
Surf Forecasts:
Rosa surf forecast from 21 Jul 2026:
- Best quality surf: Sunday 26 Jul, 12AM (local time) - 3.5ft (1.0m), 13s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 12PM (local time) - 8ft (2.5m), 9s period, S swell with 1,198 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 6PM (local time) - 4.5ft (1.4m), 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 Tuesday (Jul 21) at 6PM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.5m and 9s. 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 2.5m 9s and forecast to arrive on Thursday (Jul 23) 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 1.2m 5s period and expected on Saturday (Jul 25) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 21st Jul) | 4.5ft (1.4m) 8s |
| Best Surf | 12AM (Sun 26th Jul) | 3.5ft (1.0m) 13s |
| Most Powerful | 12PM (Thu 23rd Jul) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Rosa over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Rosa has in store for us over the next couple of weeks.
We’re starting off with a bit of a slow grind, but there's some real gems hidden in the second half of the forecast. The first few days are a bit of a mixed bag, but don't write it off just yet. The water temp is sitting at 64°, which is just about normal for this time of year, so no need to dig out the extra thick rubber just yet.
The action really starts to pick up on Wednesday the 22nd. It’s a small one, but Wednesday morning at Rosa is looking like a sneaky good session. The wind is absolutely dead, glassy as a mirror, with a tiny 4ft swell from the ENE. It’s not going to be big, but for a quiet paddle and some clean little lines, that’s a winner. The energy is weak (253), so don't expect to get blown out of the water, but it's a proper start.
The first real standout is Thursday the 24th. Friday morning and afternoon are both looking absolutely prime. We’ve got a clean 6ft swell from the SE with a 9-second period, and the wind is glassy or virtually nonexistent. That’s the kind of forecast that gets you out of bed early. The combined energy is moderate (749 and 717), so there’s a bit of push behind it, but it’s not stupidly powerful. This is the pick of the first week for sure.
We hit a bit of a lull over the weekend and into the start of the following week. Saturday the 25th has some decent morning waves, but the wind swings around and puts a chop on it by the afternoon. Sunday the 26th morning has a really interesting little pulse: a 3ft S swell with a 12-second period, and offshore winds (552 energy). That’s a long period groundswell, so it might wall up a bit, but with clean wind, it’ll be worth a look.
Then there’s a bit of a dry spell from Monday the 27th through to Wednesday the 29th. The swell drops off and the wind gets messy. A few days of small, ordinary stuff. But hang tight.
Thursday the 30th afternoon is a bit of a surprise. Out of nowhere, we get a glassy 6ft S swell showing up (544 energy). That’s a nice little pulse to break the quiet spell.
The real standout of the whole forecast window is Friday the 31st. The afternoon session is looking like the best of the bunch. We’ve got a 6ft SSE swell, but the period jumps to 12 seconds, and the energy is strong at 985. The wind is light and cross-offshore. That’s a proper groundswell, with real power and shape. If you’re going to pick one session in the next two weeks, this is it. The morning session on Friday is also decent (6ft, 8-second period, 412 energy), but the afternoon is the top shelf.
After that, we get a bit of a messy end to the forecast. The first few days of August are choppy and blown out with strong onshore winds. Saturday the 1st is a write-off. Sunday the 2nd is clean but the wind direction is cross-shore, creating a bit of a chop. The energy is high (1074 and 997), but the quality is not there.
The very end of the run, on Monday the 3rd and Tuesday the 4th, has some interesting potential. Monday morning is glassy with a 4ft SE swell at 11 seconds (550 energy). That’s a clean, long-period swell, but it’s small. Tuesday the 4th has a 4ft SE swell with a very long 13-second period and a massive 910 energy. That’s got some serious grunt, but the wind is cross-onshore, so it might be a bit bumpy. Keep an eye on that one, it’s promising but less certain this far out.
Stay stoked, and keep your eyes on the horizon.
