Surf Forecasts:
Rosa surf forecast from 25 Jul 2026:
- Best quality surf: Friday 31 Jul, 12AM (local time) - 5.5ft (1.7m), 8s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 30 Jul, 3PM (local time) - 6.5ft (2.0m), 8s period, S swell with 454 kJ wave energy.
- Next surfable swell (1★+): Saturday 25 Jul, 3AM (local time) - 4.5ft (1.4m), 8s period with SE 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 Saturday (Jul 25) at 3AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.6m 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 2.0m 8s and forecast to arrive on Thursday (Jul 30) at 3PM. 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 4s period and expected on Thursday (Jul 30) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 25th Jul) | 4.5ft (1.4m) 8s |
| Best Surf | 12AM (Fri 31st Jul) | 5.5ft (1.7m) 8s |
| Most Powerful | 3PM (Thu 30th Jul) | 6.5ft (2.0m) 8s |
Table - best surf conditions forecast for Rosa over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s cookin’ at Rosa.
Right off the bat, we’ve got a bit of a mixed bag, but there are a couple of windows that’ll get the blood pumping. The combined wave energy is moderate to strong, hitting 337 for the first good session, so there’s some push behind it.
The standout session is Saturday morning, July 25th. We’re looking at a 5ft swell out of the SE, with a 8-second period. The wind is glassy, coming from the NW at 3 mph, meaning the surface will be like a mirror. That’s clean, lined-up surf, and the energy is moderate (337). This is your best bet for the whole period – the stars align for a proper session.
Sunday morning, July 26th, the swell drops to 3ft from the S, but the period jumps to 12 seconds. That’s a groundswell, which will bring in some shape. However, the wind is a cross-shore at 9 mph, so it’ll be a bit bumpy. The energy is moderate (423), but the conditions aren’t as pristine.
Tuesday morning, July 28th, a new pulse of 5ft swell from the NNE hits, with a short 6-second period. The wind is a light cross-offshore, keeping it clean. The energy is moderate (293). It’s a notable session, but the swell is a bit short-period so it’ll be a bit less organised.
Monday morning, August 3rd, is a real standout for the second week. We’ve got a 6ft SE swell with an 8-second period, and the wind is dead calm – glassy. The energy is strong (936). This is a serious session, with clean, powerful waves. The water temp is about average for the time of year.
Now, after that, things get a bit tricky. From Tuesday, August 4th, through to Saturday, August 9th, the swell builds a lot. We’re talking 7ft to 10ft ESE swells, with periods up to 11 seconds. The energy is very strong (up to 1895). But the wind is cross-on or cross-shore most of the time, and at 12-16 mph, it’s going to be choppy and messy. For a beach setup, this is more for the kite surfers than paddle surfers. The raw power is there, but the conditions are a real battle.
The last decent call is Sunday morning, August 9th, with a 6ft ENE swell and a cross-offshore wind, but the energy is dropping (749) and it’s the tail end of the run.
So, to wrap it up: Saturday morning, July 25th, is your top pick for clean, fun waves. Keep an eye on Monday morning, August 3rd, for a bigger, glassy session. The middle of the second week is a write-off unless you’ve got a kite.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 22°C on Sun morning, min 15°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Warm (max 23°C on Tue afternoon, min 16°C on Thu morning). Wind will be generally light. | ||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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) | SE 8 | SE 8 | SE 9 | S 13 | S 12 | S 11 | S 11 | S 12 | S 12 | S 11 | NNE 6 | NE 6 | S 11 | NE 7 | NE 7 | ENE 7 | ENE 7 | S 8 | SSW 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 313 | 262 | 309 | 340 | 229 | 125 | 84 | 105 | 93 | 61 | 144 | 80 | 87 | 135 | 88 | 57 | 56 | 454 | 383 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | on | cross | cross | cross-on | cross-off | glassy | cross-on | cross | cross-off | cross | cross | cross-off | glassy | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:41PM0.58m | 10:46PM0.43m | 1:51PM0.61m | 11:51PM0.48m | 1:59PM0.63m | 00:32AM0.53m | 2:13PM0.65m | 1:07AM0.59m | 2:32PM0.65m | 1:40AM0.64m | 2:55PM0.65m | 2:13AM0.67m | |||||||
Low Tide | 5:32AM0.16m | 6:55PM0.35m | 6:25AM0.11m | 7:34PM0.32m | 7:10AM0.06m | 8:07PM0.30m | 7:50AM0.02m | 8:35PM0.29m | 8:26AM-0.01m | 9:03PM0.29m | 9:02AM-0.03m | 9:30PM0.29m | |||||||
 |  | |  | |  | | |  | | | |  | |  | | | | | |
 | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | — | 5:40 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:43 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — |
Temp °C | 16 | 20 | 19 | 16 | 22 | 22 | 18 | 22 | 21 | 19 | 22 | 23 | 19 | 22 | 22 | 19 | 17 | 18 | 16 |
Feels °C | 16 | 20 | 18 | 16 | 20 | 20 | 17 | 23 | 21 | 20 | 23 | 25 | 20 | 24 | 24 | 19 | 15 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | NE 6 | NE 6 | ENE 7 | ENE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 | S 8 |
| kJ | 313 | 262 | 309 | 267 | 165 | 105 | 75 | 73 | 55 | 51 | 77 | 80 | 70 | 81 | 88 | 57 | 56 | 42 | 235 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | ENE 8 | S 12 | S 13 | S 12 | S 11 | NE 5 | S 12 | S 12 | S 11 | ESE 8 | ESE 8 | S 11 | S 10 | S 10 | S 9 | ESE 8 | ESE 8 | ENE 7 |
| kJ | 34 | 33 | 153 | 340 | 229 | 125 | 31 | 105 | 93 | 61 | 35 | 34 | 87 | 76 | 69 | 45 | 6 | 6 | 29 |
Swell 3 Height (m) Direction Period (s) | S 9 | S 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 11 | NE 5 | ENE 7 | SSE 14 | S 11 | S 12 | ESE 8 | ESE 8 | ESE 8 | SSE 11 | — | — | S 13 |
| kJ | 41 | 42 | 33 | 22 | 20 | 11 | 84 | 14 | 5 | 40 | 37 | 69 | 26 | 24 | 20 | 43 | — | — | 14 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNE 4 | NE 5 | NNE 5 | — | NE 5 | NE 5 | NNE 6 | — | — | NE 7 | — | SW 2 | S 4 | S 8 | SSW 8 |
| kJ | — | — | — | — | 9 | 53 | 53 | — | 12 | 40 | 144 | — | — | 135 | — | 1 | 59 | 454 | 383 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 2 | 2 | 4 | 12 | 0 | 0 | 12 | 4 | 0 | 4 | 3 | 0 | 0 | 7 | 11 | 24 | 0 |
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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