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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 am Thursday 21 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
20.4° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Siriu today?
The current surf forecast for Siriu at 3PM is: 3.0m 14s primary swell from a South direction and 2.5m 14s secondary swell from a South-southeast direction (forecast issued at 08:00am May 21). The wind direction is predicted to be cross-shore and the swell rating is 11.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 10ft (3.0m) | 14s |
| Afternoon (21 May) | 10ft (3.0m) | 14s |
| Evening (21 May) | 8ft (2.5m) | 14s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 21mm), heaviest during Fri night. Very mild (max 17°C on Fri afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSE 15 | SSE 14 | SSE 14 | S 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | E 7 | SSE 11 | |
3640 | 3496 | 3353 | 3717 | 2409 | 2267 | 2541 | 2445 | 2411 | 2167 | 1937 | 1910 | 1677 | 1422 | 1211 | 1152 | 903 | 715 | 599 | 514 | 486 | 411 | 376 | 303 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | cross | cross-off | off | off | off | cross-off | cross | cross-on | glassy | glassy | off | off | glassy | glassy | glassy | cross | cross-off | cross-off | cross-off | off | |
High Tide | 3:05AM0.59m | 10:39PM0.66m | 3:47AM0.59m | 11:24PM0.64m | 4:48AM0.57m | 11:54PM0.61m | ||||||||||||||||||
Low Tide | 12:14PM0.14m | 1:57AM0.57m | 1:26PM0.17m | 2:50AM0.55m | 2:35PM0.19m | |||||||||||||||||||
 |  | | | |  | | |  |  |  | | | |  |  | | | | | | | | | |
 | 6:50 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | 6:52 |
 | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:29 | — | — | — | — | — | — | — | 5:29 | — | — | — | 5:28 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 9 | 3 | — | — | — | 1 | 2 | 2 | — | |
Temp °C | 12 | 14 | 16 | 16 | 14 | 13 | 12 | 12 | 12 | 14 | 16 | 17 | 16 | 15 | 13 | 12 | 13 | 14 | 16 | 16 | 15 | 16 | 16 | 16 |
8 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 12 | 14 | 16 | 16 | 15 | 11 | 11 | 13 | 14 | 16 | 15 | 14 | 15 | 15 | 15 | |
Swell 1 Height (m) Direction Period (s) | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | E 6 | E 7 | E 7 |
 kJ | 3640 | 3496 | 3353 | 2747 | 2409 | 2267 | 2541 | 2445 | 2411 | 2167 | 1937 | 1910 | 1677 | 1422 | 1211 | 1152 | 903 | 715 | 599 | 514 | 486 | 163 | 226 | 271 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | E 4 | — | E 5 | E 9 | E 9 | — | ESE 6 | ESE 6 | E 6 | SSE 12 | SSE 11 | SSE 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | 15 | 2 | 2 | — | 106 | 94 | 108 | 411 | 376 | 303 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | S 14 | — | — | — | — | — | — | — | — | — | — | — | — | ESE 5 | ESE 6 | — | ESE 6 | E 6 | E 7 | E 7 | — |
| kJ | — | — | — | 3717 | — | — | — | — | — | — | — | — | — | — | — | — | 64 | 118 | — | 140 | 170 | 247 | 363 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 13 | 21 | 38 | 13 | 0 | 0 | 0 | 0 | 0 | 10 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Santa Catarina - Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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