Surf Forecasts:
Dumps surf forecast from 29 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 11PM (local time) - 11ft (3.5m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 5AM (local time) - 11ft (3.5m), 14s period, SW swell with 4,081 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 11AM (local time) - 4.5ft (1.4m), 14s 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 Saturday (Aug 29) at 11AM. The primary swell is predicted to be 1.4m and 14s period with a secondary swell of 0.6m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Dumps in the next 16 days are 3.5m 14s and forecast to arrive on Wednesday (Sep 02) 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 2.5m 7s period and expected on Friday (Sep 04) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sat 29th Aug) | 4.5ft (1.4m) 14s |
| Best Surf | 11PM (Tue 1st Sep) | 11ft (3.5m) 14s |
| Most Powerful | 5AM (Wed 2nd Sep) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Dumps over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s coming up at Dumps.
First thing to note, the water is sitting at 57°, which is a solid 3° colder than what you’d normally expect for this time of year. That’s a proper chill, so make sure you’re geared up.
The forecast starts with a nice little pulse. The standout window is definitely Tuesday, September 1st and Wednesday, September 2nd. Tuesday morning brings a 8ft swell from the SW with a long 13-second period, super light airs, and the combined energy is pumping at 2187. That’s quality groundswell. Wednesday morning is a real beast: 10ft swell from the SW, a 14-second period, and a massive 3518 on the energy scale. This is big, powerful stuff. Because of that size and long period, this is strictly for experienced surfers – it’ll be too much for beginners, and those long lines will work best on a point or reef, not a beach break. Winds are cross-offshore and light, so it’ll be glassy.
Before that, starting Saturday, August 29th morning, there’s a 5ft WSW swell with a 14-second period and 910 combined energy. A clean, easy start to the weekend, especially with that light easterly breeze.
Sunday, August 30th sees the swell jump to 8ft and then 8ft, but the wind picks up to 15 mph from the SSE, making it cross-off and a bit messy. Still surfable, just not as clean.
After that big midweek pulse, things go quiet. Thursday, September 3rd is a complete washout with strong 25 mph winds and rain. Friday, September 4th has strong offshore winds that clean it up, but the swell drops to 8ft and then 4ft, and the energy is low. The wind makes paddling a chore.
From Saturday, September 5th through to Wednesday, September 10th, the swell is tiny and weak, mostly under 3ft with combined energy in the double digits. There’s a small bump on Sunday, September 7th with 6ft but the wind is onshore and choppy. Not worth the effort.
We then hit a gap of several days before Saturday, September 12th and Sunday, September 13th show a new 8ft to 8ft SW swell. The period is solid at 13-14 seconds and energy is in the 2000s, but the wind is cross-onshore and light, making it bumpy and marginal. It’s a promising late call, but with the wind being a bit iffy, don’t book the time off just yet.
So, to sum it up: the real standout is Tuesday the 1st and Wednesday the 2nd – that’s the one for the experienced crew. The rest is either small, windy, or too far out to be sure of.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Sat morning, min 10°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu morning. Very mild (max 17°C on Wed afternoon, min 11°C on Tue morning). Winds increasing (calm on Thu morning, strong winds from the SE by Thu night). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | WSW 14 | SW 10 | WSW 13 | SW 13 | WSW 12 | WSW 12 | SW 11 | SW 11 | SW 11 | SW 13 | SW 13 | SW 14 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | S 9 | S 9 | SSW 11 | SSW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 822 | 768 | 936 | 2073 | 1471 | 1158 | 1019 | 875 | 763 | 2187 | 3020 | 4022 | 3518 | 2931 | 1648 | 1236 | 850 | 1075 | 885 | 323 | 366 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | off | off | off |
High Tide | 4:05PM1.82m | 4:21AM1.72m | 4:35PM1.83m | 4:53AM1.70m | 5:08PM1.81m | 5:28AM1.64m | 5:44PM1.74m | 6:07AM1.55m | 6:26PM1.64m | 6:55AM1.44m | 7:19PM1.51m | 8:01AM1.33m | 8:36PM1.38m | ||||||||
Low Tide | 9:52AM0.30m | 10:15PM0.29m | 10:21AM0.30m | 10:47PM0.29m | 10:52AM0.33m | 11:21PM0.34m | 11:26AM0.40m | 11:59PM0.41m | 12:04PM0.49m | 00:44AM0.52m | 12:52PM0.62m | 1:46AM0.64m | 2:06PM0.74m | 3:24AM0.73m | |||||||
 | |  |  | |  | | | | | | |  | | |  | | | | | | |
 | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — |
 | — | 6:24 | — | — | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:29 | — | — | 6:29 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — |
Temp °C | 17 | 16 | 15 | 14 | 14 | 12 | 12 | 14 | 12 | 14 | 16 | 15 | 15 | 17 | 14 | 14 | 15 | 14 | 15 | 18 | 14 |
Feels °C | 15 | 12 | 11 | 8 | 9 | 7 | 8 | 11 | 10 | 13 | 13 | 14 | 14 | 15 | 11 | 7 | 8 | 6 | 6 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | SW 10 | SW 9 | SW 13 | WSW 12 | WSW 12 | SW 11 | SW 11 | SW 11 | SW 13 | SW 13 | SW 14 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | SW 11 | SSW 14 | SSW 11 | SSW 11 |
| kJ | 822 | 627 | 582 | 2073 | 1471 | 1158 | 1019 | 875 | 763 | 2187 | 3020 | 4022 | 3518 | 2931 | 1648 | 1236 | 850 | 263 | 217 | 323 | 366 |
Swell 2 Height (m) Direction Period (s) | S 11 | WSW 14 | WSW 13 | SSE 10 | — | SSE 10 | SE 11 | SE 10 | SW 13 | — | — | — | — | — | — | SSW 15 | SSW 15 | WSW 12 | WSW 12 | WSW 11 | WSW 10 |
| kJ | 88 | 659 | 936 | 11 | — | 10 | 5 | 4 | 424 | — | — | — | — | — | — | 45 | 158 | 250 | 111 | 133 | 59 |
Swell 3 Height (m) Direction Period (s) | SSE 13 | S 11 | SSE 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 15 | WSW 11 | S 15 | S 14 |
| kJ | 68 | 61 | 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 242 | 66 | 109 | 106 |
Wind waves Height (m) Direction Period (s) | — | SW 10 | — | — | SSE 4 | SSE 7 | — | — | — | — | — | — | — | — | S 6 | S 5 | S 5 | S 9 | S 9 | SSE 7 | SSE 7 |
| kJ | — | 768 | — | — | 43 | 102 | — | — | — | — | — | — | — | — | 139 | 85 | 97 | 1075 | 885 | 679 | 382 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 31 | 31 | 60 | 336 | 0 | 0 | 0 | 0 | 0 | 9 | 4 | 0 | 397 | 0 | 116 | 397 | 993 | 1224 | 10 | 0 |
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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