Rosa Surf Break

Lat Long: 28.13° S 48.64° W

Rosa Surf Forecast and Surf Report

Issued: 8 am 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rosa sea temperature is
18.8° C
0.3° 

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


Rosa surf forecast from 14 Aug 2026:

  • Best quality surf: Tuesday 18 Aug, 3PM (local time) - 5.5ft (1.7m), 9s period, ENE swell with glassy winds.
  • Most powerful swell: Friday 14 Aug, 3PM (local time) - 7ft (2.2m), 13s period, SSE swell with 1,605 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 18 Aug, 3PM (local time) - 5.5ft (1.7m), 9s 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 (Aug 18) at 3PM. The primary swell is predicted to be 1.7m and 9s period with a secondary swell of 0.2m and 10s. Another secondary swell of 0.3m and 10s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Rosa in the next 16 days are 2.2m 13s and forecast to arrive on Friday (Aug 14) at 3PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Tue 18th Aug)5.5ft (1.7m) 9s
Best Surf 3PM (Tue 18th Aug)5.5ft (1.7m) 9s
Most Powerful 3PM (Fri 14th Aug)7ft (2.2m) 13s

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. To be straight with you, the first week is a bit of a write-off for clean, quality surfing. We’ve got some size at times, but the wind just won’t play ball, churning things up with a lot of cross and cross-onshore chop. Hold tight, because there’s a standout window later on that looks the goods.

We kick off this Friday the 14th with some swell on the way. Morning sees a 6 ft SSE swell at 13 seconds, with 6 mph east winds. It’s not totally blown out, but with cross-on conditions the surf is messy and hard to read. The swell builds in the arvo to 8 ft from the same direction, but that ENE breeze swings cross-on and it’s choppy. Combined energy is strong at 2646, but the quality is missing.

Saturday the 15th stays messy. Cross-on NE winds keep a 5 ft SSE swell ragged in the morning, and it gets worse into the arvo as the wind picks up to 9 mph, with swell jumping to 7 ft but dropping to a short 8 second period. That’s a junky, powerless wave. Sunday through Tuesday is more of the same – moderate cross-shore winds, bumpy surfaces, and a 7 ft to 8 ft ENE/NE swell with short 8 second periods. Not much to get excited about. The combined energy is moderate to strong (from 597 up to 979) but it’s all for the kites, not surfers.

There is a few slivers of hope in the latter part of next week. On Friday the 21st, we get a brief moment of calm. A small 4 ft ENE swell pushes in with glassy conditions and easterly winds at 3 mph. That’s a clean, if small, morning. Then on Saturday the 22nd, the morning looks promising with a light cross-off breeze from the SW at 6 mph. The swell is still small at 4 ft, but it’ll be clean and rideable for the logs and mid-lengths.

Now, this is the standout. Mark Monday the 24th and Tuesday the 25th in your calendar. We get a new S swell arriving. Monday morning has a 5 ft S swell with a nice 12 second period, and the wind is a light cross-off from the SW at 6 mph. The afternoon cleans up even more with the breeze dropping to 3 mph. The combined energy at 873 is moderate, but with that direction and period, the waves will have proper push and shape. This is for the reefs and points if you’ve got them. Tuesday the 25th is a beaut – glassy conditions with a light NNW breeze and a 3 ft S swell at 11 seconds. Perfect conditions for a dawn session. The water temp is around 66°, which is about average for this time of year.

After that, the surf drops right off. Wednesday the 26th and Thursday the 27th offer small glassy windows, but it’s a tail-off into the second weekend. The swell from the 28th and 29th is tiny and messy. That window of Monday and Tuesday next week is your best bet.

Rusty

Short Range Forecast

Heavy rain (total 47mm), heaviest during Fri night. Warm (max 20°C on Sun morning, min 16°C on Fri morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 31°C on Tue morning, min 18°C on Wed night). Wind will be generally light.

Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
3
1
1
0
1
1
0
0
0
0
2
0
2
2
1
0
2
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
SSE
13
2.2
SSE
13
1.7
S
12
1.4
SSE
12
1.2
S
11
2.3
ENE
8
2
ENE
8
2.1
ENE
8
2.1
ENE
8
2.1
ENE
8
2.2
NE
8
2.3
NE
9
1.8
ENE
9
1.7
ENE
9
1.4
ENE
9
1.3
ENE
8
1.4
ENE
8
1.4
NE
8
1.2
ENE
7
1.2
ENE
7
1.2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
1249
1605
870
541
351
636
439
480
583
601
698
798
486
465
311
223
248
215
147
147
163
Wind (km/h)
10
E
5
ENE
15
ENE
15
NE
15
NE
20
NNE
25
NNE
25
NE
25
NNE
25
NNE
25
NE
20
NNE
20
NNE
5
ENE
5
N
15
NNE
20
NNE
5
NNW
10
NE
15
SSE
5
SE
Wind State
on
on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
cross
glassy
glassy
cross
cross-on
cross-off
cross-on
cross
glassy
High Tide
2:58PM0.55m
2:13AM0.70m
3:07PM0.54m
2:51AM0.70m
3:26PM0.54m
3:30AM0.67m
3:49PM0.55m
4:12AM0.62m
4:15PM0.54m
4:57AM0.55m
12:02PM0.42m
5:50AM0.48m
12:30PM0.49m
00:33AM0.28m
Low Tide
9:35AM-0.04m
9:48PM0.34m
10:10AM0.04m
10:06PM0.32m
10:44AM0.13m
7:53PM0.28m
11:16AM0.24m
8:20PM0.22m
8:42AM0.31m
8:52PM0.20m
8:49AM0.34m
1:09PM0.41m
9:25PM0.21m
8:57AM0.38m
2:56PM0.45m
9:57PM0.24m
light rain
mod rain
heavy rain
light rain
light rain
rain showers
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:47
6:46
6:45
6:43
6:43
6:41
6:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:51
5:52
5:52
5:52
5:52
5:53
5:53
 mm
4
7
27
4
2
3
Temp °C
16
16
17
18
18
18
20
20
19
24
24
19
31
28
20
31
31
24
18
17
16
Feels °C
16
17
16
18
18
17
19
18
17
22
23
19
31
31
22
30
30
24
18
16
16
  • Map Icons:
  • Break
  • 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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