Barra do Sai surfForecast / Santa Catarina – Norte / Brazil

information circle12 Day Weather and Surf, issued 2 am Thursday 01 Jan 2026 -03
Forecast update in hr  min  s Forecast update imminent
Barra do Sai surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Barra do Sai sea temperature is
27.9° C
(Which is 2.4°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Barra do Sai this week:

The surf forecast for Barra do Sai over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jan 05) at 6AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.3m and 12s. 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 Sai in the next 12 days are 1.7m 8s and forecast to arrive on Sunday (Jan 04) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 7s period and expected on Thursday (Jan 08) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 5th Jan)2.5ft (0.8m) 6s
Best Surf 6AM (Mon 5th Jan)2.5ft (0.8m) 6s
Most Powerful 9AM (Sun 4th Jan)5.5ft (1.7m) 8s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 15mm), heaviest on Fri afternoon. Warm (max 31°C on Sat afternoon, min 21°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Sun night. Warm (max 24°C on Tue morning, min 19°C on Sun night). Wind will be generally light.

Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
0
1
Swell
Height Map
Wave Height (m) & direction (?)
0.3
SE
0.3
SE
0.2
SSE
0.2
SSE
0.4
SSE
0.2
E
0.3
SE
0.3
SE
1.1
SE
1.7
SSE
0.8
SE
0.8
SE
0.4
SE
0.8
SE
0.7
SE
0.4
SE
0.2
SSE
0.7
E
0.8
E
0.7
E
0.7
E
Period(s) (?)12111110107131258126111155105777
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2320111032426226034521743301372410921564343
Wind
(km/h)
5
NW
5
E
5
W
5
NE
15
E
5
WSW
0
N
10
ENE
30
SSE
15
S
10
SSE
15
SSE
10
S
15
SE
10
ESE
0
E
15
E
15
NNE
0
N
15
ENE
10
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offglassglassglasscross-
on
cross-
off
glasscrossoncross-
on
cross-
on
cross-
on
cross-
on
ononglasscross-
on
cross-
off
glasscross-
on
cross-
off
High Tide
/ height (m)
1:32PM
1.09
2:18AM
1.41
2:13PM
1.13
3:04AM
1.42
2:52PM
1.16
3:47AM
1.39
3:30PM
1.20
4:28AM
1.33
4:07PM
1.23
5:07AM
1.24
4:45PM
1.23
5:45AM
1.16
5:26PM
1.20
Low Tide
/ height (m)
7:51PM
0.20
9:21AM
0.47
8:06PM
0.12
9:30AM
0.55
8:29PM
0.07
8:57AM
0.58
8:59PM
0.04
9:07AM
0.57
9:31PM
0.06
9:32AM
0.54
10:06PM
0.10
10:03AM
0.51
10:41PM
0.18
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Sunrise5:24--5:26--5:26--5:26--5:28--5:28--5:30--
Sunset-7:08--7:08--7:08--7:09--7:09--7:09--7:09-
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
clear
part cloud
thunderstorm
light rain
cloud
rain showers
part cloud
part cloud
rain showers
clear
clear
part cloud
clear
clear
part cloud
Rain (mm)
-33141--32-4--3------
Temp. °C273025282922293125212120222222242423262624
Feels °C (?)303429313124303324222119202021232323262626
  • 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 Sai Surf forecast

The above surf forecast table for Barra do Sai 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 Sai can be found by selecting the local surf guide option on the grey menu. Our Barra do Sai 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 Sai) 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 Sai 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 Sai is 1 km (1 miles) from the city of Guaratuba. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Guaratuba. Guaratuba has rooms for a wide range of budgets as well as car hire and transport links.

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