Barre da Una surfForecast / São Paulo / Brazil

information circle12 Day Weather and Surf, issued 2 am Friday 05 Sep 2025 -03
Forecast update in hr  min  s Forecast update imminent
Barre da Una surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Barre da Una sea temperature is
20.6° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Barre da Una this week:

The surf forecast for Barre da Una over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 07) at 9PM. The primary swell is predicted to be 1.4m and 5s period with a secondary swell of 0.8m and 9s. Another secondary swell of 0.3m and 11s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Barre da Una in the next 12 days are 1.5m 12s and forecast to arrive on Thursday (Sep 11) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 8s period and expected on Saturday (Sep 06) at 12PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 7th Sep)2.5ft (0.8m) 9s
Best Surf 9PM (Mon 8th Sep)7ft (2.1m) 7s
Most Powerful 6AM (Thu 11th Sep)5ft (1.5m) 12s

Table - best surf conditions forecast for Barre da Una over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 12mm), heaviest on Sat afternoon. Warm (max 23°C on Fri morning, min 17°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 25°C on Mon night, min 19°C on Wed afternoon). Wind will be generally light.

Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
1
1
0
2
0
0
1
1
0
2
2
1
1
Swell
Height Map
Wave Height (m) & direction (?)
1.2
ESE
0.9
ESE
0.9
ESE
0.7
ESE
1.8
S
1.8
SSE
1.3
S
1.4
ESE
1.5
E
1.7
E
1.9
E
2.1
E
2.1
E
1.2
ESE
0.6
S
0.5
S
0.6
S
1.2
S
1.5
S
1.4
S
1.4
S
Period(s) (?)8888888766678813161513121212
Wave
Graph
(?)Metric surfscale
Energy (?)21115912475772398298322258286308494959268249299247609676673763
Wind
(km/h)
5
SSW
10
SSW
10
WSW
10
SSW
10
S
10
ESE
10
ESE
10
ESE
5
ENE
5
ESE
10
SE
10
NNE
20
SW
10
SW
5
N
5
SE
10
SSE
5
E
5
ENE
5
SSE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
oncrossononcross-
on
cross-
on
cross-
on
glassglasscross-
on
cross-
off
cross-
on
cross-
on
glassglasscross-
on
glassglasscross-
on
cross
High Tide
/ height (m)
2:07PM
1.22
1:39AM
1.14
2:31PM
1.26
2:07AM
1.24
2:54PM
1.26
2:37AM
1.30
3:18PM
1.23
3:08AM
1.32
3:41PM
1.16
3:42AM
1.30
4:05PM
1.08
4:18AM
1.23
4:29PM
0.99
Low Tide
/ height (m)
8:06PM
0.25
8:13AM
-0.09
8:38PM
0.22
8:50AM
-0.13
9:09PM
0.21
9:26AM
-0.10
9:38PM
0.22
10:02AM
-0.01
10:03PM
0.23
10:36AM
0.13
10:24PM
0.25
11:08AM
0.30
10:32PM
0.28
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Sunrise6:11--6:09--6:09--6:07--6:07--6:05--6:05--
Sunset-5:53--5:53--5:53--5:54--5:54--5:54--5:54-
clear
part cloud
rain showers
light rain
light rain
light rain
light rain
cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
light rain
part cloud
part cloud
part cloud
rain showers
Rain (mm)
--12441---------2---1
Temp. °C232119191818191918242425232322211919292621
Feels °C (?)232220201819202019252524222524242021302824
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for São Paulo

  1. weather stationWind Update calm at Santos wx mean that is clean at Barre da Una. A 1.3m swell from the ESE

    Barre da Una
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48 km away, 2 h 46 min ago

2 km/h
NW
0.0
20.6
Air / Water (°C)
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Barre da Una surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Barre da Una Surf forecast

The above surf forecast table for Barre da Una provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Barre da Una can be found by selecting the local surf guide option on the grey menu. Our Barre da 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 (Barre da 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 Barre da 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.

Are you planning a holiday in São Paulo? If you are looking for accommodation near Barre da Una, camping, hotels and holiday cottages in São Paulo, consider staying in Biritiba Mirim which is 26 km (16 miles) away. Other places in and around São Paulo where you can find information about places to rent, and car hire include Bertioga which is 27 km (17 miles) away, Mogi das Cruzes, Guararema and Moji das Cruzes.

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