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Siriu Surf Forecast
/ Santa Catarina – Sul (37 surf breaks) /
Surf Forecasts:
Siriu surfForecast / Santa Catarina – Sul / Brazil
16 Day Weather and Surf, issued 2 am Tuesday 31 Mar 2026 -03Forecast 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
25.1° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Siriu this week:
The surf forecast for Siriu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Mar 31) at 6PM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 0.7m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Siriu in the next 16 days are 2.4m 8s and forecast to arrive on Sunday (Apr 05) 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 0.6m 4s period and expected on Sunday (Apr 05) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 31st Mar) | 4.5ft (1.3m) 7s |
| Best Surf | 3AM (Wed 1st Apr) | 6.5ft (2.0m) 10s |
| Most Powerful | 9PM (Sun 5th Apr) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Siriu over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 8mm), mostly falling on Tue morning. Warm (max 29°C on Thu morning, min 20°C on Tue night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Sun afternoon. Warm (max 27°C on Fri morning, min 21°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 31 | Wednesday 01 | Thursday 02 | Friday 03 | Saturday 04 | Sunday 05 | Monday 06 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 6 | 7 | 9 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 13 | 8 | 7 | 8 | 11 | 11 | 11 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 187 | 161 | 391 | 590 | 539 | 360 | 243 | 189 | 190 | 90 | 98 | 146 | 114 | 90 | 86 | 74 | 54 | 402 | 483 | 430 | 251 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | cross- off | cross | cross- on | cross | cross | cross- on | cross- off | glass | cross- on | off | glass | cross- on | off | cross- off | cross | glass | glass | cross- on | cross |
High Tide / height (m) | 12:44PM 0.74 | 1:34AM 0.69 | 1:14PM 0.79 | 1:45AM 0.69 | 1:46PM 0.80 | 2:01AM 0.68 | 2:18PM 0.80 | 2:20AM 0.67 | 2:51PM 0.77 | 2:40AM 0.66 | 3:25PM 0.72 | 3:01AM 0.63 | 4:01PM 0.66 | ||||||||
Low Tide / height (m) | 7:43PM 0.03 | 7:50AM 0.22 | 8:13PM 0.07 | 8:09AM 0.18 | 8:40PM 0.13 | 8:25AM 0.15 | 9:03PM 0.20 | 8:37AM 0.13 | 9:20PM 0.28 | 8:48AM 0.12 | 9:26PM 0.35 | 9:02AM 0.13 | 9:06PM 0.41 | ||||||||
Tuesday 31 | Wednesday 01 | Thursday 02 | Friday 03 | Saturday 04 | Sunday 05 | Monday 06 | |||||||||||||||
| Sunrise | 6:22 | - | - | 6:24 | - | - | 6:24 | - | - | 6:24 | - | - | 6:24 | - | - | 6:26 | - | - | 6:26 | - | - |
| Sunset | - | 6:13 | - | - | 6:12 | - | - | 6:10 | - | - | 6:09 | - | - | 6:08 | - | - | 6:07 | - | - | 6:06 | - |
 |  |  |  | | | | |  | |  |  | | | | |  |  | | |  | |
Rain (mm) | 3 | - | - | - | - | - | - | 2 | 3 | - | - | - | - | - | - | 1 | 3 | 2 | - | - | 2 |
| Temp. °C | 25 | 25 | 22 | 27 | 27 | 23 | 29 | 28 | 24 | 27 | 26 | 24 | 27 | 26 | 23 | 23 | 21 | 21 | 24 | 24 | 23 |
| Feels °C (?) | 26 | 25 | 25 | 26 | 25 | 24 | 30 | 28 | 26 | 28 | 28 | 26 | 28 | 27 | 25 | 22 | 20 | 22 | 24 | 25 | 24 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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.
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 16 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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