||
 |  | | | | | |  |  | | |  | |  | | |  |  | | | |
 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — |
 | 6:30 | — | — | 6:31 | — | — | 6:32 | — | — | 6:32 | — | — | 6:34 | — | — | 6:35 | — | — | 6:35 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | — |
Temp °C | 26 | 22 | 23 | 24 | 21 | 20 | 21 | 16 | 17 | 17 | 15 | 16 | 15 | 14 | 16 | 17 | 15 | 17 | 20 | 17 |
Feels °C | 25 | 22 | 22 | 23 | 20 | 19 | 19 | 15 | 14 | 13 | 11 | 12 | 10 | 11 | 12 | 13 | 12 | 16 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 13 | WSW 13 | WSW 12 | SW 15 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | SW 15 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 |
| kJ | 1247 | 447 | 294 | 137 | 151 | 304 | 346 | 669 | 2491 | 1722 | 1289 | 830 | 692 | 421 | 1889 | 2704 | 2372 | 1641 | 1190 | 790 |
Swell 2 Height (m) Direction Period (s) | SE 8 | S 12 | S 11 | SW 11 | WSW 14 | SSE 9 | S 8 | SW 17 | — | — | — | — | — | SW 14 | — | SW 17 | — | SSE 8 | S 7 | S 7 |
| kJ | 37 | 347 | 188 | 117 | 138 | 15 | 5 | 293 | — | — | — | — | — | 277 | — | 885 | — | 143 | 108 | 126 |
Swell 3 Height (m) Direction Period (s) | SE 13 | SW 18 | SW 16 | S 10 | SSE 9 | W 11 | W 11 | SSE 8 | — | — | — | — | — | SSW 11 | — | — | — | — | NNW 4 | NNW 6 |
| kJ | 7 | 12 | 41 | 71 | 28 | 21 | 9 | 7 | — | — | — | — | — | 47 | — | — | — | — | 7 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | S 3 | S 4 | S 3 | S 3 | — | S 4 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | — | — | — |
| kJ | — | — | — | — | 5 | 6 | 6 | 6 | — | 35 | 293 | 686 | 801 | 574 | 1003 | 730 | 453 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 9 | 0 | 11 | 0 | 0 | 0 | 31 | 0 | 15 | 336 | 10 | 10 | 375 | 10 | 139 | 140 | 0 | 0 | 9 | 4 |
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.
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