Rusty
Short Range ForecastHeavy rain (total 21mm), heaviest during Wed morning. Warm (max 24°C on Tue afternoon, min 16°C on Thu afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Fri night. Warm (max 20°C on Mon morning, min 13°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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 8 | ENE 8 | ENE 8 | NE 8 | ENE 9 | S 8 | S 9 | SSE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | S 13 | S 12 | SE 9 | ESE 9 | ESE 9 | ESE 9 | NNE 6 |
Wave Graph | ||||||||||||||||||||
257 | 232 | 217 | 322 | 245 | 258 | 904 | 866 | 653 | 626 | 457 | 450 | 362 | 365 | 285 | 351 | 264 | 242 | 203 | 143 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | glassy | glassy | glassy | cross-off | cross-off | cross | cross-off | off | cross-on | cross | cross | cross-on | cross |
High Tide | 5:36PM0.48m | 00:06AM0.32m | 6:20AM0.48m | 12:23PM0.43m | 6:14PM0.46m | 7:50AM0.43m | 12:58PM0.49m | 7:05PM0.43m | 1:24PM0.54m | 8:37PM0.41m | 1:41PM0.58m | 10:46PM0.43m | 1:51PM0.61m | 11:51PM0.48m | 1:59PM0.63m | 00:32AM0.53m | ||||
Low Tide | 9:43PM0.28m | 9:39AM0.38m | 3:06PM0.38m | 10:32PM0.29m | 3:17AM0.26m | 4:35PM0.40m | 11:47PM0.32m | 4:29AM0.21m | 5:59PM0.38m | 5:32AM0.16m | 6:55PM0.35m | 6:25AM0.11m | 7:34PM0.32m | 7:10AM0.06m | 8:07PM0.30m | |||||
— | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | |
5:38 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:40 | — | — | 5:42 | — | |
mm | — | 6 | 9 | 1 | — | 3 | 1 | 1 | — | — | 6 | — | 1 | — | — | — | — | — | — | — |
Temp °C | 24 | 19 | 19 | 20 | 17 | 17 | 18 | 17 | 18 | 18 | 16 | 19 | 18 | 15 | 18 | 18 | 14 | 20 | 20 | 17 |
Feels °C | 26 | 20 | 22 | 20 | 17 | 15 | 16 | 17 | 19 | 18 | 16 | 18 | 16 | 14 | 18 | 17 | 13 | 18 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | S 8 | ENE 9 | ENE 8 | S 9 | SSE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | S 7 | SE 8 | SE 9 | ESE 9 | ESE 9 | ESE 9 | NE 6 |
257 | 232 | 217 | 31 | 245 | 164 | 904 | 866 | 653 | 626 | 457 | 450 | 362 | 242 | 256 | 351 | 264 | 242 | 203 | 92 | |
Swell 2 Height (m) Direction Period (s) | S 9 | S 9 | S 8 | S 12 | S 8 | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 13 | S 12 | S 12 | S 11 | S 12 | S 12 | ESE 9 |
44 | 55 | 33 | 3 | 29 | — | 101 | 82 | 78 | 75 | 89 | 67 | 47 | 355 | 285 | 169 | 116 | 109 | 102 | 127 | |
Swell 3 Height (m) Direction Period (s) | — | S 15 | S 13 | S 10 | SSE 9 | — | ENE 8 | — | S 10 | S 9 | S 9 | S 13 | S 12 | ESE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | — | S 11 |
— | 4 | 3 | 2 | 8 | — | 113 | — | 18 | 16 | 41 | 128 | 150 | 126 | 11 | 11 | 11 | 5 | — | 64 | |
Wind waves Height (m) Direction Period (s) | — | — | — | NE 8 | SSW 2 | S 8 | — | — | — | — | — | — | SSW 4 | SSW 7 | — | — | N 2 | NNE 4 | NNE 5 | NNE 6 |
— | — | — | 322 | 1 | 258 | — | — | — | — | — | — | 13 | 365 | — | — | 1 | 29 | 87 | 143 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2 | 0 | 0 | 0 | 0 | 2 | 7 | 0 | 0 | 0 | 0 | 0 | 24 | 0 | 0 | 9 | 2 | 2 | 2 | 41 |
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.










