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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 8 pm Tuesday 02 Dec 2025 -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
20.4° C
(Which is 2.8°C colder than average for this time of year)How big are the waves at Siriu today?
The current surf forecast for Siriu at 1AM is: 0.8m 10s primary swell from a South-southeast direction and 0.6m 11s secondary swell from a South direction (forecast issued at 08:00pm December 02). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Dec) | 3ft (0.9m) | 10s |
| Afternoon (03 Dec) | 2.5ft (0.7m) | 10s |
| Evening (03 Dec) | 4ft (1.2m) | 6s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tue 02 | Wednesday 03 | Thursday 04 | Friday 05 | |||||||||||||||||||||
| 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 | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 6 | 6 | 7 | 7 | 7 | 8 | 7 | 8 | 7 | 7 | 7 | 7 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 176 | 91 | 86 | 191 | 177 | 164 | 125 | 94 | 67 | 105 | 163 | 143 | 117 | 76 | 69 | 105 | 110 | 107 | 96 | 93 | 86 | 107 | 93 | 92 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- off | off | cross | cross | cross | cross- off | cross- off | cross- off | off | off | cross- off | cross- on | cross- on | cross- on | glass | cross- on | cross | cross- off | cross- on | cross- on | cross- on |
High Tide / height (m) | 1:05AM 0.77 | 12:52PM 0.55 | 1:49AM 0.79 | 1:02PM 0.53 | 2:31AM 0.79 | 1:17PM 0.53 | ||||||||||||||||||
Low Tide / height (m) | 6:49PM 0.15 | 7:44AM 0.18 | 7:27PM 0.10 | 8:39AM 0.25 | 8:05PM 0.06 | 9:30AM 0.33 | ||||||||||||||||||
Tue 02 | Wednesday 03 | Thursday 04 | Friday 05 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - |
| Sunset | 6:57 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:59 | - | - | - | - | - | - | - |
 |  |  | |  | | | |  | | | | | | | | | | | | | | | | |
Rain (mm) | 1 | - | - | - | - | - | - | - | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 21 | 21 | 20 | 19 | 23 | 23 | 22 | 21 | 19 | 18 | 18 | 18 | 22 | 23 | 23 | 21 | 21 | 20 | 20 | 19 | 22 | 25 | 24 |
| Feels °C (?) | 24 | 23 | 22 | 21 | 20 | 23 | 21 | 20 | 20 | 18 | 17 | 18 | 17 | 21 | 22 | 23 | 22 | 23 | 20 | 21 | 19 | 21 | 23 | 22 |
- 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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