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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 Saturday 16 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
21.3° 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 11s primary swell from a South direction and 0.2m 7s secondary swell from a East direction (forecast issued at 08:00pm May 16). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3ft (0.9m) | 10s |
| Afternoon (17 May) | 2.5ft (0.8m) | 10s |
| Evening (17 May) | 2.5ft (0.7m) | 10s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 25mm), heaviest during Sun night. Warm (max 21°C on Sun morning, min 13°C on Mon afternoon). Winds increasing (calm on Sat night, fresh winds from the SW by Mon morning). | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tuesday 19 | |||||||||||||||||||||
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 11 | SSE 11 | S 11 | S 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | S 10 | S 10 | S 10 | S 10 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 8 | S 8 | S 8 | SSE 17 | SSE 16 | SSE 16 | |
286 | 286 | 229 | 229 | 225 | 177 | 170 | 133 | 125 | 94 | 92 | 223 | 278 | 509 | 263 | 279 | 303 | 572 | 534 | 377 | 287 | 2072 | 2429 | 2511 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | glassy | glassy | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | |
High Tide | 1:35AM0.55m | 2:47PM0.78m | 1:51AM0.53m | 3:30PM0.73m | 2:11AM0.55m | |||||||||||||||||||
Low Tide | 9:10PM0.23m | 8:39AM0.09m | 10:06PM0.33m | 9:18AM0.08m | 11:03PM0.43m | 10:05AM0.09m | ||||||||||||||||||
 |  |  | | |  |  |  |  | | | | |  | | | | | | | | | | | |
 | — | — | — | — | 6:48 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — | — |
 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 |
— | — | — | — | — | — | — | — | 1 | 4 | 3 | 5 | 4 | 2 | 2 | 1 | 1 | 1 | 1 | — | — | — | — | — | |
Temp °C | 19 | 19 | 18 | 18 | 18 | 19 | 21 | 19 | 19 | 18 | 18 | 17 | 16 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 15 | 18 | 17 |
19 | 20 | 19 | 20 | 19 | 20 | 22 | 20 | 19 | 17 | 17 | 15 | 13 | 12 | 9 | 8 | 9 | 9 | 9 | 10 | 10 | 12 | 15 | 15 | |
Swell 1 Height (m) Direction Period (s) | SSE 11 | SSE 11 | S 11 | S 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | S 10 | S 10 | S 10 | SSE 16 | SSE 15 | SSE 7 | SSE 14 | SSE 13 | SSE 13 | S 7 | SSE 7 | S 8 | S 7 | SSE 17 | SSE 16 | SSE 16 |
 kJ | 286 | 286 | 229 | 229 | 225 | 177 | 170 | 133 | 125 | 94 | 92 | 24 | 22 | 293 | 38 | 35 | 33 | 315 | 327 | 217 | 156 | 2072 | 2429 | 2511 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 4 | E 7 | ENE 7 | ESE 5 | ESE 5 | ESE 4 | ENE 5 | ENE 7 | E 7 | E 7 | E 7 | SSE 15 | — | SE 17 | SSE 16 | SSE 12 | SSE 12 | ESE 6 | SSE 14 | ESE 6 | ESE 6 | ESE 6 |
| kJ | 4 | 4 | 1 | 4 | 5 | 2 | 2 | 2 | 3 | 5 | 4 | 4 | 4 | 42 | — | 11 | 25 | 51 | 47 | 51 | 273 | 42 | 29 | 20 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | SE 12 | SE 12 | ENE 7 | ENE 7 | ENE 7 | E 7 | SE 16 | SSE 16 | — | — | — | SE 15 | S 15 | SE 11 | SSE 16 | SSE 15 | SSE 14 | ESE 6 | SE 11 | — | — |
| kJ | 4 | 4 | 4 | 6 | 6 | 5 | 5 | 5 | 1 | 11 | 25 | — | — | — | 9 | 4 | 5 | 25 | 44 | 120 | 45 | 4 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SE 4 | S 4 | S 4 | S 10 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 8 | S 8 | S 8 | S 13 | — | — |
| kJ | — | — | — | — | — | — | — | — | 3 | 6 | 9 | 223 | 278 | 509 | 263 | 279 | 303 | 572 | 534 | 377 | 287 | 1210 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 20 | 6 | 0 | 0 | 0 | 0 | 13 | 13 | 0 | 0 | 0 | 13 | 10 | 10 | 15 | 10 | 10 | 10 | 10 | 0 | 0 | 0 | 10 | 10 |
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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