Surf Forecasts:
Dumps surf forecast from 15 Sep 2026:
- Best quality surf: Friday 18 Sep, 5AM (local time) - 5.5ft (1.7m), 11s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 2AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,383 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 5AM (local time) - 5.5ft (1.7m), 11s 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 Friday (Sep 18) at 5AM. The primary swell is predicted to be 1.7m and 11s 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 14s and forecast to arrive on Wednesday (Sep 16) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Saturday (Sep 19) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 18th Sep) | 5.5ft (1.7m) 11s |
| Best Surf | 5AM (Fri 18th Sep) | 5.5ft (1.7m) 11s |
| Most Powerful | 2AM (Wed 16th Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Dumps over the next 16 days.
The Lowdown
Alright folks, let's take a good look at what's on the table. The main event is a south-west swell, and it's got some serious grunt behind it, but the wind is going to be a real talking point. The water temp is about what you'd expect for this time of year, nothing too crazy.
We've got a bit of a slow start, then it kicks off properly. The first real day to get excited about is Wednesday the 24th. That Thursday afternoon is looking like the standout of the whole run. We've got an 8ft south-southwest swell with a 13-second period. The wave energy is solid at 1975, and the wind is a light breeze. That's clean, grunty, and holding good shape. The comments say it's excellent for experienced surfers, and I agree – at 8ft, it's into that more serious territory, so the beginners should give it a miss. That's the one to circle on the calendar.
Before that, the previous week is a bit of a battle. We've got a decent sized swell, like Wednesday morning the 16th with 8ft SW swell and 4019 wave energy – that's a lot of power – but it's blowing a 35 km/h cross-off. It'll be lumpy and hard work. The standouts in that first week are tough to find. Maybe Friday the 18th afternoon? 6ft SW swell, 13-second period, and an offshore wind. That'll be clean, but the energy is only moderate at 958, and the rating isn't a barnstormer.
Later in the run, a few mornings look promising for a smaller, cleaner session. Like Monday the 28th morning: 3ft WSW swell with a light offshore ESE breeze and a 13-second period. That's a nice, glassy little window for a smaller board. The wave energy is low at 346, so it won't be pumping, but it'll be clean.
There's a frustrating gap after the 28th, with nothing worth paddling out for until we finally see a tiny, glassy 2ft on the 1st of October. That's barely a ripple.
All in all, if you're an experienced surfer looking for a proper session, aim for Thursday the 24th afternoon at Dumps. It's the one day where the size, period, and wind all click. For anyone else, the smaller, cleaner windows on the 21st or 28th mornings will be your best bet for a fun but not life-changing surf.
Stay stoked,
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Tue night. Very mild (max 19°C on Fri afternoon, min 12°C on Tue night). Winds increasing (light winds from the W on Tue night, fresh winds from the SSE by Wed afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Mon afternoon, min 14°C on Fri night). Winds decreasing (fresh winds from the SE on Sat afternoon, light winds from the ESE by Mon morning). | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 3383 | 2494 | 999 | 1446 | 1180 | 945 | 726 | 640 | 946 | 811 | 505 | 799 | 1639 | 1288 | 983 | 636 | 545 | 456 | 293 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross-off |
High Tide | 5:57AM1.48m | 6:09PM1.50m | 6:32AM1.36m | 6:43PM1.36m | 7:19AM1.25m | 7:33PM1.24m | 8:50AM1.17m | 9:28PM1.15m | 11:21AM1.20m | 11:45PM1.20m | 12:29PM1.32m | 00:43AM1.31m | |||||||
Low Tide | 11:46PM0.52m | 11:50AM0.60m | 00:18AM0.63m | 12:24PM0.73m | 00:57AM0.74m | 1:11PM0.85m | 2:06AM0.84m | 3:12PM0.95m | 4:29AM0.87m | 5:44PM0.89m | 6:01AM0.79m | 6:43PM0.77m | |||||||
 |  | |  | | | | | | | | | | |  | | | | | |
 | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — |
 | 6:37 | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — | — | 6:38 | — | — | 6:39 | — | — | 6:40 | — |
mm | 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 15 | 14 | 15 | 17 | 14 | 16 | 19 | 15 | 18 | 21 | 17 | 19 | 19 | 16 | 21 | 24 | 22 |
Feels °C | 10 | 8 | 6 | 7 | 7 | 9 | 7 | 12 | 12 | 10 | 13 | 15 | 13 | 15 | 15 | 13 | 21 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | SW 11 |
| kJ | 3383 | 2494 | 999 | 1446 | 1180 | 945 | 726 | 640 | 946 | 811 | 505 | 799 | 1639 | 1288 | 983 | 636 | 545 | 456 | 293 |
Swell 2 Height (m) Direction Period (s) | WNW 7 | SW 14 | W 13 | W 13 | — | — | — | W 20 | SW 18 | SW 16 | SW 14 | SW 18 | — | — | — | — | — | SW 15 | SSE 6 |
| kJ | 168 | 849 | 878 | 324 | — | — | — | 7 | 12 | 127 | 251 | 82 | — | — | — | — | — | 9 | 27 |
Swell 3 Height (m) Direction Period (s) | NNW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 |
| kJ | 57 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 48 |
Wind waves Height (m) Direction Period (s) | — | SSW 9 | SSE 5 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | SE 6 | SSE 6 | SE 6 | SSE 6 | SSE 7 | SSE 6 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 |
| kJ | — | 676 | 143 | 417 | 311 | 319 | 202 | 139 | 369 | 152 | 196 | 445 | 322 | 157 | 254 | 145 | 72 | 61 | 74 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 9 | 336 | 173 | 47 | 397 | 911 | 10 | 4 | 1978 | 10 | 10 | 173 | 10 | 10 | 397 | 0 | 0 | 9 | 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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