Surf Forecasts:
Rosa surf forecast from 12 Jul 2026:
- Best quality surf: Sunday 12 Jul, 3AM (local time) - 3.5ft (1.1m), 12s period, ESE swell with offshore winds.
- Most powerful swell: Tuesday 14 Jul, 3PM (local time) - 7ft (2.2m), 10s period, SE swell with 1,012 kJ wave energy.
- Next surfable swell (1★+): Sunday 12 Jul, 3AM (local time) - 3.5ft (1.1m), 12s period with ESE 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 Sunday (Jul 12) at 3AM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 1.0m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Rosa in the next 16 days are 2.2m 10s and forecast to arrive on Tuesday (Jul 14) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Sunday (Jul 12) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 12th Jul) | 3.5ft (1.1m) 12s |
| Best Surf | 3AM (Sun 12th Jul) | 3.5ft (1.1m) 12s |
| Most Powerful | 3PM (Tue 14th Jul) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Rosa over the next 16 days.
Alright, Rusty here, checkin' in with the outlook for the next couple of weeks. We got a bit of a mixed bag, but there's definitely some windows to get wet.
The first part of the week is looking pretty good. We kick off Sunday morning with a clean 4ft S swell, 11-second period, and a light cross-off breeze. The wave energy is solid (679). That's a sweet combo for an intermediate spot like Rosa. Water temp is about average for this time of year, so nothing freaky there.
Monday morning keeps the clean vibes going with a 6ft S swell, 8 seconds, and gentle cross-off wind. A bit more size, but the period is shorter, so it'll be a bit more chop on the face. Still, very surfable.
Tuesday morning, 14th of July, is the standout of the first week. We’re looking at a glassy 6ft SE swell, 10-second period, and the energy is roaring at 868. When the wind is flat like that, the ocean is a mirror. That’s your session to point the board at.
Then things get a bit rough from Tuesday afternoon through to the end of the second week. The wind swings onshore or cross-shore and picks up, making it choppy and lumpy. The swell hangs around, but the quality goes out the window. The wave energy drops off, too. It's a long stretch of pretty average conditions.
There's a break in the gloom on the 23rd of July – Thursday morning. We get a glassy 4ft ENE swell. It's small, but that glassy surface is clean as a whistle. That’s a sneaky good one.
Then the 24th of July, Friday morning, is more of the same – flat calm glassy conditions with a 4ft ENE swell. Perfect for a quiet, clean session.
The 25th of July, Saturday morning, is a bit of a wildcard. A 6ft S swell with a 12-second period rolls in, and the energy is pumping (1036). It’s a cross-shore wind, so it’s not perfect, but the size and period are there. It’s a long-range call, so don't hold your breath, but keep an eye on it.
The very last day, 27th of July, Monday morning, we get a clean 5ft S swell with a gentle cross-off breeze. Not a monster, but a nice, clean way to finish the two weeks.
So, for the best of the best: Tuesday 14th of July morning is your absolute peak – glassy, clean, and a solid 6ft SE swell. That’s the one to circle on the calendar. After that, the 23rd and 24th of July mornings are your sneaky clean, small-wave sessions.
Stay salty, and I'll see you out there.
Rusty
Short Range ForecastSome drizzle, heaviest during Sun morning. Very mild (max 18°C on Sun morning, min 12°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 13°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ESE 13 | S 11 | S 7 | S 8 | S 8 | S 9 | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 11 | ESE 11 | NE 7 | NE 8 | NE 8 | NE 8 | NE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 469 | 326 | 428 | 527 | 441 | 286 | 546 | 624 | 1012 | 791 | 520 | 410 | 358 | 401 | 331 | 331 | 403 | 435 | 669 | 470 | 343 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on |
High Tide | 1:09AM0.38m | 2:46PM0.74m | 00:29AM0.40m | 3:38PM0.74m | 00:41AM0.45m | 4:35PM0.70m | 1:08AM0.52m | 5:42PM0.64m | 1:42AM0.59m | 4:00PM0.54m | 7:06PM0.56m | 3:53PM0.50m | 8:29PM0.48m | 3:01AM0.66m | 4:10PM0.48m | ||||||
Low Tide | 6:59AM0.06m | 8:33PM0.28m | 7:47AM-0.00m | 9:13PM0.32m | 8:34AM-0.04m | 9:46PM0.37m | 9:19AM-0.06m | 10:15PM0.41m | 10:02AM-0.05m | 5:02PM0.54m | 10:42PM0.43m | 10:44AM0.00m | 6:18PM0.45m | 11:25AM0.07m | |||||||
 |  |  | |  | | | | |  | | | | | | | | | | | | |
 | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — |
 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 18 | 16 | 14 | 15 | 16 | 14 | 18 | 18 | 15 | 18 | 19 | 14 | 21 | 22 | 17 | 23 | 22 | 19 | 27 | 27 |
Feels °C | 17 | 14 | 11 | 11 | 11 | 12 | 12 | 16 | 15 | 13 | 14 | 15 | 11 | 17 | 18 | 14 | 22 | 22 | 17 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | ESE 13 | S 11 | ESE 12 | ESE 12 | S 8 | SE 11 | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | NE 8 | ENE 8 | ESE 10 |
| kJ | 469 | 326 | 304 | 180 | 305 | 268 | 546 | 624 | 1012 | 791 | 520 | 410 | 358 | 401 | 331 | 285 | 214 | 170 | 445 | 334 | 56 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | ESE 12 | SSE 11 | SSE 16 | ESE 11 | S 14 | S 13 | ESE 12 | S 11 | ESE 12 | S 10 | S 10 | S 9 | S 12 | SE 11 | SSE 10 | S 18 | S 16 | ESE 10 | ESE 10 | S 13 |
| kJ | 134 | 320 | 71 | 50 | 160 | 32 | 29 | 218 | 23 | 162 | 8 | 7 | 2 | 3 | 18 | 11 | 6 | 5 | 86 | 58 | 13 |
Swell 3 Height (m) Direction Period (s) | NE 4 | ESE 6 | SSE 18 | S 12 | SSE 11 | S 13 | — | S 12 | — | S 10 | — | S 13 | S 13 | S 12 | S 12 | S 13 | S 12 | S 12 | S 11 | S 10 | S 10 |
| kJ | 2 | 33 | 61 | 3 | 49 | 56 | — | 26 | — | 9 | — | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 9 | 8 | 8 |
Wind waves Height (m) Direction Period (s) | — | SSW 5 | S 7 | S 8 | S 8 | S 9 | SSW 6 | — | NE 8 | NE 4 | NE 5 | NE 5 | NNE 6 | NE 6 | NE 6 | NE 7 | NE 8 | NE 8 | NE 8 | NE 8 | ENE 8 |
| kJ | — | 52 | 428 | 527 | 441 | 286 | 41 | — | 2 | 43 | 49 | 124 | 101 | 126 | 231 | 331 | 403 | 435 | 669 | 470 | 343 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 80 | 2 | 0 | 24 | 0 | 0 | 2 | 23 | 59 | 115 | 63 | 63 | 284 | 63 | 63 | 2 | 47 | 23 | 2 |
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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