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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 Monday 20 Apr 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
23.1° C
(Which is slightly cooler than normal)How big are the waves at Siriu today?
The current surf forecast for Siriu at 3AM is: 1.0m 10s primary swell from a Southeast direction (forecast issued at 08:00pm April 20). An open ocean swell of 0.5m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | 2.5ft (0.8m) | 10s |
| Afternoon (21 Apr) | 2.5ft (0.8m) | 10s |
| Evening (21 Apr) | 2.5ft (0.8m) | 10s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| 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) (?) | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 166 | 157 | 208 | 196 | 144 | 141 | 170 | 141 | 141 | 117 | 139 | 113 | 108 | 103 | 83 | 67 | 53 | 53 | 51 | 50 | 49 | 45 | 25 | 42 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | cross- off | cross- off | cross | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross- off | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross- off | cross | cross- on | cross- on |
High Tide / height (m) | 3:56PM 0.68 | 2:51AM 0.54 | 4:45PM 0.60 | 10:08PM 0.63 | 2:59AM 0.55 | 10:56AM 0.21 | 6:01PM 0.51 | 11:07PM 0.68 | 11:07AM 0.26 | |||||||||||||||
Low Tide / height (m) | 12:03AM 0.47 | 8:22AM 0.15 | 7:05PM 0.55 | 1:36AM 0.54 | 8:33AM 0.18 | 12:12PM 0.20 | 6:37PM 0.51 | 8:58AM 0.24 | 1:56PM 0.21 | |||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - | - |
| Sunset | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:49 |
 | | | |  |  | | |  | | | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 20 | 19 | 19 | 19 | 22 | 25 | 26 | 23 | 21 | 21 | 20 | 20 | 23 | 26 | 26 | 23 | 21 | 21 | 21 | 20 | 22 | 25 | 25 |
| Feels °C (?) | 22 | 22 | 20 | 20 | 19 | 22 | 24 | 24 | 22 | 21 | 21 | 20 | 20 | 23 | 25 | 23 | 22 | 21 | 21 | 21 | 21 | 23 | 25 | 24 |
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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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