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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 19 May 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
20.7° C
(Which is 1.0°C colder than average for this time of year)How big are the waves at Siriu today?
The current surf forecast for Siriu at 3AM is: 1.6m 13s primary swell from a South-southeast direction and 0.4m 6s secondary swell from a East direction (forecast issued at 08:00pm May 19). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 4.5ft (1.4m) | 13s |
| Afternoon (20 May) | 5ft (1.6m) | 13s |
| Evening (20 May) | 7ft (2.1m) | 14s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 17°C on Wed morning, min 12°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 19 | Wednesday 20 | Thursday 21 | Friday 22 | |||||||||||||||||||||
6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
SSE 15 | SSE 14 | SSE 14 | SSE 13 | S 13 | SSE 13 | S 13 | SSE 13 | SSE 14 | SSE 14 | SSE 15 | S 15 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | |
1902 | 1644 | 1207 | 958 | 787 | 669 | 764 | 943 | 1483 | 1748 | 2618 | 4938 | 3352 | 3093 | 2763 | 2590 | 2267 | 1846 | 2350 | 2290 | 2228 | 2137 | 1937 | 1726 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | cross-off | off | cross-off | cross-off | cross-on | cross-on | cross | cross-off | off | cross-off | off | cross-off | cross | cross | cross-off | cross-off | off | off | off | glassy | cross | glassy | |
High Tide | 4:16PM0.65m | 8:00PM0.64m | 2:35AM0.57m | 5:10PM0.58m | 9:36PM0.65m | 3:05AM0.59m | 10:39PM0.66m | 3:47AM0.59m | ||||||||||||||||
Low Tide | 6:31PM0.63m | 00:01AM0.51m | 11:05AM0.11m | 6:10PM0.57m | 00:59AM0.56m | 12:14PM0.14m | 1:57AM0.57m | 1:26PM0.17m | ||||||||||||||||
 |  | | |  |  | | | | | | | | | | | | | | | |  |  | | |
 | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:52 | — | — | — |
 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:29 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 15 | 14 | 14 | 13 | 15 | 17 | 17 | 15 | 14 | 13 | 12 | 12 | 14 | 16 | 17 | 14 | 13 | 12 | 12 | 12 | 14 | 16 | 16 |
15 | 14 | 13 | 13 | 12 | 14 | 15 | 15 | 13 | 11 | 11 | 9 | 9 | 11 | 12 | 13 | 11 | 10 | 10 | 10 | 10 | 13 | 15 | 16 | |
Swell 1 Height (m) Direction Period (s) | SSE 15 | SSE 14 | SSE 14 | SSE 13 | S 13 | SSE 13 | S 13 | SSE 13 | SSE 14 | SSE 14 | SSE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 14 |
 kJ | 1902 | 1644 | 1207 | 958 | 787 | 669 | 764 | 943 | 1483 | 1748 | 2618 | 3175 | 3352 | 3093 | 2763 | 2590 | 2267 | 1846 | 2350 | 2290 | 2228 | 2137 | 1937 | 1726 |
Swell 2 Height (m) Direction Period (s) | ESE 5 | E 6 | ESE 6 | E 6 | E 6 | E 5 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | — | — | — | — | — | SE 18 | — | — | — | — | — | — |
| kJ | 10 | 15 | 10 | 9 | 9 | 5 | 8 | 9 | 9 | 9 | 4 | — | — | — | — | — | — | 449 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | ENE 7 | — | — | ENE 7 | — | — | E 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 5 | — | — | 5 | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | S 15 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 4938 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 10 | 0 | 0 | 0 | 0 | 0 | 13 | 13 | 10 | 0 | 0 | 6 | 0 | 0 | 13 | 38 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 |
Best forecast wave conditions in Santa Catarina - Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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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