Surf Forecasts:
Rosa surf forecast from 9 Jul 2026:
- Best quality surf: Friday 10 Jul, 9PM (local time) - 3.5ft (1.1m), 11s period, ESE swell with cross-offshore winds.
- Most powerful swell: Saturday 11 Jul, 6AM (local time) - 4.5ft (1.4m), 13s period, ESE swell with 700 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 12AM (local time) - 3ft (0.9m), 10s period with SSW 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 Thursday (Jul 09) at 12AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.9m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Rosa in the next 16 days are 1.4m 13s and forecast to arrive on Saturday (Jul 11) 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 1.0m 5s period and expected on Friday (Jul 10) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 9th Jul) | 3ft (0.9m) 10s |
| Best Surf | 9PM (Fri 10th Jul) | 3.5ft (1.1m) 11s |
| Most Powerful | 6AM (Sat 11th Jul) | 4.5ft (1.4m) 13s |
Table - best surf conditions forecast for Rosa over the next 16 days.
Alright folks, Rusty here. Let’s have a look at what’s shaping up for the Rosa stretch.
Right off the bat, the water is a chilly 60° and that’s a whopping 7° colder than normal for this time of year. That’s seriously unusual, so if you’re paddling out, you’ll want a decent wetsuit.
We’ve got a bit of a slow start. The first decent window isn’t until Friday morning, the 10th of July. That morning we’re looking at a clean 3ft swell from the ESE with a long period of 12 seconds, and a light cross-offshore breeze from the SW. The combined energy is moderate (336). It’s a solid, clean start to the weekend.
Now, the real standout is Saturday morning, the 11th of July. This is the pick of the bunch. We’re looking at a nice 5ft groundswell from the ESE, with a lovely 13-second period, and the wind is dead glassy from the ENE. That’s about as clean as it gets. The combined energy is strong (755). This is the morning to be in the water. The afternoon does get a bit of a cross-onshore breeze, so don’t sleep in.
Sunday morning, the 12th of July, is another strong shout. The swell has bumped up a touch to 5ft from the SSE with an 11-second period, and it’s clean with a light cross-offshore breeze from the SW. The wave energy is strong (970). It’s a solid session, though at 5ft it’s getting a bit more serious for the beginners.
Monday the 13th still has some fun, clean 4ft waves from the SSE, but the quality starts to drop off after that. Tuesday the 14th morning has a glassy 3ft swell, but it’s small.
Then we hit a real rough patch. From Tuesday afternoon through the end of the forecast, things get messy. The wind picks up hard from the NE and NNE, often 12-15 mph, and it’s mostly cross-onshore or cross-shore, making for choppy, poor conditions. Even though there’s a big swell on the 21st of July—7ft from the NE with a massive combined energy of 1264—the wind is blowing onshore like crazy, so it’s going to be a washing machine. That’s a pass for surfing, but the kite crew might have a field day.
So, the bottom line: grab Saturday morning, the 11th, for the best clean glassy waves. Sunday morning is a close second. After that, it’s a long stretch of poor conditions all the way through.
Stay warm out there.
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Fri night. Warm (max 21°C on Thu afternoon, min 13°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Mon afternoon. Very mild (max 19°C on Tue morning, min 15°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wed 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | S 11 | SSW 10 | ESE 10 | ESE 10 | ESE 10 | ESE 12 | ESE 12 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 8 | SE 8 | SSE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 291 | 163 | 149 | 114 | 146 | 314 | 436 | 421 | 690 | 560 | 408 | 575 | 597 | 370 | 333 | 263 | 197 | 172 | 67 | 123 | 82 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross | off | glassy | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross-on | cross | cross |
High Tide | 11:51PM0.44m | 12:03PM0.53m | 00:34AM0.43m | 1:01PM0.62m | 1:06AM0.40m | 1:54PM0.70m | 1:09AM0.38m | 2:46PM0.74m | 00:29AM0.40m | 3:38PM0.74m | 00:41AM0.45m | 4:35PM0.70m | 1:08AM0.52m | ||||||||
Low Tide | 3:43PM0.22m | 4:08AM0.25m | 5:08PM0.24m | 5:09AM0.20m | 6:32PM0.25m | 6:06AM0.13m | 7:41PM0.25m | 6:59AM0.06m | 8:33PM0.28m | 7:47AM-0.00m | 9:13PM0.32m | 8:34AM-0.04m | 9:46PM0.37m | 9:19AM-0.06m | |||||||
 |  | |  |  |  | |  | |  |  | |  | | | | | | | | | |
 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 |
 | 5:31 | — | — | 5:32 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | 5:36 |
mm | — | — | — | — | — | — | — | 4 | — | 1 | 3 | — | 1 | 4 | — | 4 | 1 | — | — | — | — |
Temp °C | 16 | 14 | 20 | 21 | 15 | 18 | 18 | 15 | 16 | 17 | 16 | 18 | 18 | 17 | 17 | 16 | 15 | 19 | 21 | 16 | 21 |
Feels °C | 13 | 12 | 16 | 18 | 13 | 16 | 16 | 14 | 16 | 17 | 16 | 19 | 18 | 18 | 16 | 15 | 15 | 18 | 18 | 14 | 20 |
Swell 1 Height (m) Direction Period (s) | S 11 | SSW 10 | ESE 10 | ESE 10 | ESE 10 | ESE 12 | ESE 12 | ESE 14 | ESE 13 | ESE 13 | SSE 9 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 8 | SE 8 | SE 7 |
| kJ | 291 | 163 | 149 | 114 | 146 | 314 | 436 | 421 | 690 | 560 | 289 | 575 | 597 | 370 | 333 | 263 | 197 | 172 | 67 | 123 | 56 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | SSW 9 | S 8 | NNE 5 | NE 5 | NE 5 | ESE 11 | S 6 | SSE 7 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 6 | E 6 | E 6 | E 6 | SE 9 | E 8 | E 9 |
| kJ | 125 | 149 | 84 | 51 | 32 | 12 | 6 | 222 | 51 | 140 | 408 | 325 | 190 | 125 | 64 | 47 | 50 | 38 | 62 | 57 | 71 |
Swell 3 Height (m) Direction Period (s) | — | S 16 | S 15 | S 14 | S 8 | SSW 7 | S 14 | S 6 | S 13 | — | SSE 11 | SSE 19 | SSE 18 | SSE 16 | ESE 11 | SE 11 | SE 11 | S 12 | E 6 | S 10 | SSE 11 |
| kJ | — | 5 | 4 | 4 | 33 | 10 | 4 | 53 | 14 | — | 71 | 70 | 60 | 48 | 82 | 59 | 30 | 25 | 30 | 19 | 82 |
Wind waves Height (m) Direction Period (s) | — | — | NNE 3 | NNE 4 | N 5 | — | S 3 | — | — | — | — | — | — | SE 7 | — | — | — | — | NE 3 | NNE 4 | NNE 4 |
| kJ | — | — | 1 | 21 | 87 | — | 5 | — | — | — | — | — | — | 183 | — | — | — | — | 2 | 8 | 13 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 2 | 12 | 0 | 0 | 7 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 2 | 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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