Surf Forecasts:
Barre do Sai surf forecast from 18 Sep 2026:
- Best quality surf: Sunday 20 Sep, 6AM (local time) - 8ft (2.5m), 8s period, ENE swell with cross-offshore winds.
- Most powerful swell: Sunday 20 Sep, 9AM (local time) - 8ft (2.5m), 9s period, ENE swell with 1,159 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 6PM (local time) - 3ft (0.9m), 6s period with E swell.
Best Forecast Surf Conditions for Barre do Sai this week:
The surf forecast for Barre do Sai over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 18) at 6PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.5m and 6s. Another secondary swell of 0.2m and 10s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Barre do Sai in the next 16 days are 2.5m 9s and forecast to arrive on Sunday (Sep 20) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 18th Sep) | 3ft (0.9m) 6s |
| Best Surf | 6AM (Sun 20th Sep) | 8ft (2.5m) 8s |
| Most Powerful | 9AM (Sun 20th Sep) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Barre do Sai over the next 16 days.
Short Range ForecastHeavy rain (total 54mm), heaviest during Sat night. Warm (max 23°C on Sun morning, min 16°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 46mm), heaviest during Mon afternoon. Warm (max 23°C on Mon morning, min 16°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SE 12 | SE 11 | SE 10 | E 6 | E 7 | E 7 | ENE 8 | ENE 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | E 8 | E 8 | E 9 | E 9 | SE 16 | SE 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 35 | 29 | 18 | 120 | 131 | 102 | 226 | 1159 | 320 | 224 | 201 | 166 | 132 | 71 | 69 | 71 | 73 | 88 | 61 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross-on | glassy | cross | glassy | cross | glassy | glassy | cross-on | cross-on | glassy | glassy |
High Tide | 7:46AM0.91m | 2:54PM0.88m | 7:35PM0.79m | 3:24AM0.63m | 2:40PM0.87m | 9:23PM0.80m | 10:57AM0.98m | 10:48PM0.91m | 11:57AM1.12m | 11:46PM1.06m | 12:37PM1.25m | 00:30AM1.21m | 1:12PM1.36m | 1:08AM1.35m | |||||
Low Tide | 11:12PM0.33m | 11:24AM0.67m | 5:58PM0.77m | 11:58PM0.47m | 5:05AM0.61m | 12:12PM0.80m | 6:21PM0.66m | 5:53AM0.47m | 6:44PM0.56m | 6:28AM0.33m | 7:06PM0.47m | 6:57AM0.20m | 7:28PM0.39m | 7:23AM0.10m | 7:47PM0.34m | ||||
 |  | |  |  |  |  |  |  |  | | | |  |  | | | | | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 6:07 | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:09 | — |
mm | — | — | — | 5 | 4 | 15 | 27 | — | 3 | 1 | 1 | 8 | 18 | 1 | 6 | 4 | 4 | 3 | — |
Temp °C | 18 | 18 | 17 | 19 | 19 | 19 | 19 | 23 | 23 | 21 | 23 | 22 | 20 | 22 | 21 | 18 | 16 | 16 | 16 |
Feels °C | 17 | 19 | 18 | 18 | 19 | 19 | 18 | 23 | 24 | 24 | 26 | 25 | 23 | 24 | 25 | 17 | 16 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | SE 12 | E 4 | E 5 | SSE 9 | SE 9 | SE 9 | S 13 | E 9 | S 12 | E 9 | E 9 | E 9 | ESE 9 | E 8 | E 8 | E 9 | E 9 | E 9 | ESE 9 |
| kJ | 35 | 6 | 13 | 8 | 3 | 3 | 3 | 299 | 3 | 224 | 201 | 166 | 132 | 71 | 69 | 71 | 73 | 74 | 61 |
Swell 2 Height (m) Direction Period (s) | E 7 | SE 11 | SE 10 | — | — | S 13 | SSE 11 | SSE 13 | — | S 12 | S 11 | S 10 | SSE 5 | S 8 | S 8 | S 13 | SE 16 | SSE 5 | SE 14 |
| kJ | 4 | 29 | 15 | — | — | 3 | 13 | 16 | — | 3 | 2 | 2 | 19 | 1 | 1 | 3 | 38 | 11 | 53 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | — | — | — | S 11 | — | — | — | — | — | S 9 | S 12 | S 11 | E 16 | E 15 | SE 16 | ESE 13 |
| kJ | 11 | 20 | 18 | — | — | — | 2 | — | — | — | — | — | 2 | 3 | 2 | 5 | 4 | 88 | 16 |
Wind waves Height (m) Direction Period (s) | ENE 3 | — | — | E 6 | E 7 | E 7 | ENE 8 | ENE 9 | E 9 | — | — | — | — | — | — | SE 6 | SSE 6 | — | — |
| kJ | 1 | — | — | 120 | 131 | 102 | 226 | 1159 | 320 | — | — | — | — | — | — | 36 | 23 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 27 | 57 | 51 | 239 | 239 | 164 | 13 | 235 | 0 | 155 | 0 | 13 | 0 | 0 | 87 | 86 | 0 | 0 |
Best forecast wave conditions in Santa Catarina - Norte | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
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Information about the Barre do Sai Surf forecast
The above surf forecast table for Barre do Sai provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Barre do Sai can be found by selecting the local surf guide option on the grey menu. Our Barre do Sai surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Barre do Sai) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Barre do Sai may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Barre do Sai is 13 km (8 miles) from Guaratuba. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Guaratuba. Guaratuba has rooms for a wide range of budgets as well as car hire and transport links.
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