Surf Forecasts:
Rosa surf forecast from 6 Aug 2026:
- Best quality surf: Friday 7 Aug, 9PM (local time) - 10ft (3.0m), 10s period, SSW swell with cross-shore winds.
- Most powerful swell: Saturday 8 Aug, 12AM (local time) - 8ft (2.5m), 14s period, S swell with 2,267 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 3AM (local time) - 3ft (0.9m), 8s period with ENE swell.
Best Forecast Surf Conditions for Rosa this week:
The surf forecast for Rosa over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 07) at 3AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.4m and 11s. Another secondary swell of 0.7m and 4s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Rosa in the next 16 days are 2.5m 14s and forecast to arrive on Saturday (Aug 08) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Aug 09) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Fri 7th Aug) | 3ft (0.9m) 8s |
| Best Surf | 9PM (Fri 7th Aug) | 10ft (3.0m) 10s |
| Most Powerful | 12AM (Sat 8th Aug) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Rosa over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's break down the same stretch, but in feet and knots.
The first few days are a total bust. Thursday the 6th and Friday the 7th at Rosa are tiny, weak, and wind-blown. Nothing to bother with.
The first real action shows up Saturday morning, the 8th of August. The swell is about 7ft from the south, but the wind is cross-shore. The period is a solid 13 seconds, which is a lot of energy for a beach break. The combined energy is 1563, so there's plenty of push, but it's not clean. For the next few days, it stays in the 6ft to 8ft range, mostly from the south, with cross-off winds. Sunday the 9th and Monday the 10th offer some clean-ish waves, but nothing to get too excited about.
The real standout is Wednesday morning, the 12th of August. The swell is 7ft from the SSE, with a 12-second period, and the wind is glassy. Glassy. That's a huge positive. The water temp is about 67°, which is normal for the season. The energy reading is 1371, which is strong, but for an intermediate surfer, that's a proper session. Circle that date.
There's another decent window on Thursday the 13th, with a glassy morning and 5ft swell, but the 12th has the power.
After that, the wind gets ugly. The 17th of August shows a massive 10ft swell from the ENE, but the data says it's too big for this break. That's expert-only, and the wind is going to make it a washing machine. Better suited for kites.
The last real chance for a clean wave is on the afternoon of Friday the 21st of August. The swell drops to 6ft from the south, but the wind goes glassy again. The period is only 8 seconds, so it's a bit weak and short, but if you want a clean, uncrowded wave, that's your shot. The crowd level is "sometimes," so you might get a few out, but with that low energy, it might be quiet.
The best bet is that Wednesday the 12th morning. Glassy, solid south swell, and plenty of power. That's the one.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Warm (max 23°C on Thu morning, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun afternoon. Very mild (max 15°C on Tue afternoon, min 11°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
AM | 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) | ENE 7 | ENE 8 | NE 8 | ENE 8 | S 8 | S 14 | S 13 | S 13 | S 12 | S 8 | S 11 | S 10 | S 12 | S 12 | S 12 | S 11 | SSE 12 | S 11 | SSE 12 | S 12 | S 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 64 | 88 | 113 | 119 | 458 | 2267 | 1484 | 1228 | 869 | 639 | 1190 | 682 | 1022 | 1148 | 1166 | 843 | 432 | 720 | 1360 | 1214 | 827 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | cross-off | cross | glassy | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | glassy | glassy | cross | cross |
High Tide | 11:40AM0.50m | 6:19PM0.37m | 12:31PM0.61m | 6:54PM0.32m | 1:17PM0.70m | 1:12AM0.38m | 2:00PM0.75m | 1:17AM0.39m | 2:42PM0.76m | 00:31AM0.44m | 3:20PM0.73m | 00:37AM0.52m | 3:50PM0.67m | 1:04AM0.60m | |||||||
Low Tide | 3:48PM0.32m | 9:24PM0.30m | 3:42AM0.24m | 5:46PM0.32m | 9:34PM0.29m | 4:54AM0.17m | 7:11PM0.29m | 5:56AM0.09m | 7:43PM0.29m | 6:49AM0.01m | 8:11PM0.30m | 7:35AM-0.05m | 8:37PM0.33m | 8:17AM-0.09m | 9:02PM0.35m | ||||||
 | |  |  | |  |  | | |  |  |  | | | | | |  | |  |  | |
 | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — |
 | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — |
mm | — | — | 1 | — | — | — | 1 | — | — | — | 1 | 1 | — | — | — | — | — | — | 1 | 7 | 9 |
Temp °C | 23 | 22 | 23 | 21 | 17 | 13 | 16 | 19 | 18 | 14 | 14 | 13 | 12 | 13 | 13 | 14 | 15 | 13 | 12 | 12 | 13 |
Feels °C | 24 | 23 | 21 | 18 | 13 | 11 | 13 | 16 | 19 | 10 | 10 | 10 | 8 | 9 | 8 | 11 | 12 | 12 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | SSE 9 | NE 8 | ENE 8 | ENE 8 | S 14 | S 13 | S 13 | S 12 | SSE 12 | S 11 | S 10 | S 12 | ENE 9 | S 12 | S 11 | S 10 | S 11 | SSE 12 | S 12 | S 12 |
| kJ | 59 | 44 | 113 | 119 | 93 | 2267 | 1484 | 1228 | 869 | 404 | 900 | 682 | 1022 | 76 | 1166 | 843 | 354 | 720 | 1360 | 1214 | 827 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 12 | SE 9 | S 10 | — | ENE 8 | ENE 8 | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 13 | ENE 8 | ENE 8 | SSE 12 | NE 8 | ENE 8 | ENE 7 | — |
| kJ | 64 | 30 | 19 | 17 | — | 54 | 75 | — | 112 | 39 | 40 | 39 | 34 | 3 | 48 | 26 | 432 | 16 | 11 | 10 | — |
Swell 3 Height (m) Direction Period (s) | SSE 13 | S 10 | SSE 11 | SE 8 | — | — | — | — | — | E 15 | — | — | E 13 | — | — | ENE 8 | ENE 8 | NE 8 | — | — | — |
| kJ | 18 | 8 | 24 | 11 | — | — | — | — | — | 4 | — | — | 3 | — | — | 26 | 25 | 16 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | ENE 8 | N 5 | S 5 | S 8 | — | NE 3 | NE 8 | SSW 4 | S 8 | S 11 | — | — | S 12 | — | — | — | — | — | ENE 4 | NE 5 |
| kJ | — | 88 | 27 | 17 | 458 | — | 4 | 208 | 13 | 639 | 1190 | — | — | 1148 | — | — | — | — | — | 10 | 60 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 12 | 12 | 11 | 636 | 0 | 41 | 25 | 24 | 2 | 24 | 0 | 2 | 2 | 2 | 0 | 2 | 0 | 0 | 4 | 4 |
Best forecast wave conditions in Santa Catarina - Sul | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Rosa Surf forecast
The above surf forecast table for Rosa provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rosa can be found by selecting the local surf guide option on the grey menu. Our Rosa 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 (Rosa) 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 Rosa 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.
Rosa is 12 km (7 miles) from Imbituba. If you plan a holiday in Santa Catarina - Sul, look for hotels and other accommodation in Imbituba. Imbituba has rooms for a wide range of budgets as well as car hire and transport links.
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