Rosa Surf Break

Lat Long: 28.13° S 48.64° W

Rosa Surf Forecast and Surf Report

Issued: 2 pm 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Rosa sea temperature is
18.0° C
0.6° 

Rosa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Tue 21st Jul)4.5ft (1.4m) 8s
Best Surf12AM (Sun 26th Jul)3.5ft (1.0m) 13s
Most Powerful12PM (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 Forecast

Heavy 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 Summary

Light 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
Rating
(10 max)
1
2
2
2
2
1
3
3
3
3
3
3
1
4
3
2
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
ENE
8
1.3
ENE
8
1.3
ENE
8
1.6
NE
8
1.3
ENE
9
1.5
S
8
2.3
S
9
2.2
SSE
9
1.9
SE
9
1.9
SE
9
1.7
SE
9
1.7
SE
9
1.6
SE
9
1
S
13
1
S
12
1.5
SE
9
1.3
ESE
9
1.2
ESE
9
1.1
ESE
9
1.6
NNE
6
Wave Graph
Metric surfscale
Energy kJ
257
232
217
322
245
258
904
866
653
626
457
450
362
365
285
351
264
242
203
143
Wind (km/h)
5
ENE
15
SW
0
WSW
15
NNW
15
SW
20
SSW
15
SSW
5
S
0
NNE
5
NE
5
NW
10
SW
20
S
10
WSW
10
WSW
10
SE
10
N
15
NNE
20
NE
20
N
Wind State
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
part cloud
rain showers
mod rain
light rain
part cloud
rain showers
rain showers
rain showers
cloud
cloud
rain showers
clear
rain showers
clear
part cloud
clear
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:01
7:01
7:01
7:00
7:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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