Surf Forecasts:
Molhes de Mampituba surf forecast from 23 Aug 2026:
- Best quality surf: Sunday 23 Aug, 6PM (local time) - 10ft (3.0m), 14s period, S swell with cross-shore winds.
- Most powerful swell: Sunday 23 Aug, 9PM (local time) - 10ft (3.0m), 13s period, S swell with 3,498 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 12AM (local time) - 5ft (1.5m), 11s period with S swell.
Best Forecast Surf Conditions for Molhes de Mampituba this week:
The surf forecast for Molhes de Mampituba over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 12AM. The primary swell is predicted to be 1.5m and 11s period with a secondary swell of 0.3m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Molhes de Mampituba in the next 16 days are 3.0m 13s and forecast to arrive on Sunday (Aug 23) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Sunday (Aug 23) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 23rd Aug) | 5ft (1.5m) 11s |
| Best Surf | 6PM (Sun 23rd Aug) | 10ft (3.0m) 14s |
| Most Powerful | 9PM (Sun 23rd Aug) | 10ft (3.0m) 13s |
Table - best surf conditions forecast for Molhes de Mampituba over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve been looking over the Mampituba stretch for the next couple of weeks. Let’s be honest, it’s a bit of a mixed bag, but there are a few windows where it’ll be worth paddling out.
The standout session looks like Sunday morning, August 23rd at Molhes de Mampituba. We’ve got a solid 6ft swell rolling in from the south with a 12-second period. That’s a nice, powerful groundswell with good energy behind it (1011). The wind’s coming light from the WSW at 6 mph, putting it cross-offshore, so the faces will be clean. It’s going to be a proper session for the more experienced crew out there – the river/jetties setup should handle that south swell nicely. Just be aware it can get crowded here often, so you’ll want to be on it early.
Moving into the week, Tuesday morning, August 25th is another solid option. The swell drops back a touch to 6ft from the SSE, still with that 12-second period, but the wind swings north at 6 mph, giving us that clean cross-off again (816). It’s not as powerful as Sunday, but the conditions will be glassy. It’s a good one if you missed the weekend.
Wednesday morning, August 26th is also worth a mention. We’ve got 6ft from the SSE, a 14-second period – that’s proper long-period groundswell. Combined energy is strong at 1542. Wind is NNE at 9 mph, cross-off and clean. This is another one that will appeal to experienced surfers. The longer period will make the waves stand up nicely at the jetties, though it might be a bit more lined up than the beach.
Thursday morning, August 27th is the last of the really clean mornings. Swell eases to 4ft from the SSE, 13-second period, with a light NNE cross-off (1046). It’s clean, but the energy is dropping.
Now, there’s a bit of a rough patch from late Friday, August 28th through the weekend and into early September. The wind gets messy, we get some onshore stuff, and the swell direction swings to the east and ENE. There’s some rain around too. Not much to get excited about.
Then we hit Monday afternoon, August 31st and things get serious – a big 12ft east swell with an 8-second period. That’s a massive amount of energy (3042), but it’s short-period windswell and the wind is onshore from the southeast. That’s expert-only territory at best. For a river/jetties spot like this, that much short-period swell with onshore wind will be a washing machine. Honestly, for most people, it’s not worth it.
Looking further ahead, Sunday morning, September 6th is a promising one. We’ve got a clean 6ft swell from the ENE, 8-second period, with glassy conditions – wind is light from the NNE at 3 mph (535). The forecast says “expect very good surf conditions,” and with glass, it’s hard to argue. It’s a week and a half out, so keep an eye on it, but this could be a real gem if the forecasts hold.
Beyond that, the swell drops off, and it looks pretty quiet. So, to sum it up: the best windows are the Sunday and Tuesday mornings at the end of August, and maybe that Sunday morning on September 6th if you’re patient.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Sun afternoon, min 8°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Warm (max 22°C on Thu morning, min 13°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | S 11 | S 12 | S 12 | SSE 13 | SSE 14 | SSE 14 | SSE 13 | SSE 12 | SSE 12 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | ENE 8 | ENE 9 | ENE 9 | E 9 |
Wave Graph | |||||||||||||||||||
514 | 1004 | 2041 | 1893 | 2114 | 1421 | 995 | 807 | 683 | 1924 | 1525 | 1351 | 895 | 528 | 341 | 919 | 349 | 311 | 332 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross-off | cross | cross-on | off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross | cross-on | cross-off |
High Tide | 00:11AM0.27m | 1:06PM0.52m | 00:05AM0.31m | 1:33PM0.54m | 11:46PM0.36m | 2:01PM0.55m | 11:49PM0.41m | 2:28PM0.54m | 00:06AM0.47m | 2:44PM0.51m | 00:30AM0.52m | 2:04PM0.48m | 00:58AM0.56m | ||||||
Low Tide | 9:44PM0.24m | 4:28AM0.15m | 9:03PM0.29m | 5:38AM0.09m | 7:12PM0.28m | 6:27AM0.03m | 7:27PM0.26m | 7:08AM-0.02m | 7:50PM0.24m | 7:46AM-0.06m | 8:18PM0.23m | 8:24AM-0.07m | 8:49PM0.22m | ||||||
— | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | |
— | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | — | 1 | 3 | 1 | 13 |
Temp °C | 11 | 13 | 15 | 11 | 11 | 12 | 10 | 14 | 15 | 15 | 18 | 20 | 19 | 22 | 21 | 20 | 21 | 20 | 19 |
Feels °C | 7 | 9 | 9 | 6 | 8 | 9 | 8 | 12 | 12 | 14 | 16 | 18 | 19 | 21 | 19 | 22 | 22 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 12 | S 12 | SSE 13 | SSE 14 | SSE 14 | SSE 13 | SSE 12 | SSE 12 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | ENE 8 | SSE 13 | ENE 8 | ENE 9 | ENE 9 | E 9 |
514 | 1004 | 1275 | 1893 | 2114 | 1421 | 995 | 807 | 683 | 1924 | 1525 | 1351 | 895 | 181 | 341 | 460 | 349 | 311 | 332 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 8 | ENE 8 | ENE 8 | — | — | — | S 22 | SSE 16 | ENE 5 | — | — | ENE 7 | SSE 13 | — | SSE 12 | SE 11 | SSE 11 | SE 10 |
16 | 7 | 7 | 6 | — | — | — | 9 | 464 | 19 | — | — | 197 | 528 | — | 125 | 59 | 46 | 26 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 4 | WSW 5 | S 12 | — | — | — | — | — | ENE 3 | NE 5 | ENE 5 | ENE 6 | NE 7 | ENE 8 | ENE 8 | ENE 8 | — | — | — |
10 | 37 | 2041 | — | — | — | — | — | 4 | 37 | 17 | 52 | 407 | 337 | 291 | 919 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 138 | 0 | 3 | 128 | 0 | 0 | 156 | 0 | 0 | 218 | 32 | 0 | 168 | 177 | 32 | 84 | 0 |
Best forecast wave conditions in Rio Grande Do Sul | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
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Information about the Molhes de Mampituba Surf forecast
The above surf forecast table for Molhes de Mampituba provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Molhes de Mampituba can be found by selecting the local surf guide option on the grey menu. Our Molhes de Mampituba 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 (Molhes de Mampituba) 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 Molhes de Mampituba 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.
Molhes de Mampituba is 8 km (5 miles) from Torres. If you plan a holiday in Rio Grande Do Sul, look for hotels and other accommodation in Torres. Torres has rooms for a wide range of budgets as well as car hire and transport links.











