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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 2 am 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 7AM is: 1.5m 12s primary swell from a South direction and 0.3m 8s secondary swell from a East-northeast direction (forecast issued at 02:00am May 15). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 4.5ft (1.4m) | 12s |
| Afternoon (15 May) | 4ft (1.2m) | 11s |
| Evening (15 May) | 3.5ft (1.1m) | 10s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Fri night. Warm (max 21°C on Sat afternoon, min 16°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 10 | S 11 | S 11 | S 11 | S 11 | S 11 | SSE 11 | SSE 11 | SSE 11 | S 11 | S 11 | SSE 10 | SSE 10 | SSE 10 | S 10 | S 10 | S 10 | |
773 | 786 | 736 | 528 | 410 | 332 | 319 | 270 | 275 | 286 | 281 | 326 | 275 | 286 | 286 | 286 | 229 | 229 | 184 | 177 | 136 | 127 | 96 | 94 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross | cross-on | glassy | glassy | off | glassy | glassy | glassy | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | glassy | cross-on | cross-on | cross-off | cross-off | |
High Tide | 1:22PM0.79m | 1:21AM0.59m | 2:04PM0.80m | 1:35AM0.55m | 2:47PM0.78m | |||||||||||||||||||
Low Tide | 7:25AM0.14m | 8:15PM0.15m | 8:02AM0.11m | 9:10PM0.23m | 8:39AM0.09m | |||||||||||||||||||
 |  | |  | | | |  | | | |  |  | |  | | | | | | | | | | |
 | — | — | 6:48 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — |
 | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:30 | — | — |
— | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 16 | 16 | 16 | 18 | 18 | 17 | 16 | 17 | 17 | 17 | 18 | 20 | 21 | 19 | 19 | 19 | 18 | 18 | 19 | 21 | 21 | 19 | 19 |
15 | 14 | 14 | 15 | 17 | 18 | 17 | 17 | 17 | 17 | 18 | 20 | 20 | 21 | 19 | 19 | 19 | 18 | 19 | 20 | 22 | 22 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 10 | S 11 | S 11 | S 11 | S 11 | S 11 | SSE 11 | SSE 11 | SSE 11 | S 11 | S 11 | SSE 10 | SSE 10 | SSE 10 | S 10 | S 10 | S 10 |
 kJ | 773 | 786 | 736 | 528 | 410 | 332 | 319 | 270 | 275 | 286 | 281 | 326 | 275 | 286 | 286 | 286 | 229 | 229 | 184 | 177 | 136 | 127 | 96 | 94 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 4 | E 5 | E 5 | E 5 | E 5 | E 5 | E 5 | E 5 |
| kJ | 14 | 14 | 14 | 14 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 6 | 11 | 19 | 19 | 13 | 13 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | ESE 14 | ESE 14 | ESE 14 | ESE 14 | SE 14 | SE 14 | SE 14 | SE 13 | SE 13 | SE 13 | SE 13 | ENE 8 | SE 13 | ENE 8 | E 8 | SE 13 | E 7 | E 7 | E 7 | SE 12 | SE 12 | E 7 | E 7 | SE 16 |
| kJ | 18 | 18 | 19 | 19 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 6 | 7 | 6 | 4 | 6 | 4 | 4 | 1 | 6 | 6 | 1 | 1 | 11 |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | SSW 3 | SSW 3 | — | — | — | — | — | — | — | — | — | E 4 | — | — | — | N 3 | N 3 | N 3 | N 3 | — | — | SW 2 |
| kJ | — | 3 | 4 | 4 | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 2 | 3 | 3 | 1 | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 10 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 26 | 9 | 9 | 6 | 0 | 0 | 0 | 13 | 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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