Surf Forecasts:
Boca da Barra surf forecast from 16 Sep 2026:
- Best quality surf: Tuesday 22 Sep, 6AM (local time) - 4.5ft (1.3m), 8s period, ESE swell with glassy winds.
- Most powerful swell: Wednesday 23 Sep, 9AM (local time) - 4.5ft (1.4m), 13s period, E swell with 643 kJ wave energy.
- Next surfable swell (1★+): Tuesday 22 Sep, 6AM (local time) - 4.5ft (1.3m), 8s period with ESE swell.
Best Forecast Surf Conditions for Boca da Barra this week:
The surf forecast for Boca da Barra over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 22) at 6AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.1m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Boca da Barra in the next 16 days are 1.4m 13s and forecast to arrive on Wednesday (Sep 23) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 22nd Sep) | 4.5ft (1.3m) 8s |
| Best Surf | 6AM (Tue 22nd Sep) | 4.5ft (1.3m) 8s |
| Most Powerful | 9AM (Wed 23rd Sep) | 4.5ft (1.4m) 13s |
Table - best surf conditions forecast for Boca da Barra over the next 16 days.
The Lowdown
Alright, let’s get into this.
Well, to be honest, looking at the whole 16-day window for Boca da Barra, it’s a tough run. There are no standout days where everything comes together nicely. The surf is on offer, but the conditions are pretty average for the most part. The first real pulse of energy doesn’t show up until around Thursday the 19th, but even then, the wind is a mess.
Right off the bat, Wednesday morning the 16th has a weak 3ft east swell, but the wind is cross-on from the NNE at 6 mph, and the wave comment is “poor surf conditions.” The water temp is 80°, which is a touch warmer than normal for this time of year.
Thursday the 17th morning sees a bigger push of energy with a combined swell energy of 547 (moderate to strong), but an onshore ESE breeze at 9 mph keeps things choppy. The swell is 4ft from the ESE with an 11-second period, which is a nice groundswell, but the wind kills it.
The real size comes in on Saturday the 19th with a 8ft SE swell and a 7-second period. That’s a short-period, wind-driven swell, and with 16 mph cross-on winds and rain, it’s messy. That’s expert-only size, but the quality is just not there.
There’s a flicker of hope on Sunday the 22nd morning. The swell drops to 5ft from the ESE with an 8-second period, and the wind is light and onshore from the ENE. The combined energy is 244, still weak-moderate, and we only get a “marginal” score. Not worth getting excited about.
Later in the forecast, around Wednesday the 24th and Thursday the 25th, we see a cleaner east swell developing with longer periods of 11 to 13 seconds. The morning of the 24th has a 5ft east swell (11 sec) and an onshore ENE breeze at 9 mph, but the comment stays “marginal.” The wind is just not cooperating.
The biggest event on the charts is the 1st of October. A big 8ft SSE swell hits with a combined energy of 924 (strong), but it’s paired with a 12 mph cross-on NE wind. That’s big, but it’s going to be a washing machine out there. Only for the experts, and honestly, with that wind, it looks more like a kiteboarding day than a surfing one.
