Surf Forecasts:
Rosa surf forecast from 23 Jul 2026:
- Best quality surf: Thursday 23 Jul, 9PM (local time) - 4.5ft (1.4m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Friday 24 Jul, 9AM (local time) - 6ft (1.9m), 9s period, SE swell with 599 kJ wave energy.
- Next surfable swell (1★+): Thursday 23 Jul, 9PM (local time) - 4.5ft (1.4m), 9s period with SSE 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 23) at 9PM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 1.2m and 8s. 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 1.9m 9s and forecast to arrive on Friday (Jul 24) at 9AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 23rd Jul) | 4.5ft (1.4m) 9s |
| Best Surf | 9PM (Thu 23rd Jul) | 4.5ft (1.4m) 9s |
| Most Powerful | 9AM (Fri 24th Jul) | 6ft (1.9m) 9s |
Table - best surf conditions forecast for Rosa over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about what we've got cooking at Rosa.
This stretch kicks off Thursday the 23rd of July with a bit of a slow start. The swell is there, about 6.2ft from the S, but a moderate cross-off breeze is keeping it from being truly clean. The energy reading is 576, so there's plenty of push, but it’s a bit of a messy one. Not the call to be scrambling for.
The real standout hits on Friday morning, the 24th. We’re looking at 6.2ft of SE swell with a period of 9 seconds and the wind is glass. Absolutely no wind. That’s the magic window. The water temp is sitting at 65.3°, which is pretty much bang on average for this time of year. This is your session. Clean conditions, good wave height, and the swell direction is spot on for Rosa’s exposure. Get out there.
Friday afternoon the wind swings onshore and it gets a bit lumpy. Still surfable, but you missed the best of it.
The rest of the month and into early August is a bit of a write-off for quality. Saturday the 25th sees the swell dropping, and the wind is never quite right. We get a couple of glassy mornings on the 29th of July and the 2nd of August, but the swell is small—around 2.3ft to 2.6ft. It’ll be clean, but you’ll be scratching for waves. The 12-second period stuff from the south in late July is better energy, but it’s just too small to get excited about.
Around the 3rd of August, there’s a pulse of new swell, up to 5.2ft to 5.9ft from the SSE, but the wind is never fully on our side. It’s a constant cross or cross-on breeze, keeping things bumpy. The real size shows up on the 5th and 6th of August, with swell hitting 7.5ft to 8.2ft from the E. The wave energy is massive—1394 on Wednesday the 5th and 1544 on Thursday the 6th. But the wind is cross-shore with chop, and that size at a beach break with a period of only 8 seconds will be a messy, powerful closeout. That’s expert-only territory, and only if you’re feeling frothy. Not the clean, lined-up waves you’d want for a true standout.
So, to sum it up: Friday morning, the 24th of July, is the one to circle. Everything else is either too small, too windy, or just too raw.
Short Range ForecastMostly dry. Warm (max 21°C on Sun morning, min 15°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 18mm), heaviest on Mon night. Warm (max 23°C on Wed morning, min 18°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
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 8 | SSE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | S 13 | S 12 | S 12 | S 11 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 10 | ENE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 477 | 468 | 599 | 515 | 376 | 342 | 323 | 340 | 181 | 129 | 88 | 107 | 97 | 66 | 69 | 63 | 114 | 110 | 98 | 63 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-on | cross-off | cross | cross-on | cross | cross | cross-on | cross-off | glassy | cross-on | cross-on | cross-on | glassy | cross | cross-off | glassy | cross-off |
High Tide | 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 | 2:13PM0.65m | 1:07AM0.59m | 2:32PM0.65m | 1:40AM0.64m | |||||||
Low Tide | 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 | 7:50AM0.02m | 8:35PM0.29m | 8:26AM-0.01m | 9:03PM0.29m | ||||||
 |  | | | | | |  |  |  |  | | | | | | |  | |  | |
 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — |
 | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — |
mm | — | — | — | — | — | — | — | — | — | 2 | 2 | — | 1 | 5 | 1 | 1 | 4 | 2 | 1 | — |
Temp °C | 18 | 15 | 18 | 18 | 16 | 19 | 19 | 16 | 21 | 21 | 18 | 21 | 21 | 19 | 19 | 21 | 20 | 23 | 24 | 18 |
Feels °C | 15 | 14 | 18 | 17 | 16 | 18 | 17 | 15 | 20 | 22 | 19 | 22 | 21 | 20 | 20 | 24 | 21 | 23 | 26 | 17 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | SSE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ENE 5 | ENE 6 | ENE 6 | S 11 | ENE 6 | ENE 7 |
| kJ | 99 | 468 | 599 | 515 | 376 | 342 | 323 | 273 | 147 | 111 | 88 | 59 | 61 | 61 | 34 | 37 | 38 | 110 | 44 | 54 |
Swell 2 Height (m) Direction Period (s) | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 12 | S 13 | S 12 | S 12 | NE 5 | S 12 | S 12 | S 12 | ESE 8 | ESE 8 | S 11 | ENE 6 | S 10 | S 9 |
| kJ | — | 78 | 53 | 48 | 34 | 33 | 153 | 340 | 181 | 129 | 19 | 107 | 97 | 66 | 59 | 38 | 114 | 37 | 98 | 63 |
Swell 3 Height (m) Direction Period (s) | — | ENE 8 | S 10 | S 10 | S 9 | S 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 11 | NE 5 | ENE 7 | ENE 7 | S 12 | S 11 | ESE 8 | ESE 9 | ESE 9 | ESE 8 |
| kJ | — | 78 | 18 | 32 | 40 | 42 | 35 | 32 | 19 | 19 | 84 | 8 | 10 | 9 | 69 | 63 | 39 | 30 | 30 | 28 |
Wind waves Height (m) Direction Period (s) | S 8 | — | — | — | — | — | NE 2 | NE 8 | NNE 4 | NNE 5 | NNE 5 | — | NE 5 | NE 7 | NE 5 | NE 6 | — | — | NE 6 | — |
| kJ | 477 | — | — | — | — | — | 1 | 67 | 20 | 29 | 37 | — | 6 | 23 | 47 | 47 | — | — | 58 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2 | 0 | 0 | 2 | 0 | 2 | 2 | 12 | 25 | 2 | 0 | 0 | 12 | 4 | 12 | 0 | 4 | 25 | 0 | 7 |
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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