Surf Forecasts:
Barra do Una surf forecast from 18 Sep 2026:
- Best quality surf: Wednesday 23 Sep, 9PM (local time) - 5ft (1.5m), 16s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 23 Sep, 9PM (local time) - 5ft (1.5m), 16s period, S swell with 1,189 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 3PM (local time) - 2.5ft (0.7m), 10s period with S 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 Friday (Sep 18) at 3PM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.8m and 6s. 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 1.5m 16s and forecast to arrive on Wednesday (Sep 23) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Friday (Sep 18) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 18th Sep) | 2.5ft (0.7m) 10s |
| Best Surf | 9PM (Wed 23rd Sep) | 5ft (1.5m) 16s |
| Most Powerful | 9PM (Wed 23rd Sep) | 5ft (1.5m) 16s |
Table - best surf conditions forecast for Barra do Una over the next 16 days.
Short Range ForecastModerate rain (total 10mm), heaviest on Sun morning. Warm (max 25°C on Sun afternoon, min 19°C on Fri morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Tue afternoon. Warm (max 34°C on Mon morning, min 17°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||
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) | S 11 | S 10 | E 7 | ESE 7 | ESE 7 | E 8 | E 9 | ESE 9 | E 8 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | E 8 | ESE 9 | S 7 | SSE 10 | SSE 16 | S 14 | S 14 | SSE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 149 | 100 | 247 | 176 | 208 | 329 | 575 | 366 | 675 | 213 | 134 | 70 | 53 | 50 | 103 | 212 | 269 | 1003 | 593 | 447 | 444 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | on | off | cross-on | cross-on | on | cross | cross-on | cross-off | glassy | on | glassy |
High Tide | 5:37PM0.87m | 8:05AM0.81m | 1:30PM0.87m | 7:21PM0.77m | 1:03PM0.96m | 11:09PM0.81m | 12:55PM1.07m | 00:02AM0.97m | 1:03PM1.18m | 00:31AM1.13m | 1:19PM1.28m | 1:00AM1.27m | 1:41PM1.35m | 1:30AM1.39m | |||||||
Low Tide | 10:28AM0.68m | 11:08PM0.49m | 10:10AM0.78m | 5:22PM0.75m | 11:49PM0.64m | 4:51AM0.49m | 5:59PM0.62m | 5:47AM0.35m | 6:29PM0.50m | 6:27AM0.21m | 6:57PM0.39m | 7:02AM0.09m | 7:26PM0.31m | 7:35AM0.00m | 7:53PM0.24m | ||||||
 | |  | |  |  |  |  |  |  | |  | |  |  | | | | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — |
mm | — | — | 3 | — | 1 | 3 | 3 | — | — | — | — | — | 1 | 6 | 6 | 5 | 7 | 4 | 1 | — | — |
Temp °C | 20 | 20 | 19 | 21 | 20 | 19 | 21 | 25 | 24 | 34 | 27 | 22 | 22 | 21 | 19 | 18 | 18 | 19 | 20 | 20 | 19 |
Feels °C | 21 | 20 | 17 | 21 | 19 | 17 | 22 | 27 | 24 | 34 | 27 | 23 | 24 | 24 | 19 | 18 | 18 | 21 | 21 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | S 11 | ESE 6 | S 10 | SSE 9 | SSE 9 | SSE 9 | ESE 9 | S 13 | ESE 8 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | S 5 | ESE 9 | SSE 6 | SSE 10 | SSE 16 | S 14 | S 14 | SSE 13 |
| kJ | 149 | 37 | 49 | 29 | 28 | 16 | 388 | 12 | 293 | 213 | 134 | 70 | 53 | 16 | 103 | 117 | 269 | 1003 | 593 | 447 | 444 |
Swell 2 Height (m) Direction Period (s) | ESE 5 | S 10 | — | S 15 | S 13 | SSE 13 | S 9 | — | S 12 | S 11 | S 11 | S 10 | S 9 | E 8 | S 11 | ESE 9 | SSE 18 | ESE 6 | ESE 6 | ESE 6 | ESE 6 |
| kJ | 28 | 100 | — | 4 | 4 | 16 | 6 | — | 3 | 2 | 2 | 2 | 2 | 50 | 2 | 44 | 260 | 47 | 50 | 55 | 58 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 9 | — | — | — | — | S 13 | — | — | — | — | E 14 | S 12 | S 9 | — | S 14 | S 13 | SE 12 | SE 12 | ESE 11 | ESE 11 |
| kJ | 9 | 9 | — | — | — | — | 13 | — | — | — | — | 4 | 3 | 2 | — | 98 | 117 | 38 | 22 | 13 | 11 |
Wind waves Height (m) Direction Period (s) | E 5 | ESE 6 | E 7 | ESE 7 | ESE 7 | E 8 | E 9 | ESE 9 | E 8 | — | NW 2 | — | SW 4 | — | SSE 5 | S 7 | ESE 5 | ESE 6 | E 6 | — | — |
| kJ | 57 | 74 | 247 | 176 | 208 | 329 | 575 | 366 | 675 | — | 1 | — | 19 | — | 22 | 212 | 40 | 77 | 100 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 86 | 86 | 152 | 67 | 0 | 0 | 0 | 0 | 114 | 0 | 12 | 7 | 124 | 152 | 152 | 0 | 0 | 98 | 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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