Surf Forecasts:
How big are the waves at Siriu today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 3.5ft (1.1m), 7s period with S swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 5ft (1.5m), 9s period with S swell.
- Evening surf: Evening surf (21 Aug, local time) - 10ft (3.0m), 9s period with S swell.
The current surf forecast for Siriu at 12PM is: 1.2m 8s primary swell from a South direction and 0.7m 7s secondary swell from a East-northeast direction (forecast issued at 08:00am August 21). An open ocean swell of 1.6m 8s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 3.5ft (1.1m) | 7s |
| Afternoon (21 Aug) | 5ft (1.5m) | 9s |
| Evening (21 Aug) | 10ft (3.0m) | 9s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 19°C on Fri morning, min 9°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||||||||
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 |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | S 8 | S 7 | S 8 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 9 | S 10 | S 10 | S 10 | S 11 | S 11 | S 12 | SSE 13 | SSE 12 | S 12 | S 12 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 76 | 131 | 169 | 334 | 748 | 1672 | 1569 | 1372 | 1250 | 1146 | 1014 | 923 | 541 | 575 | 530 | 573 | 640 | 773 | 1075 | 1100 | 1765 | 2163 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | glassy | glassy | off | off | glassy | cross-on | cross-on | cross | cross-off |
High Tide | 12:33PM0.57m | 11:21PM0.37m | 12:43PM0.63m | 11:30PM0.44m | 12:57PM0.68m | |||||||||||||||||
Low Tide | 10:38PM0.37m | 4:12AM0.25m | 6:30PM0.40m | 5:20AM0.18m | 6:39PM0.35m | |||||||||||||||||
 |  | | |  |  | |  | |  | | | | | | | | | | | | | |
 | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — |
 | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:55 | — | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 19 | 18 | 15 | 14 | 14 | 13 | 12 | 12 | 14 | 13 | 11 | 11 | 10 | 10 | 9 | 12 | 14 | 14 | 12 | 12 |
Feels °C | 15 | 14 | 16 | 13 | 11 | 9 | 10 | 9 | 7 | 7 | 10 | 8 | 8 | 9 | 8 | 8 | 7 | 10 | 11 | 10 | 8 | 8 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | S 7 | S 8 | ENE 7 | ENE 8 | S 9 | S 9 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 11 | S 11 | S 12 | SSE 13 | SSE 12 | S 12 | SSE 13 |
| kJ | 56 | 131 | 169 | 54 | 58 | 1000 | 979 | 876 | 821 | 730 | 715 | 646 | 541 | 575 | 530 | 573 | 640 | 773 | 1075 | 1100 | 1214 | 1584 |
Swell 2 Height (m) Direction Period (s) | S 7 | ENE 7 | ENE 7 | E 11 | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | NE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 |
| kJ | 39 | 54 | 49 | 2 | — | 45 | 35 | 38 | 39 | 40 | 41 | 43 | 43 | 29 | 28 | 27 | 17 | 16 | 12 | 6 | 6 | 5 |
Swell 3 Height (m) Direction Period (s) | SE 6 | E 11 | E 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 8 | SSW 7 | SSW 8 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 9 | — | — | — | — | — | — | — | — | S 12 | S 12 |
| kJ | 76 | 186 | 316 | 334 | 748 | 1672 | 1569 | 1372 | 1250 | 1146 | 1014 | 923 | — | — | — | — | — | — | — | — | 1765 | 2163 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 0 | 0 | 10 | 72 | 21 | 13 | 13 | 13 | 13 | 13 | 10 | 38 | 10 | 0 | 0 | 0 | 0 | 0 | 13 | 13 | 15 | 0 |
Best forecast wave conditions in Santa Catarina - Sul | ||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||
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