Surf Forecasts:
Barra do Una surf forecast from 12 Sep 2026:
- Best quality surf: Monday 14 Sep, 12PM (local time) - 4.5ft (1.4m), 8s period, SE swell with glassy winds.
- Most powerful swell: Tuesday 15 Sep, 12AM (local time) - 4.5ft (1.4m), 8s period, SE swell with 273 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 6AM (local time) - 1.5ft (0.4m), 11s period with SSE 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 (Sep 12) at 6AM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.4m and 8s. Another secondary swell of 0.4m and 5s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Barra do Una in the next 16 days are 1.4m 8s and forecast to arrive on Tuesday (Sep 15) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Friday (Sep 18) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sat 12th Sep) | 1.5ft (0.4m) 11s |
| Best Surf | 12PM (Mon 14th Sep) | 4.5ft (1.4m) 8s |
| Most Powerful | 12AM (Tue 15th Sep) | 4.5ft (1.4m) 8s |
Table - best surf conditions forecast for Barra do Una over the next 16 days.
Short Range ForecastHeavy rain (total 85mm), heaviest during Sat night. Warm (max 22°C on Sat morning, min 17°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Tue night. Warm (max 20°C on Tue afternoon, min 17°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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) | SSE 11 | S 11 | SSE 6 | SSE 7 | S 7 | SSE 6 | SSE 7 | SE 8 | SE 8 | SSW 10 | S 9 | SE 8 | SE 8 | S 7 | S 7 | SSE 7 | SSE 8 | S 9 | ESE 6 | S 10 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 23 | 21 | 103 | 143 | 88 | 56 | 181 | 235 | 273 | 232 | 220 | 93 | 191 | 154 | 139 | 89 | 122 | 106 | 50 | 80 | 67 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-on | cross | cross | cross-on | on | on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-off | cross-off | cross-off | glassy | cross-off | off |
High Tide | 3:14PM1.31m | 3:17AM1.45m | 3:36PM1.27m | 3:48AM1.39m | 3:58PM1.22m | 4:20AM1.30m | 4:19PM1.15m | 4:53AM1.18m | 4:40PM1.07m | 5:32AM1.04m | 5:04PM0.98m | 6:25AM0.91m | 5:37PM0.87m | ||||||||
Low Tide | 9:07AM0.07m | 8:56PM0.24m | 9:21AM0.15m | 9:11PM0.19m | 9:35AM0.25m | 9:30PM0.18m | 9:50AM0.35m | 9:53PM0.20m | 10:05AM0.45m | 10:17PM0.26m | 10:19AM0.56m | 10:42PM0.36m | 10:28AM0.68m | 11:08PM0.49m | |||||||
 | |  |  |  | | | |  |  | |  |  | | | |  |  | | | | |
 | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:01 | — | — |
 | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — |
mm | 2 | 1 | 37 | 8 | 14 | 15 | 2 | 5 | 1 | — | — | 2 | 2 | 2 | 1 | — | — | — | — | 1 | 1 |
Temp °C | 22 | 20 | 19 | 18 | 18 | 18 | 19 | 19 | 18 | 19 | 20 | 18 | 19 | 19 | 18 | 19 | 19 | 18 | 19 | 19 | 20 |
Feels °C | 23 | 20 | 19 | 19 | 18 | 17 | 21 | 21 | 17 | 18 | 19 | 18 | 18 | 18 | 16 | 17 | 17 | 15 | 20 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | S 10 | SSE 7 | S 7 | SSE 6 | SSE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 8 | SSE 7 | SSE 7 | SSE 8 | S 9 | ESE 6 | ESE 6 | ESE 6 |
| kJ | 19 | 19 | 18 | 143 | 88 | 56 | 181 | 235 | 273 | 216 | 182 | 93 | 104 | 102 | 82 | 89 | 122 | 106 | 50 | 43 | 41 |
Swell 2 Height (m) Direction Period (s) | SSE 11 | S 11 | — | ESE 8 | ESE 8 | SSE 9 | E 5 | SSE 12 | S 11 | S 11 | S 9 | ESE 8 | SSE 13 | S 6 | SE 8 | ESE 8 | SE 8 | ESE 8 | S 8 | S 10 | S 10 |
| kJ | 23 | 21 | — | 12 | 11 | 32 | 19 | 48 | 61 | 58 | 42 | 38 | 129 | 65 | 70 | 46 | 35 | 28 | 30 | 80 | 67 |
Swell 3 Height (m) Direction Period (s) | E 5 | SE 11 | — | — | E 11 | ESE 9 | SSE 13 | — | — | — | S 10 | S 10 | SE 8 | SSE 12 | S 10 | SSE 12 | SSE 12 | — | SSE 10 | ESE 10 | SSE 12 |
| kJ | 5 | 5 | — | — | 2 | 7 | 32 | — | — | — | 96 | 50 | 17 | 111 | 80 | 47 | 45 | — | 35 | 10 | 14 |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | SSE 6 | — | ESE 5 | ESE 5 | — | — | SW 4 | SSW 10 | S 9 | — | SE 8 | S 7 | S 7 | — | ESE 4 | E 4 | E 6 | — | — |
| kJ | — | 4 | 103 | — | 20 | 29 | — | — | 17 | 232 | 220 | — | 191 | 154 | 139 | — | 12 | 33 | 74 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 228 | 232 | 88 | 88 | 152 | 99 | 12 | 7 | 7 | 105 | 7 | 188 | 177 | 86 | 0 | 86 | 75 | 0 | 0 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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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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