
Surf Forecasts:
Tramandai surf forecast from 3 Sep 2026:
- Best quality surf: Monday 7 Sep, 12AM (local time) - 5ft (1.6m), 9s period, SSE swell with glassy winds.
- Most powerful swell: Sunday 6 Sep, 12PM (local time) - 8ft (2.4m), 9s period, SSW swell with 880 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 6PM (local time) - 3.5ft (1.1m), 11s period with SE swell.
Best Forecast Surf Conditions for Tramandai this week:
The surf forecast for Tramandai over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 03) at 6PM. The primary swell is predicted to be 1.1m and 11s period with a secondary swell of 0.9m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tramandai in the next 16 days are 2.4m 9s and forecast to arrive on Sunday (Sep 06) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 8s period and expected on Thursday (Sep 10) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 3rd Sep) | 3.5ft (1.1m) 11s |
| Best Surf | 12AM (Mon 7th Sep) | 5ft (1.6m) 9s |
| Most Powerful | 12PM (Sun 6th Sep) | 8ft (2.4m) 9s |
Table - best surf conditions forecast for Tramandai over the next 16 days.
The Lowdown
G’day, it’s Rusty.
Alright, let’s break down what’s coming for Tramandai over the next couple of weeks. The first real chance to get wet is Thursday morning, September 3rd. We’ve got clean 5ft swell from the ESE with an 11-second period, combined energy at 590—moderate. The wind is light offshore from the WNW, so the river mouth is looking smooth and lined up. The water is 60°, which is a bit colder than usual for this time of year—nothing crazy, just a touch of chill. Thursday afternoon is also a goer with 4ft, cross-off breeze, still clean. That’s the best of the early days.
Friday morning, September 4th, drops hard. Swell is only 2ft with a cross-shore wind, energy weak at 122. Conditions stay poor right through to Saturday evening—wind onshore or cross-on, waves small and messy. Not worth paddling out.
Sunday, September 6th, we see a jump in size. The morning has 7ft from the south with a moderate cross-off breeze and clean conditions, though the energy is strong at 605. The swell period is only 8 seconds, so it’s a bit of wind swell—fun enough for a bigger board, but not the cleanest wall. The afternoon is similar with 6ft. It’s labelled marginal, but if you’re keen for a punch, it’s doable.
Monday, September 7th, the wind swings east and onshore, making things choppy. Tuesday is worse—strengthening onshore winds, lumpy conditions. Swell is up to 6ft on Tuesday but messy, and with a 6-second period, it’s crumbly. Not great.
Wednesday, September 9th, the morning has 7ft from the ENE, but with a light cross-shore wind and some lumpiness, it’s only marginal. Energy is strong at 876, but quality isn’t there.
Now, Thursday, September 10th, brings a real treat. The morning has 5ft from the ENE, a light cross-off breeze from the WSW, and clean conditions. The afternoon is even better—4ft from the ENE, clean offshore wind from the WNW. This is a solid, clean window.
Friday, September 11th, is another standout. The morning is glassy—zero wind, 5ft from the ENE, 9-second period, and combined energy of 356. That’s the kind of morning you set an alarm for. The afternoon turns onshore and spoils it, so get out early.
The weekend after that, September 12th and 13th, gets hammered by strong southerly winds and onshore chop. Waves are 5ft to 7ft but messy. Not worth it.
Monday, September 14th, sees a big pulse of energy—6ft from the south with an 11-second period, energy at 1548. But the wind is cross-shore and moderate, so it’s lumpy. The afternoon turns onshore.
Then, Tuesday, September 15th, is a beauty. The morning is glassy, 5ft from the south, 10-second period, energy at 536. The afternoon is also glassy, 5ft from the south. This is a clean, fun day for intermediate surfers.
Wednesday, September 16th, the wind picks up onshore and the quality drops. Waves are 4ft to 4ft but choppy.
Now, Thursday, September 17th, is for the experienced crew. The morning has 5ft from the SSE with a very long 17-second period—that’s groundswell, and it’s clean with a cross-off breeze. The energy is very strong at 1478. This is a big, powerful swell, and with the long period, it’s going to be better at the river mouth where it can line up. The afternoon jumps to 7ft with a 16-second period, but the wind swings to a fresh cross-shore, making it lumpy and tricky. If you’re expert, the morning is your window.
Friday, September 18th, is still holding 6ft to 5ft from the SSE with long periods of 14 seconds, but the wind is onshore or cross-on, so it’s messy. The energy is high, but the quality is not for the faint-hearted.
Overall, the best on offer is Thursday morning, September 10th, and Friday morning, September 11th—clean, waist-to-chest high waves, light winds, and good energy. The glassy morning on Tuesday, September 15th, is also a winner. The long-range swell on Thursday, September 17th, is promising but less certain—big, powerful, and only for the skilled.