Overall, this stretch is a bit of a write-off for quality surfing. The river mouth at Boca da Barra is consistent, but the wind is almost never right. The best you can hope for is a short window on the 24th or 25th if the light onshore winds clean it up, but it’s a gamble. When it’s this poor for this long, don’t worry too much—it tends not to stay like this forever.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Fri night. Warm (max 26°C on Wed morning, min 23°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 40mm), heaviest during Sat morning. Warm (max 25°C on Sun morning, min 22°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||
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) | E 8 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 6 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | ESE 7 | ESE 7 | ESE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 143 | 151 | 146 | 286 | 178 | 86 | 145 | 198 | 459 | 585 | 456 | 383 | 256 | 231 | 214 | 99 | 79 | 172 | 238 | 229 | 182 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross-on | on | on | on | on | on | on | cross-on |
High Tide | 6:19PM1.57m | 6:54AM1.45m | 7:02PM1.42m | 7:56AM1.30m | 8:11PM1.30m | 9:42AM1.22m | 10:05PM1.27m | 11:34AM1.30m | 11:40PM1.38m | 12:33PM1.44m | 00:34AM1.55m | 1:11PM1.60m | 1:13AM1.73m | ||||||||
Low Tide | 12:08PM0.55m | 00:31AM0.51m | 12:45PM0.71m | 1:24AM0.65m | 1:49PM0.85m | 3:08AM0.75m | 4:13PM0.89m | 5:12AM0.71m | 5:49PM0.80m | 6:18AM0.58m | 6:38PM0.66m | 7:00AM0.43m | 7:15PM0.52m | ||||||||
 |  |  | | |  |  | |  | | | | | | | | |  | | | | |
 | 5:30 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — | 5:26 | — | — | 5:24 | — | — |
 | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — |
mm | — | — | — | — | — | — | 2 | 1 | 19 | 9 | 5 | 13 | 6 | 2 | 3 | 2 | — | — | — | — | — |
Temp °C | 26 | 25 | 24 | 26 | 25 | 24 | 25 | 26 | 24 | 24 | 24 | 23 | 25 | 25 | 24 | 25 | 25 | 24 | 27 | 25 | 24 |
Feels °C | 27 | 26 | 24 | 25 | 24 | 25 | 25 | 26 | 25 | 24 | 23 | 23 | 26 | 26 | 26 | 26 | 26 | 26 | 28 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | E 8 | ESE 11 | ESE 11 | ESE 11 | ENE 6 | ESE 10 | SE 10 | SE 9 | SSE 12 | — | SSE 11 | S 12 | ESE 7 | ESE 7 | ESE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 |
| kJ | 143 | 151 | 146 | 286 | 18 | 86 | 96 | 75 | 15 | — | 12 | 3 | 256 | 231 | 214 | 99 | 79 | 172 | 238 | 229 | 182 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 9 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | S 15 | S 14 | SSE 12 | — | — | — | S 11 | S 10 | SE 14 | ENE 8 | ENE 8 | SSE 13 | S 12 | ESE 12 | ESE 11 |
| kJ | 20 | 8 | 19 | 28 | 32 | 16 | 17 | 15 | 15 | — | — | — | 2 | 2 | 7 | 94 | 77 | 16 | 3 | 29 | 95 |
Swell 3 Height (m) Direction Period (s) | — | SSE 11 | SSE 11 | S 13 | SSE 13 | SSE 12 | S 12 | S 11 | — | — | — | — | — | — | SE 14 | SSE 9 | SE 8 | SE 8 | E 12 | S 12 | S 11 |
| kJ | — | 12 | 12 | 4 | 17 | 14 | 3 | 2 | — | — | — | — | — | — | 7 | 8 | 3 | 3 | 3 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | — | ENE 7 | E 5 | ESE 10 | ESE 10 | ESE 5 | ESE 6 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | — | — | — | — | — | — | — | — | — |
| kJ | — | 61 | 34 | 229 | 178 | 66 | 145 | 198 | 459 | 585 | 456 | 383 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 149 | 686 | 686 | 686 | 686 | 686 | 662 | 1172 | 621 | 621 | 621 | 602 | 602 | 602 | 602 | 149 | 621 | 39 | 149 | 997 | 621 |
Best forecast wave conditions in Bahia - Sul | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Boca da Barra Surf forecast
The above surf forecast table for Boca da Barra provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Boca da Barra can be found by selecting the local surf guide option on the grey menu. Our Boca da Barra 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 (Boca da Barra) 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 Boca da Barra 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.
Boca da Barra is 37 km (23 miles) from Ubaitaba. If you plan a holiday in Bahia - Sul, look for hotels and other accommodation in Ubaitaba. Ubaitaba has rooms for a wide range of budgets as well as car hire and transport links.
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