Surf Forecasts:
Molhes de Mampituba surf forecast from 18 Aug 2026:
- Best quality surf: Sunday 23 Aug, 12AM (local time) - 7ft (2.2m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 6AM (local time) - 7.5ft (2.3m), 14s period, SSE swell with 2,027 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 6AM (local time) - 4ft (1.2m), 8s period with ENE 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 18) at 6AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.2m and 10s. 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 2.3m 14s and forecast to arrive on Monday (Aug 24) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Tuesday (Aug 25) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 18th Aug) | 4ft (1.2m) 8s |
| Best Surf | 12AM (Sun 23rd Aug) | 7ft (2.2m) 10s |
| Most Powerful | 6AM (Mon 24th Aug) | 7.5ft (2.3m) 14s |
Table - best surf conditions forecast for Molhes de Mampituba over the next 16 days.
The Lowdown
Alright, Rusty here. Let's take a look at the next couple of weeks, and I'll tell you straight – it starts slow, has one hell of a burst in the middle, and then quiets down again.
We open on Tuesday the 18th with a touch of surf. A 4ft swell from the ENE with an 8-second period, and the energy is moderate at 219. A light northerly breeze will keep it clean. It's a surfable start, but nothing to write home about.
Then from Wednesday the 19th to Friday the 21st, the ocean just goes quiet. Swell drops below 3ft, and the winds are messy. It's a few days of flatness, so don't bother grabbing a board.
Things pick up on Saturday the 22nd with a south swell at 5ft, but the southwest wind is blowin' 25 km/h and it's choppy. Not good. Sunday the 23rd has a bit more size, up to 6ft, but still messy.
Now, here's the big one. Monday the 24th is the standout. A solid 8ft of SSE groundswell at a very long 14-second period, with strong energy of 2004. The wind is glassy in the morning. This is a proper winter swell. It's going to be big, powerful, and clean. This is for experienced surfers only – at this size, it's pushing limits. The river jetty will handle it well. Get out there early, because an afternoon easterly breeze will mess it up a bit.
Tuesday the 25th is the next best day. The swell backs down to 5ft from the SSE with a 12-second period. Energy is still strong at 630. A light north cross-offshore wind in the morning will keep it glassy. It's a much more manageable size than Monday, so if you're not up for the big stuff, this is your day. Expect very good surf.
After that, the swell fades. Wednesday the 26th is small and glassy, but weak. From the 27th through the 30th, it's a mix of small swells and tricky winds. There are a few clean pockets, but it's small and inconsistent. Not worth the effort.
The last few days of the window, the 31st through September 2nd, stay inconsistent. There's a bit more energy on the 2nd, with a 4ft SSE swell and a 12-second period, but the winds look rainy and unsettled. It's a long-range hope, but nothing to get excited about just yet.
So, to make it simple: Monday the 24th is the day for the experienced crew. Tuesday the 25th is your call if you want it a bit more user-friendly. Skip the flat spell and don't hold your breath for the end of the window.
Rusty, out.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed morning. Warm (max 25°C on Tue morning, min 16°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 20°C on Thu night, min 8°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | S 7 | ESE 5 | E 6 | E 7 | ENE 7 | SSW 8 | SSW 9 | S 8 | S 8 | S 10 | S 11 | S 11 | SSE 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 293 | 212 | 169 | 122 | 94 | 68 | 62 | 35 | 52 | 124 | 49 | 197 | 631 | 329 | 346 | 913 | 720 | 1046 | 1082 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross-off | cross | cross-on | cross-off |
High Tide | 9:38PM0.24m | 3:23AM0.55m | 3:34PM0.48m | 10:30PM0.22m | 4:06AM0.49m | 4:02PM0.46m | 11:13PM0.21m | 4:51AM0.42m | 4:27PM0.43m | 11:44PM0.22m | 5:45AM0.35m | 12:10PM0.45m | 00:03AM0.24m | 12:39PM0.49m | 00:11AM0.27m | 1:06PM0.52m | 00:05AM0.31m | ||
Low Tide | 11:14PM0.22m | 7:22AM0.23m | 7:41PM0.14m | 7:48AM0.25m | 12:39PM0.32m | 8:22PM0.14m | 8:08AM0.28m | 1:44PM0.37m | 8:57PM0.16m | 8:14AM0.30m | 3:23PM0.39m | 9:26PM0.20m | 3:01AM0.19m | 9:44PM0.24m | 4:28AM0.15m | 9:03PM0.29m | |||
 |  |  | |  | |  | | |  | |  | | | |  | | | | |
 | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — |
mm | — | — | — | — | 1 | — | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 20 | 19 | 17 | 18 | 18 | 19 | 21 | 20 | 17 | 17 | 14 | 13 | 14 | 10 | 12 | 13 | 11 |
Feels °C | 24 | 25 | 20 | 20 | 18 | 19 | 19 | 17 | 21 | 19 | 14 | 13 | 9 | 7 | 8 | 5 | 8 | 8 | 7 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | S 7 | ENE 8 | ENE 7 | E 7 | ENE 7 | E 7 | S 9 | ENE 9 | ENE 9 | S 10 | S 11 | S 11 | SSE 12 |
| kJ | 293 | 212 | 169 | 122 | 94 | 68 | 59 | 32 | 30 | 124 | 49 | 26 | 298 | 26 | 27 | 552 | 720 | 707 | 1082 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | S 10 | S 9 | S 8 | S 7 | S 7 | ENE 8 | S 8 | S 8 | S 8 | S 7 | E 11 | ENE 8 | S 15 | SSE 13 | ENE 9 | ENE 9 | ENE 8 | NE 8 |
| kJ | 11 | 7 | 6 | 1 | 8 | 34 | 62 | 34 | 21 | 10 | 10 | 2 | 22 | 4 | 33 | 17 | 8 | 7 | 3 |
Swell 3 Height (m) Direction Period (s) | E 9 | — | SE 8 | — | SE 12 | S 12 | S 9 | SE 12 | SSE 6 | SE 5 | SE 5 | — | — | S 12 | — | — | — | — | — |
| kJ | 1 | — | 3 | — | 6 | 3 | 27 | 6 | 3 | 1 | 1 | — | — | 3 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SSW 3 | S 3 | S 3 | — | — | ESE 5 | E 6 | SSW 2 | SW 4 | SSW 8 | SSW 9 | S 8 | S 8 | S 10 | — | S 11 | — |
| kJ | — | — | 2 | 1 | 1 | — | — | 35 | 52 | 1 | 9 | 197 | 631 | 329 | 346 | 913 | — | 1046 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 138 | 138 | 138 | 138 | 152 | 156 | 177 | 3 | 138 | 169 | 169 | 169 | 623 | 0 | 3 | 157 | 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.
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