Surf Forecasts:
Double Mouth surf forecast from 2 Sep 2026:
- Best quality surf: Thursday 3 Sep, 8AM (local time) - 3.5ft (1.1m), 12s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 2AM (local time) - 10ft (3.0m), 18s period, SSW swell with 4,646 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 8AM (local time) - 3.5ft (1.1m), 12s period with SSW swell.
Best Forecast Surf Conditions for Double Mouth this week:
The surf forecast for Double Mouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 03) at 8AM. The primary swell is predicted to be 1.1m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Double Mouth in the next 16 days are 3.0m 18s and forecast to arrive on Monday (Sep 07) 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 3.0m 8s period and expected on Monday (Sep 07) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 3rd Sep) | 3.5ft (1.1m) 12s |
| Best Surf | 8AM (Thu 3rd Sep) | 3.5ft (1.1m) 12s |
| Most Powerful | 2AM (Mon 7th Sep) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Double Mouth over the next 16 days.
The Lowdown
Alright, it’s Rusty here. Let’s talk about what’s on the table for Double Mouth.
Look, I’ll be straight with you – the next 16 days are a tough stretch at Double Mouth. There are long gaps where the surf just isn’t worth paddling out for, but we do have a couple of moments that might get the heart beating a little faster. The overall pattern is messy, with lots of wind and tough conditions, but hang in there.
We're looking at a pretty barren start. There’s no real surf on offer for the first couple of days. The early part of the period is sidelined by cross-onshore winds and small, weak swell, with combined energy readings in the hundreds – nothing to get excited about. We don’t see a proper window until we get a bit further in.
The best chance for a wave comes around Monday the 14th of September, early in the morning. This is where we get a bit of a pulse. Swell is coming from the SSW at 5 ft, with a period of around 14 seconds – that’s a proper groundswell, bringing good shape and energy. The combined energy is a solid 1016 (moderate). The wind is light from the NE, keeping it clean. This is your standout, but don’t expect perfection. It's a reef set-up, and with that period, it might wall up a bit, but it’s the best you’ll get.
Other than that, the rest of the 16-day window is patchy. There’s a fleeting moment on the weekend of the 6th and 7th, but the wind is howling from the NE at 22-25 mph, making the sea a mess. The swell is there, but clean it is not. Later on, towards Wednesday the 16th and Thursday the 17th, we see some more SSW swell, but winds stay cross-shore and fresh, ruining the surface. The morning of the 17th gets a brief window of cross-offshore wind from the WSW at 19 mph, but it’s a small, weak swell.
Honestly, for the majority of this forecast, the wind is just too strong or in the wrong direction, and the swell often comes with short periods or odd directions. For the many days of poor quality, this beach-and-reef setup looks more interesting for the kite crew than for paddle surfing. Overall, Monday the 14th is your one real chance to get a few proper waves, so circle that date.
Rusty.
Short Range ForecastHeavy rain (total 39mm), heaviest during Thu night. Warm (max 22°C on Thu morning, min 16°C on Fri morning). Winds increasing (light winds from the WSW on Thu morning, fresh winds from the S by Thu night). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sat afternoon. Warm (max 25°C on Tue morning, min 16°C on Sat night). Winds decreasing (strong winds from the NE on Mon afternoon, light winds from the E by Tue morning). | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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) | SSW 14 | SSW 13 | SSW 11 | S 11 | SSE 8 | SSE 10 | SSE 9 | SE 8 | SE 8 | SSW 11 | SSW 11 | S 10 | SSW 21 | SSW 18 | SSW 15 | SSW 14 | SSW 14 | S 12 | S 11 | S 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1191 | 465 | 158 | 233 | 1485 | 2039 | 1376 | 381 | 555 | 370 | 343 | 250 | 1042 | 4646 | 1753 | 752 | 235 | 221 | 154 | 76 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross | cross-on | on | on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-off |
High Tide | 6:36PM1.50m | 6:51AM1.29m | 7:18PM1.34m | 7:40AM1.13m | 8:22PM1.17m | 9:21AM0.99m | 10:47PM1.07m | 12:16PM1.05m | 00:51AM1.17m | 1:32PM1.24m | 1:50AM1.32m | 2:18PM1.44m | 2:32AM1.46m | |||||||
Low Tide | 00:51AM0.30m | 12:56PM0.33m | 1:38AM0.45m | 1:48PM0.50m | 2:59AM0.60m | 3:39PM0.65m | 5:41AM0.61m | 6:29PM0.60m | 7:16AM0.46m | 7:43PM0.42m | 8:04AM0.29m | 8:28PM0.26m | ||||||||
 |  |  |  |  |  | |  |  | |  | | | | | |  |  | | | |
 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — |
 | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — |
mm | — | — | — | 1 | 30 | 6 | — | — | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 18 | 19 | 22 | 21 | 19 | 17 | 17 | 16 | 16 | 17 | 17 | 17 | 17 | 18 | 19 | 20 | 19 | 25 | 23 | 20 |
Feels °C | 17 | 17 | 23 | 21 | 17 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 13 | 13 | 14 | 15 | 15 | 25 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | E 8 | S 11 | ENE 9 | ENE 10 | SSE 9 | SE 8 | SE 8 | SSW 11 | SSW 11 | S 10 | SSW 21 | SSW 18 | SSW 15 | SSW 14 | S 12 | ENE 9 | ENE 9 | ENE 8 |
| kJ | 1191 | 465 | 140 | 233 | 126 | 183 | 1376 | 381 | 555 | 370 | 343 | 250 | 1042 | 4646 | 1753 | 752 | 235 | 631 | 436 | 300 |
Swell 2 Height (m) Direction Period (s) | E 9 | — | SSW 11 | ENE 8 | SW 12 | — | ENE 9 | S 9 | SSW 14 | E 10 | SE 7 | SSW 24 | SSW 10 | — | — | S 13 | SSW 14 | S 12 | S 11 | S 10 |
| kJ | 56 | — | 158 | 101 | 73 | — | 54 | 351 | 143 | 51 | 54 | 220 | 167 | — | — | 168 | 210 | 221 | 154 | 76 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 12 | SW 12 | — | — | E 10 | S 15 | ENE 10 | S 14 | — | S 13 | S 13 | — | — | — | — | SW 13 | SW 13 | SW 12 |
| kJ | — | — | 124 | 52 | — | — | 51 | 157 | 33 | 35 | — | 32 | 87 | — | — | — | — | 61 | 58 | 35 |
Wind waves Height (m) Direction Period (s) | — | ENE 8 | — | S 3 | SSE 8 | SSE 10 | SE 9 | — | SE 8 | ESE 8 | E 10 | E 6 | E 6 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | — | — | — |
| kJ | — | 184 | — | 5 | 1485 | 2039 | 853 | — | 485 | 277 | 268 | 152 | 187 | 483 | 821 | 1055 | 1101 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 274 | 99 | 5 | 5 | 652 | 1802 | 2958 | 535 | 408 | 923 | 104 | 535 | 408 | 408 | 318 | 479 | 101 | 14 | 147 | 0 |
Best forecast wave conditions in Eastern Cape - Wild Coast | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
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Information about the Double Mouth Surf forecast
The above surf forecast table for Double Mouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Double Mouth can be found by selecting the local surf guide option on the grey menu. Our Double Mouth 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 (Double Mouth) 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 Double Mouth 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.
Double Mouth is 45 km (28 miles) from the city of Butterworth. If you plan a holiday in Eastern Cape - Wild Coast, look for hotels and other accommodation in Butterworth. Butterworth has rooms for a wide range of budgets as well as car hire and transport links.
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