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Surf Forecasts:

Siriu surfForecast / Santa Catarina – Sul / Brazil

information circle12 Day Weather and Surf, issued 2 pm Monday 24 Nov 2025 -03
Forecast update in hr  min  s Forecast update imminent
Siriu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Siriu sea temperature is
20.3° C
 (Which is 2.4°C colder than average for this time of year)

Best Forecast Surf Conditions for Siriu this week:

The surf forecast for Siriu over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Nov 24) at 9PM. The primary swell is predicted to be 1.4m and 7s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Siriu in the next 12 days are 2.4m 8s and forecast to arrive on Monday (Dec 01) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Monday (Dec 01) at 6AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 24th Nov)4.5ft (1.4m) 7s
Best Surf 9PM (Mon 24th Nov)4.5ft (1.4m) 7s
Most Powerful 9PM (Mon 1st Dec)8ft (2.4m) 8s

Table - best surf conditions forecast for Siriu over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Some drizzle, heaviest during Wed night. Warm (max 22°C on Tue morning, min 17°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 28°C on Sat morning, min 17°C on Thu night). Wind will be generally light.

Mon
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
2
1
0
2
1
1
0
0
0
1
0
0
0
1
0
1
0
0
0
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.5
ESE
1.3
ESE
1.4
ESE
1.4
E
1.3
ESE
1.3
E
1.4
E
1.6
E
1.4
E
1.3
E
1.3
E
1.3
E
1
E
1.2
E
1.2
E
0.9
ESE
1.2
E
1.3
ENE
0.9
ESE
0.7
ESE
1.2
S
Period(s) (?)777778888888999997888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)19816119121519120127733425121922423415120922413222016610472187
Wind
(km/h)
10
ESE
5
SW
10
SSW
10
SE
5
SSE
5
SSE
10
SE
15
ENE
15
NNE
25
NE
20
N
20
NNE
25
NE
20
N
15
NNE
20
NE
10
N
20
NNE
15
ENE
5
NNE
5
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
off		crosscross-
on		glasscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscross-
on		crosscrosscross-
on		crosscross-
on		cross-
on		crossglass
High Tide
/ height (m)
3:19PM
0.62
4:50AM
0.63
4:05PM
0.60
5:56AM
0.59
4:58PM
0.56
10:01AM
0.60
6:08PM
0.53
10:47AM
0.65
7:53PM
0.52
11:25AM
0.68
10:19PM
0.57
11:58AM
0.68
11:27PM
0.64
Low Tide
/ height (m)
10:48PM
0.14
12:12PM
0.44
12:06AM
0.16
1:26PM
0.44
1:23AM
0.17
2:37PM
0.41
2:35AM
0.15
3:42PM
0.37
3:42AM
0.13
4:37PM
0.32
4:46AM
0.11
5:26PM
0.26
5:48AM
0.11
Mon
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Sunrise--5:09--5:09--5:09--5:09--5:09--5:09--5:09
Sunset6:51--6:52--6:52--6:52--6:53--6:54--6:55--
cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
rain showers
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
thunderstorm
heavy rain
light rain
Rain (mm)
-------1----------3141
Temp. °C191922212021222022221825252028262228262121
Feels °C (?)182022212121212019191622231927262426272224
  • 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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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Siriu surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Siriu at:
surf-forecast.com

Information about the Siriu Surf forecast

The above surf forecast table for Siriu provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Siriu can be found by selecting the local surf guide option on the grey menu. Our Siriu 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 (Siriu) 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 Siriu 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.

Siriu is 27 km (17 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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