Barra do Una surfForecast / São Paulo / Brazil

information circle12 Day Weather and Surf, issued 2 am Sunday 21 Dec 2025 -03
Forecast update in hr  min  s Forecast update imminent
Barra do Una surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Barra do Una sea temperature is
25.1° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Barra do Una this week:

The surf forecast for Barra do Una over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 21) at 3PM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.3m and 11s. Another secondary swell of 0.1m and 10s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Barra do Una in the next 12 days are 1.6m 7s and forecast to arrive on Monday (Dec 22) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Sunday (Dec 21) at 9PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Sun 21st Dec)2.5ft (0.8m) 6s
Best Surf 3AM (Mon 22nd Dec)5ft (1.6m) 7s
Most Powerful 3AM (Mon 22nd Dec)5ft (1.6m) 7s

Table - best surf conditions forecast for Barra do Una over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 30°C on Tue morning, min 22°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 34°C on Wed morning, min 23°C on Fri night). Wind will be generally light.

Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
1
0
1
2
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
Swell
Height Map
Wave Height (m) & direction (?)
0.8
ESE
0.8
ESE
1.1
E
1.1
ESE
1.3
E
1.4
E
1
ESE
0.9
ESE
0.9
E
0.7
ESE
0.7
ESE
0.5
E
0.6
E
0.5
E
0.5
ESE
0.5
E
0.5
ESE
0.3
ESE
0.2
S
0.6
S
0.7
S
Period(s) (?)666787777777777777141211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)36369114019620011797835557273724282426915110119
Wind
(km/h)
0
ESE
15
E
15
NE
5
SSW
15
ENE
15
NE
0
SW
10
ENE
10
N
5
NW
10
ENE
10
WSW
10
SW
10
ESE
5
SSW
10
SSE
10
SSE
10
ENE
5
ESE
15
E
5
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
off
offoncross-
off
offglasscross-
off
cross-
off
cross-
off
cross-
off
cross-
on
oncrossoncross-
on
cross-
on
cross-
off
glasscross-
off
glass
High Tide
/ height (m)
3:08PM
1.24
3:56AM
1.30
3:45PM
1.26
4:34AM
1.28
4:25PM
1.26
5:15AM
1.24
5:08PM
1.23
6:01AM
1.18
5:56PM
1.17
6:53AM
1.11
6:51PM
1.10
7:52AM
1.03
7:59PM
1.04
Low Tide
/ height (m)
9:30AM
0.41
9:32PM
0.09
9:57AM
0.44
10:05PM
0.11
10:23AM
0.47
10:41PM
0.16
10:51AM
0.52
11:21PM
0.23
11:25AM
0.58
12:16AM
0.32
12:25PM
0.64
2:12AM
0.40
3:22PM
0.64
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunrise5:16--5:16--5:16--5:16--5:18--5:18--5:18--
Sunset-6:54--6:55--6:55--6:57--6:57--6:57--6:58-
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
clear
thunderstorm
thunderstorm
Rain (mm)
-------------------21
Temp. °C262623272624302826343028282725262624272624
Feels °C (?)282824292826323028353130303029292927302826
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 12 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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