
Surf Forecasts:
Dumps surf forecast from 6 Sep 2026:
- Best quality surf: Thursday 10 Sep, 11AM (local time) - 10ft (3.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 2PM (local time) - 10ft (3.0m), 16s period, SW swell with 4,853 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 8PM (local time) - 6ft (1.8m), 16s 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 Sunday (Sep 06) at 8PM. The primary swell is predicted to be 1.8m and 16s period. 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 16s and forecast to arrive on Thursday (Sep 10) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Thursday (Sep 10) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 6th Sep) | 6ft (1.8m) 16s |
| Best Surf | 11AM (Thu 10th Sep) | 10ft (3.0m) 16s |
| Most Powerful | 2PM (Thu 10th Sep) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Dumps over the next 16 days.
The Lowdown
Righto, let’s have a look at what’s coming up. This forecast is all about one spot: Dumps. It’s an inconsistent sandbar that’s fairly exposed to the swell, and it needs a good setup to fire. There’s a bit of a gap at the start here – the first surf on offer kicks off Sunday afternoon, September 6th.
Sunday afternoon the 6th sees a solid 7ft SW groundswell rolling in with a very long 16-second period. The combined swell energy is strong at 1978, and with a light SE cross-off breeze, conditions will be clean. But listen, the water temperature is sitting at 54°, which is 6° colder than normal for this time of year – that’s really unusual, so you’ll want a good thick wetsuit. This is excellent for experienced surfers only, as that size and power will be too much for beginners. The wind stays clean into Monday morning the 7th with glassy conditions and a similar 7ft SW swell (period 14 seconds, energy 1471). Monday afternoon drops a touch to 6ft, still clean. Tuesday morning the 8th is glassy again with 3ft WSW swell (period 12 seconds, energy 523) – good conditions, but the size is dropping right off. By Tuesday afternoon it’s only 2ft and very ordinary.
Wednesday the 9th is small again, with a 3ft WSW swell in the morning (energy 325), but still clean. The standout of the whole run looks to be Thursday morning the 10th. We get a jump to 10ft SW swell with a 16-second period, and the combined energy is massive at 4838. The wind is a light S cross-off, so it’ll be clean. This is solid, expert-only territory – powerful, long-period groundswell that’ll be best at the point and reef setups, but at a sandbar like Dumps, it might break a bit straight. Still, for the crew who know the bank, this is the best on offer.
The surf stays decent through Friday the 11th (7ft WSW, period 13 seconds, energy 1452) but the wind picks up to 16 mph, making it more marginal. Saturday the 12th afternoon brings another strong pulse: 8ft SW swell, 16-second period, energy 2668, with a gentle SSE cross-off – that’s another excellent window for experienced surfers. Sunday the 13th turns poor with strong onshore winds, and Monday the 14th is even worse. Tuesday the 15th sees a 10ft WSW swell but with strong cross-onshore winds – that’s messy and more for kite surfing than paddling. The second week is a mixed bag: Wednesday the 16th and Thursday the 17th have clean cross-off winds with 7ft and 6ft SW swells respectively, but the wind is up to 22 mph at times. Friday the 18th is small and clean in the morning (5ft, energy 522), then Saturday the 19th morning turns glassy again with a 6ft SW swell and a 15-second period, energy 1436 – that’s another sneaky good session for those in the know. Sunday the 20th is bigger (8ft) but with onshore wind, and then Monday the 21st wraps it up with clean 6ft SW swell and light winds.
Overall, the best bet is Thursday morning September 10th, with Saturday afternoon the 12th and Saturday morning the 19th as solid backup options. This spot is inconsistent, so when it lines up, you gotta go.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon afternoon, min 16°C on Wed morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Wed afternoon, min 13°C on Thu night). Mainly fresh winds. | |||||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 16 | SW 15 | SW 14 | SW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 13 | WSW 13 | SW 12 | SW 16 | SW 15 | WSW 14 | WSW 13 | WSW 12 | SW 13 | SW 13 | SW 16 | SW 14 |
Wave Graph | ||||||||||||||||||||
1978 | 1441 | 1471 | 1247 | 473 | 294 | 140 | 151 | 304 | 351 | 864 | 4838 | 3281 | 2180 | 1452 | 878 | 553 | 1127 | 2668 | 2053 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-off | glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross |
High Tide | 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 | 4:05PM1.88m | 4:23AM1.74m | |||||||
Low Tide | 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 | 9:53AM0.27m | 10:19PM0.26m | |||||||
— | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | |
6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:32 | — | — | 6:32 | — | — | 6:34 | — | — | 6:35 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Temp °C | 25 | 23 | 24 | 26 | 21 | 23 | 25 | 19 | 18 | 19 | 15 | 17 | 18 | 14 | 15 | 15 | 14 | 18 | 22 | 18 |
Feels °C | 24 | 22 | 23 | 25 | 20 | 23 | 25 | 18 | 16 | 16 | 13 | 15 | 15 | 10 | 10 | 9 | 12 | 15 | 21 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | SW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 13 | WSW 13 | SW 12 | SW 16 | SW 15 | WSW 14 | WSW 13 | WSW 12 | SW 13 | SW 13 | SW 16 | SW 14 |
1978 | 1441 | 1471 | 1247 | 473 | 294 | 140 | 151 | 304 | 351 | 864 | 4838 | 3281 | 2180 | 1452 | 878 | 553 | 1127 | 2668 | 2053 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 7 | SE 9 | S 12 | S 11 | SW 11 | WSW 14 | SSE 9 | W 11 | SW 20 | — | — | — | — | SW 16 | WSW 12 | SW 16 | — | S 8 |
161 | 80 | 9 | 52 | 336 | 188 | 117 | 138 | 15 | 9 | 322 | — | — | — | — | 90 | 298 | 661 | — | 115 | |
Swell 3 Height (m) Direction Period (s) | — | — | SE 9 | SE 13 | SW 18 | SW 16 | S 10 | SSE 9 | W 11 | SE 10 | W 16 | — | — | — | — | — | — | — | — | S 9 |
— | — | 3 | 7 | 12 | 41 | 50 | 28 | 21 | 4 | 5 | — | — | — | — | — | — | — | — | 26 | |
Wind waves Height (m) Direction Period (s) | SE 8 | — | — | — | — | — | S 2 | SE 3 | S 3 | S 4 | SSE 4 | SE 4 | S 6 | SSE 7 | SSE 7 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | — |
413 | — | — | — | — | — | 1 | 2 | 5 | 9 | 52 | 19 | 121 | 473 | 493 | 578 | 579 | 424 | 250 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 0 | 0 | 397 | 336 | 139 | 1266 | 0 | 9 | 0 | 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.










