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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 Friday 15 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
21.5° C
(Which is normal for this time of year)How big are the waves at Siriu today?
The current surf forecast for Siriu at 4AM is: 1.1m 11s primary swell from a South direction and 0.2m 8s secondary swell from a East direction (forecast issued at 08:00pm May 15). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 May) | 4ft (1.2m) | 11s |
| Afternoon (16 May) | 3.5ft (1.1m) | 11s |
| Evening (16 May) | 3.5ft (1.0m) | 11s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 24mm), heaviest during Mon morning. Warm (max 22°C on Sun morning, min 16°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Monday 18 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
S 11 | S 10 | S 11 | S 11 | S 11 | SSE 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | SSE 10 | SSE 10 | SSE 10 | S 10 | S 10 | S 10 | S 10 | S 8 | S 8 | S 8 | S 7 | SE 7 | |
319 | 270 | 275 | 286 | 281 | 337 | 275 | 275 | 275 | 229 | 229 | 229 | 184 | 177 | 136 | 127 | 96 | 94 | 68 | 371 | 466 | 399 | 261 | 65 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | cross-off | cross-off | glassy | glassy | cross-on | cross-on | cross-on | cross | cross | cross-off | glassy | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 1:21AM0.59m | 2:04PM0.80m | 1:35AM0.55m | 2:47PM0.78m | 1:51AM0.53m | |||||||||||||||||||
Low Tide | 8:15PM0.15m | 8:02AM0.11m | 9:10PM0.23m | 8:39AM0.09m | 10:06PM0.33m | 9:18AM0.08m | ||||||||||||||||||
 | |  |  | |  | | | | | | | |  |  | |  | | | | |  |  | | |
 | — | — | — | — | 6:48 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — | — | — | 6:50 | — | — | — |
 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 |
2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 2 | 8 | 5 | 3 | |
Temp °C | 16 | 16 | 17 | 16 | 16 | 17 | 20 | 20 | 19 | 19 | 19 | 18 | 18 | 19 | 22 | 20 | 19 | 18 | 18 | 17 | 16 | 16 | 16 | 16 |
16 | 17 | 17 | 16 | 16 | 18 | 20 | 20 | 19 | 20 | 20 | 19 | 19 | 20 | 22 | 19 | 17 | 17 | 16 | 14 | 14 | 14 | 14 | 15 | |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | S 11 | S 11 | S 11 | SSE 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | SSE 10 | SSE 10 | SSE 10 | S 10 | S 10 | S 10 | S 10 | NE 6 | SSE 8 | SSE 7 | SE 8 | SE 7 |
 kJ | 319 | 270 | 275 | 286 | 281 | 337 | 275 | 275 | 275 | 229 | 229 | 229 | 184 | 177 | 136 | 127 | 96 | 94 | 68 | 10 | 345 | 259 | 96 | 65 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 4 | E 8 | E 4 | E 8 | E 8 | E 8 | ENE 4 | ENE 4 | ENE 4 | ENE 5 | ENE 5 | E 5 | ENE 5 | ENE 6 | ENE 6 | E 6 | NE 6 | SSE 15 | S 7 | S 6 |
| kJ | 5 | 5 | 5 | 5 | 1 | 5 | 3 | 4 | 4 | 4 | 6 | 6 | 7 | 7 | 8 | 12 | 9 | 10 | 10 | 6 | 11 | 42 | 74 | 31 |
Swell 3 Height (m) Direction Period (s) | SE 14 | SE 13 | SE 13 | SE 13 | E 8 | ENE 8 | E 8 | SE 13 | SE 13 | SE 13 | E 7 | E 7 | ENE 6 | ENE 6 | E 8 | SE 12 | SE 18 | SE 16 | NNE 6 | SSE 16 | SSE 15 | NE 6 | S 9 | S 9 |
| kJ | 7 | 7 | 7 | 7 | 5 | 6 | 5 | 7 | 7 | 6 | 4 | 4 | 3 | 3 | 1 | 6 | 12 | 11 | 3 | 24 | 22 | 6 | 43 | 57 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | ENE 4 | ENE 4 | ENE 4 | NNE 3 | N 3 | N 3 | — | — | SSW 3 | S 4 | S 5 | S 6 | S 8 | S 8 | S 8 | S 7 | SSW 7 |
| kJ | — | — | — | — | — | — | — | 3 | 6 | 7 | 3 | 2 | 1 | — | — | 3 | 10 | 31 | 92 | 371 | 466 | 399 | 261 | 121 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 27 | 27 | 9 | 6 | 6 | 0 | 0 | 0 | 10 | 15 | 13 | 0 | 15 | 13 | 10 | 13 | 0 | 0 |
Best forecast wave conditions in Santa Catarina - Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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