Surf Forecasts:
Barra do Una surf forecast from 17 Oct 2026:
- Best quality surf: Sunday 18 Oct, 9PM (local time) - 4.5ft (1.4m), 12s period, S swell with glassy winds.
- Most powerful swell: Sunday 18 Oct, 9PM (local time) - 4.5ft (1.4m), 12s period, S swell with 574 kJ wave energy.
- Next surfable swell (1★+): Saturday 17 Oct, 3PM (local time) - 3ft (0.9m), 9s period with SE swell.
Best Forecast Surf Conditions for Barra do Una this week:
The surf forecast for Barra do Una over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Oct 17) at 3PM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.8m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Barra do Una in the next 16 days are 1.4m 12s and forecast to arrive on Sunday (Oct 18) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Wednesday (Oct 21) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Sat 17th Oct) | 3ft (0.9m) 9s |
| Best Surf | 9PM (Sun 18th Oct) | 4.5ft (1.4m) 12s |
| Most Powerful | 9PM (Sun 18th Oct) | 4.5ft (1.4m) 12s |
Table - best surf conditions forecast for Barra do Una over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Sat morning. Warm (max 21°C on Sat afternoon, min 18°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Thu morning. Warm (max 21°C on Wed morning, min 19°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | |||||||||||||||
AM | PM | 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 8 | SE 9 | SE 9 | S 11 | S 11 | SSE 12 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 11 | SSE 10 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 11 | SSE 11 | SSE 11 | SE 11 | SSE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 115 | 126 | 118 | 250 | 338 | 478 | 407 | 400 | 306 | 326 | 302 | 255 | 311 | 214 | 150 | 141 | 143 | 149 | 146 | 115 | 65 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | on | cross-on | glassy | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-off | off |
High Tide | 5:38PM0.90m | 7:33AM0.86m | 12:58PM0.84m | 7:11PM0.83m | 12:19PM0.92m | 9:21PM0.86m | 12:00PM1.03m | 10:59PM0.99m | 12:14PM1.15m | 11:49PM1.14m | 12:38PM1.25m | 00:28AM1.27m | 1:05PM1.31m | 1:05AM1.38m | |||||||
Low Tide | 10:14AM0.69m | 11:01PM0.48m | 10:24AM0.79m | 4:13PM0.75m | 4:05AM0.48m | 5:07PM0.63m | 5:06AM0.35m | 5:46PM0.51m | 5:51AM0.23m | 6:21PM0.39m | 6:31AM0.12m | 6:54PM0.29m | 7:08AM0.05m | 7:25PM0.22m | |||||||
 |  |  | |  |  |  | | | | |  | | |  |  | | | | | | |
 | 5:33 | — | — | 5:31 | — | — | 5:31 | — | — | 5:30 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 6:14 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 4 | 6 | 2 | — | — | — | — |
Temp °C | 20 | 21 | 19 | 20 | 19 | 18 | 19 | 19 | 18 | 20 | 20 | 19 | 21 | 21 | 20 | 21 | 21 | 20 | 23 | 23 | 23 |
Feels °C | 21 | 22 | 19 | 19 | 17 | 18 | 18 | 18 | 16 | 19 | 18 | 17 | 20 | 21 | 19 | 22 | 22 | 22 | 24 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 9 | SE 9 | S 11 | S 11 | SSE 12 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 11 | SSE 10 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 11 | SSE 11 | ESE 7 | ESE 7 | ESE 7 |
| kJ | 115 | 126 | 118 | 250 | 338 | 478 | 407 | 400 | 306 | 326 | 302 | 255 | 311 | 214 | 143 | 141 | 143 | 149 | 82 | 62 | 48 |
Swell 2 Height (m) Direction Period (s) | S 7 | S 7 | S 8 | SE 9 | SE 11 | SE 10 | SE 10 | ESE 9 | SE 9 | ESE 8 | ESE 8 | ESE 10 | ESE 9 | — | — | — | — | — | SSE 11 | SE 11 | SSE 10 |
| kJ | 58 | 69 | 58 | 120 | 137 | 79 | 44 | 33 | 21 | 14 | 7 | 19 | 8 | — | — | — | — | — | 146 | 115 | 65 |
Swell 3 Height (m) Direction Period (s) | — | — | S 15 | SE 11 | S 14 | — | — | — | — | SE 11 | ESE 11 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 4 | 33 | 179 | — | — | — | — | 5 | 12 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NE 2 | SW 3 | — | — | — | — | — | — | — | — | E 4 | ESE 5 | ESE 6 | E 6 | ESE 6 | E 6 | — | — | — |
| kJ | — | — | 1 | 4 | — | — | — | — | — | — | — | — | 16 | 35 | 150 | 122 | 112 | 108 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 105 | 188 | 0 | 12 | 148 | 86 | 86 | 86 | 0 | 74 | 86 | 86 | 32 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Barra do Una Surf forecast
The above surf forecast table for Barra do Una provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Barra do Una can be found by selecting the local surf guide option on the grey menu. Our Barra do Una 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 (Barra do Una) 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 Barra do Una 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.
Barra do Una is 13 km (8 miles) from the city of Peruibe. If you plan a holiday in São Paulo, look for hotels and other accommodation in Peruibe. Peruibe has rooms for a wide range of budgets as well as car hire and transport links.
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