Stay stoked, and I’ll see you in the water.
Rusty
Short Range ForecastLight rain (total 6mm), mostly falling on Thu night. Warm (max 24°C on Thu afternoon, min 10°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sun night. Warm (max 20°C on Wed morning, min 10°C on Sun night). Winds increasing (calm on Mon morning, fresh winds from the NE by Tue night). | |||||||||||||||||||
Thu 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | ||||||||||||||
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) | ESE 11 | SE 11 | SE 10 | SE 10 | S 8 | S 8 | S 8 | S 8 | S 9 | S 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | NE 6 | SSE 9 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph | ||||||||||||||||||||
311 | 166 | 84 | 50 | 97 | 195 | 163 | 165 | 671 | 482 | 358 | 419 | 402 | 225 | 193 | 229 | 119 | 319 | 493 | 559 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-on | on | cross-on | cross-on | cross-off | cross-off | cross-off | glassy | glassy | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on |
High Tide | 3:25PM0.33m | 10:52PM0.24m | 4:35AM0.33m | 11:40PM0.24m | 5:32AM0.25m | 12:04PM0.58m | 00:22AM0.25m | 12:57PM0.61m | 1:01AM0.25m | 1:49PM0.62m | 1:35AM0.25m | 2:41PM0.59m | 8:55PM0.31m | 3:32PM0.54m | 10:29PM0.38m | |||||
Low Tide | 7:25PM0.05m | 7:14AM0.24m | 8:07PM0.04m | 7:32AM0.22m | 8:50PM0.06m | 3:46AM0.11m | 9:38PM0.11m | 5:03AM0.05m | 10:40PM0.18m | 6:02AM-0.01m | 7:31PM0.30m | 6:49AM-0.05m | 7:37PM0.29m | |||||||
— | — | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | |
6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | |
mm | 1 | 5 | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 17 | 15 | 16 | 14 | 14 | 14 | 13 | 12 | 13 | 11 | 14 | 15 | 14 | 16 | 16 | 16 | 20 | 20 | 18 |
Feels °C | 24 | 16 | 14 | 13 | 12 | 11 | 10 | 10 | 6 | 7 | 8 | 11 | 11 | 8 | 12 | 11 | 11 | 19 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | ESE 11 | NE 8 | NE 8 | ENE 8 | S 8 | S 8 | S 8 | ENE 8 | ENE 8 | ENE 8 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 10 | SSE 10 | S 11 |
311 | 93 | 59 | 43 | 97 | 195 | 163 | 59 | 37 | 21 | 358 | 419 | 402 | 225 | 193 | 146 | 119 | 139 | 102 | 59 | |
Swell 2 Height (m) Direction Period (s) | NE 6 | SE 11 | SE 10 | SE 10 | ENE 8 | ENE 8 | ENE 8 | ESE 10 | — | — | SE 9 | SSE 12 | SSE 12 | SE 12 | S 17 | S 15 | SSE 13 | — | SSE 9 | E 16 |
37 | 166 | 84 | 50 | 44 | 76 | 80 | 10 | — | — | 22 | 57 | 52 | 37 | 6 | 4 | 34 | — | 8 | 5 | |
Swell 3 Height (m) Direction Period (s) | ENE 8 | — | S 8 | S 9 | SE 10 | SE 10 | SE 10 | — | — | — | ENE 8 | ENE 8 | — | — | S 16 | S 15 | S 11 | — | SSE 10 | — |
59 | — | 1 | 7 | 36 | 28 | 17 | — | — | — | 12 | 12 | — | — | 5 | 17 | 9 | — | 9 | — | |
Wind waves Height (m) Direction Period (s) | SW 7 | S 4 | S 5 | S 6 | — | — | — | S 8 | S 9 | S 9 | SE 7 | — | ENE 8 | ENE 5 | NE 6 | NE 6 | NE 7 | ENE 8 | ENE 8 | ENE 8 |
2 | 18 | 16 | 32 | — | — | — | 165 | 671 | 482 | 128 | — | 12 | 108 | 148 | 229 | 342 | 319 | 493 | 559 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 209 | 13 | 240 | 32 | 116 | 210 | 0 | 220 | 337 | 32 | 71 | 84 | 84 | 84 | 239 | 71 | 3 | 239 |
Best forecast wave conditions in Rio Grande Do Sul | ||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Tramandai Surf forecast
The above surf forecast table for Tramandai provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tramandai can be found by selecting the local surf guide option on the grey menu. Our Tramandai 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 (Tramandai) 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 Tramandai 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.
Tramandai is 11 km (7 miles) from Tramandai. If you plan a holiday in Rio Grande Do Sul, look for hotels and other accommodation in Tramandai. Tramandai has rooms for a wide range of budgets as well as car hire and transport links.










