
Surf Forecasts:
Rosa surf forecast from 29 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 9AM (local time) - 2ft (0.6m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 4 Aug, 12PM (local time) - 4.5ft (1.3m), 11s period, S swell with 389 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 9AM (local time) - 2ft (0.6m), 12s period with S 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 Wednesday (Jul 29) at 9AM. The primary swell is predicted to be 0.6m and 12s period with a secondary swell of 0.9m and 6s. 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 1.3m 11s and forecast to arrive on Tuesday (Aug 04) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Jul 29) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 29th Jul) | 2ft (0.6m) 12s |
| Best Surf | 9AM (Wed 29th Jul) | 2ft (0.6m) 12s |
| Most Powerful | 12PM (Tue 4th Aug) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Rosa over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’ve got the lowdown on the local surf scene at Rosa for the next couple of weeks.
The water temperature is sitting right around 65°F, which is exactly average for this time of year—nothing special, just your usual summer warmth.
The first week starts Tuesday the 28th, but honestly, it’s not a great opener. The swell is tiny at 2ft from the south, and while the wind is glassy, the energy is weak (188). You can paddle out, but you’ll be working for any half-decent wave. Wednesday morning the 29th is a turnaround—clean conditions with light offshore wind and a 2ft south swell. The energy is moderate (209), and the waves should be clean, so that’s your best early session.
Thursday morning the 30th is still clean with a small 2ft south swell, but the period drops to 9 seconds, so it’s a bit weak (132). Friday the 31st is a complete mess—strong north-northeast winds and a messy 2ft south swell, just ugly. Saturday the 1st of August is no better, with a 6ft east-northeast short-period swell (7 seconds) and howling cross-shore winds; the energy is moderate (305), but the conditions are poor. Sunday the 2nd is just average, with a 4ft east-northeast windswell, and the wind is cross-off in the morning, but it’s nothing to write home about.
The real standout comes in the second week. Monday the 9th of August morning is looking like the best of the whole outlook. You’ve got a solid 4ft south swell with a very long period of 13 seconds (groundswell), and the energy is strong (796). The wind is light and cross-off, keeping it clean. This is a reef-friendly swell, so Rosa will handle it nicely. The long period means powerful, well-shaped waves with good gaps between sets. Tuesday the 11th of August morning is another gem—6ft south-southeast swell, but with a short period of 8 seconds, so it’s punchy. The wind is dead calm, glassy as a mirror, and the energy is very strong (781). That’s a morning for the experts though, as 6ft is getting big for the less experienced.
After that, Wednesday the 12th afternoon sees a huge jump in energy (1039) with a 6ft south-southwest swell, but the wind is onshore and choppy, so it’s not the kind of session you’d wait for.
So, if you’re picking a day, lock in Monday the 9th of August morning for the best combination of size, quality, and clean conditions. The Tuesday the 11th morning is a close second for the glassy, punchy waves, but it’s a bit more intense. The rest of the time is mostly small, messy, or windy—typical summer fare.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Tue afternoon. Warm (max 21°C on Wed morning, min 15°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun afternoon. Warm (max 28°C on Sat afternoon, min 17°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | ||||||||||||||
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) | S 12 | S 11 | S 12 | S 11 | S 10 | S 9 | S 9 | S 13 | S 12 | S 12 | NE 6 | NE 7 | NE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | S 13 | S 12 |
Wave Graph | ||||||||||||||||||||
97 | 116 | 99 | 146 | 94 | 85 | 83 | 92 | 190 | 132 | 203 | 284 | 317 | 211 | 131 | 131 | 99 | 86 | 128 | 285 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-off | cross | cross-off | cross-off | on | cross-on | cross | cross-on | cross | cross | cross | glassy | cross-off | cross | glassy | cross-on | on | cross |
High Tide | 1:07AM0.59m | 2:32PM0.65m | 1:40AM0.64m | 2:55PM0.65m | 2:13AM0.67m | 3:20PM0.64m | 2:47AM0.69m | 3:47PM0.62m | 3:22AM0.68m | 4:15PM0.59m | 4:00AM0.66m | 4:45PM0.55m | ||||||||
Low Tide | 8:35PM0.29m | 8:26AM-0.01m | 9:03PM0.29m | 9:02AM-0.03m | 9:30PM0.29m | 9:37AM-0.02m | 10:00PM0.29m | 10:14AM0.00m | 10:34PM0.29m | 10:55AM0.05m | 11:15PM0.29m | 11:45AM0.12m | 00:06AM0.30m | |||||||
— | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | |
5:42 | — | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | |
mm | 9 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 20 | 19 | 21 | 21 | 17 | 18 | 19 | 17 | 20 | 22 | 18 | 26 | 28 | 23 | 20 | 19 | 18 | 22 | 22 | 18 |
Feels °C | 22 | 21 | 23 | 20 | 16 | 18 | 19 | 17 | 17 | 19 | 15 | 23 | 27 | 22 | 20 | 19 | 20 | 23 | 23 | 18 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | NE 6 | S 11 | S 10 | S 9 | S 9 | S 9 | S 12 | S 12 | S 11 | S 10 | S 10 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | S 12 |
54 | 61 | 61 | 146 | 94 | 85 | 83 | 73 | 190 | 132 | 82 | 19 | 18 | 211 | 131 | 131 | 99 | 86 | 81 | 285 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 11 | S 12 | NE 7 | S 5 | ENE 7 | ENE 7 | S 13 | SE 5 | — | — | S 9 | S 9 | S 10 | SSW 3 | S 10 | SE 10 | SE 11 | S 13 | ENE 7 |
97 | 116 | 99 | 46 | 22 | 34 | 40 | 92 | 7 | — | — | 2 | 2 | 8 | 1 | 2 | 4 | 33 | 128 | 68 | |
Swell 3 Height (m) Direction Period (s) | ESE 8 | ESE 8 | S 10 | ESE 8 | ENE 7 | S 5 | S 6 | SE 8 | — | — | — | — | — | S 9 | S 10 | SE 10 | S 9 | SSE 14 | ESE 12 | SE 11 |
37 | 24 | 49 | 12 | 29 | 13 | 17 | 10 | — | — | — | — | — | 2 | 8 | 4 | 2 | 41 | 54 | 58 | |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 3 | — | — | — | ENE 7 | NE 4 | NE 5 | NE 6 | NE 7 | NE 7 | SW 3 | SW 3 | — | — | NE 3 | — | — |
— | — | — | 1 | — | — | — | 61 | 41 | 117 | 203 | 284 | 317 | 2 | 2 | — | — | 2 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 3 | 0 | 2 | 0 | 0 | 12 | 4 | 12 | 123 | 105 | 120 | 275 | 0 | 0 | 11 | 0 | 6 | 2 | 12 |
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.










