Surf Forecasts:
Molhes de Mampituba surf forecast from 11 Aug 2026:
- Best quality surf: Saturday 15 Aug, 9AM (local time) - 7ft (2.2m), 8s period, E swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 6PM (local time) - 7ft (2.1m), 13s period, SSE swell with 1,420 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 9PM (local time) - 6ft (1.8m), 12s period with SSE 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 Tuesday (Aug 11) at 9PM. The primary swell is predicted to be 1.8m and 12s period with a secondary swell of 0.2m and 8s. 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 2.1m 13s and forecast to arrive on Thursday (Aug 13) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 11th Aug) | 6ft (1.8m) 12s |
| Best Surf | 9AM (Sat 15th Aug) | 7ft (2.2m) 8s |
| Most Powerful | 6PM (Thu 13th Aug) | 7ft (2.1m) 13s |
Table - best surf conditions forecast for Molhes de Mampituba over the next 16 days.
The Lowdown
Alright, let’s talk it out. This is Rusty, and we’re looking at Molhes de Mampituba.
Water temp is 65°, a touch warmer than usual for this time of year. The river mouth setup here is fairly consistent, and the first real action hits Tuesday morning, August 11th. Clean 6ft SSE swell, 12-second period, with a light NNW cross-off breeze. That’s about as good as it gets for an intermediate surfer. The energy is moderate (875). Tuesday afternoon is more cross, so go early.
Wednesday morning, August 12th — still clean, 6ft, 12 seconds, light cross-off. Another solid morning. Energy is 788. Afternoon gets cross again.
Thursday morning, August 13th is a standout. 6ft SSE swell, 14-second period — that’s a long period groundswell. Energy jumps to 1213. Wind is cross from the SW at 9 mph, not glassy, but the wave shape will be excellent. This is the best of the first week. The afternoon turns onshore and messy.
Friday the 14th is blown out. Saturday the 15th morning is surfable — 5ft east swell, short 8-second period, but clean cross-off. Energy is 522. Not a classic, but it’s a wave.
Sunday morning, August 16th — 7ft east swell, 8-second period, clean cross-off. Energy is 827. Fun and punchy, but getting bigger — better for intermediates.
Monday morning, August 17th hits 8ft from the ENE, 8-second period, with a cross-on east wind. That’s big and messy — expert only, and probably more for kite surfing. But Monday afternoon goes glassy, 6ft from the east, 8 seconds. That’s a clean, fun session.
After that, the surf drops off fast. From Tuesday the 18th through the end of the month, it’s mostly small (2-2ft) or blown out. There’s a clean morning on Wednesday the 19th with 5ft, but winds are 16 mph. A couple of glassy mornings on the 22nd and 24th, but the swell is tiny (2-2ft).
Best bets: Tuesday morning, August 11th and Thursday morning, August 13th. The Thursday window has more energy and longer period — that’s the real standout. After that, it’s a long dry spell.
Rusty, out.
Short Range ForecastHeavy rain (total 65mm), heaviest during Wed morning. Very mild (max 16°C on Thu morning, min 11°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 35mm), heaviest during Sun morning. Warm (max 20°C on Sat afternoon, min 16°C on Fri afternoon). Winds decreasing (fresh winds from the NE on Fri night, light winds from the SSW by Mon morning). | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 14 | SSE 14 | SSE 13 | SSE 12 | SSE 13 | SSE 13 | SSE 12 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 9 | E 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 887 | 918 | 761 | 718 | 1143 | 1190 | 623 | 454 | 732 | 968 | 478 | 558 | 482 | 671 | 559 | 509 | 866 | 987 | 549 | 363 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | off | cross-off | cross | on | on | cross-on | cross-on | cross | cross | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross |
High Tide | 4:00PM0.65m | 10:52PM0.40m | 4:57PM0.60m | 11:45PM0.49m | 1:32PM0.39m | 00:32AM0.56m | 1:40PM0.40m | 6:51PM0.44m | 2:04PM0.43m | 7:47PM0.36m | 7:24AM0.21m | 2:33PM0.46m | 8:43PM0.29m | 8:39AM0.24m | 3:03PM0.48m | 9:38PM0.24m | ||||
Low Tide | 8:17PM0.32m | 7:59AM-0.08m | 8:43PM0.33m | 8:40AM-0.09m | 2:29PM0.38m | 9:11PM0.33m | 9:20AM-0.05m | 4:00PM0.33m | 9:40PM0.31m | 9:58AM0.00m | 5:07PM0.26m | 10:10PM0.28m | 6:30AM0.21m | 6:05PM0.20m | 6:55AM0.21m | 6:56PM0.16m | ||||
 |  |  |  |  | | | | | |  | |  | | | |  |  | |  | |
 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — |
 | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — |
mm | 1 | 6 | 16 | 8 | 1 | 14 | 7 | 8 | 4 | 6 | 12 | 3 | — | 3 | 7 | 4 | — | — | — | — |
Temp °C | 13 | 11 | 12 | 14 | 15 | 16 | 16 | 16 | 16 | 17 | 17 | 18 | 20 | 20 | 19 | 20 | 19 | 20 | 21 | 19 |
Feels °C | 10 | 9 | 12 | 13 | 15 | 15 | 16 | 15 | 14 | 14 | 13 | 19 | 20 | 20 | 18 | 18 | 19 | 21 | 23 | 20 |
Swell 1 Height (m) Direction Period (s) | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 14 | SSE 14 | SSE 8 | SSE 12 | SSE 13 | SSE 13 | SSE 12 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 |
| kJ | 887 | 918 | 761 | 718 | 1143 | 1190 | 422 | 454 | 732 | 968 | 452 | 362 | 302 | 355 | 263 | 270 | 546 | 593 | 549 | 363 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | E 5 | ENE 7 | ENE 6 | SSE 13 | — | ESE 7 | SE 7 | — | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 |
| kJ | 6 | 6 | 6 | 17 | 34 | 15 | 623 | — | 210 | 105 | — | 263 | 156 | 106 | 77 | 58 | 33 | 21 | 21 | 19 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 7 | — | — | NE 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 1 | — | — | 9 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NE 4 | ENE 5 | — | — | — | SE 7 | — | E 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — |
| kJ | — | — | 24 | 27 | — | — | — | 244 | — | 181 | 478 | 558 | 482 | 671 | 559 | 509 | 866 | 987 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 156 | 0 | 0 | 0 | 35 | 128 | 138 | 156 | 156 | 177 | 177 | 0 | 156 | 0 | 0 | 32 | 156 | 3 | 156 | 134 |
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.
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