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Siriu Surf Forecast
/ Santa Catarina – Sul (37 surf breaks) /
Surf Forecasts:
Siriu surfForecast / Santa Catarina – Sul / Brazil
48hr Weather and Surf, issued 2 pm Saturday 21 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
26.8° C
(Which is 1.5°C warmer than normal for this time of year)How big are the waves at Siriu today?
The current surf forecast for Siriu at 11PM is: 0.8m 9s primary swell from a East-southeast direction and 0.2m 7s secondary swell from a South direction, 0.7m 4s secondary swell from a Northeast direction (forecast issued at 02:00pm March 21). The wind direction is predicted to be cross-shore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | - | - |
| Afternoon (21 Mar) | 2.5ft (0.8m) | 9s |
| Evening (21 Mar) | 2.5ft (0.8m) | 9s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 5 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 145 | 103 | 103 | 101 | 99 | 96 | 94 | 94 | 84 | 105 | 105 | 107 | 105 | 103 | 98 | 98 | 96 | 94 | 71 | 71 | 70 | 62 | 55 | 45 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | on | cross- on | glass | cross- on | cross- on | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross |
High Tide / height (m) | 3:14PM 0.79 | 3:17AM 0.59 | 3:53PM 0.72 | 3:32AM 0.55 | 4:37PM 0.64 | 10:26PM 0.53 | 3:40AM 0.52 | |||||||||||||||||
Low Tide / height (m) | 9:36AM 0.21 | 10:40PM 0.24 | 9:37AM 0.21 | 11:41PM 0.37 | 8:35AM 0.20 | 8:10PM 0.50 | 1:19AM 0.48 | 8:40AM 0.19 | ||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - | - | 6:18 |
| Sunset | - | - | 6:23 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - |
 | | |  | | |  |  | | |  | |  | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | 2 | 4 | 1 | - | - |
| Temp. °C | 29 | 28 | 26 | 24 | 24 | 24 | 24 | 26 | 29 | 27 | 26 | 25 | 24 | 24 | 24 | 25 | 28 | 28 | 25 | 24 | 23 | 23 | 23 | 25 |
| Feels °C (?) | 30 | 28 | 27 | 25 | 25 | 25 | 24 | 28 | 32 | 30 | 31 | 29 | 27 | 27 | 26 | 26 | 28 | 27 | 24 | 24 | 24 | 24 | 23 | 27 |
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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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