Barra de Guaratiba surfForecast / Rio de Janeiro / Brazil

information circle12 Day Weather and Surf, issued 2 pm Wednesday 17 Dec 2025 -03
Forecast update in hr  min  s Forecast update imminent
Barra de Guaratiba surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Barra de Guaratiba sea temperature is
27.0° C
(Which is 2.4°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Barra de Guaratiba this week:

The surf forecast for Barra de Guaratiba over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 18) at 12AM. The primary swell is predicted to be 1.8m and 8s period with a secondary swell of 0.4m and 12s. Another secondary swell of 1.0m and 7s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Barra de Guaratiba in the next 12 days are 1.8m 8s and forecast to arrive on Thursday (Dec 18) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 8s period and expected on Wednesday (Dec 24) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 18th Dec)6ft (1.8m) 8s
Best Surf12AM (Thu 18th Dec)6ft (1.8m) 8s
Most Powerful12AM (Thu 18th Dec)6ft (1.8m) 8s

Table - best surf conditions forecast for Barra de Guaratiba over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 14mm), heaviest on Thu night. Warm (max 25°C on Sat morning, min 20°C on Wed afternoon). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 32°C on Tue morning, min 22°C on Sat night). Wind will be generally light.

Wed
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
2
2
2
2
2
1
1
1
0
0
0
0
1
1
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.7
SSW
1.8
S
1.3
SSW
1.3
SSW
1.3
SSW
1
SSW
0.9
SSW
0.5
SSW
0.6
SSW
0.5
SSW
0.3
SSW
0.3
SSW
0.5
S
0.6
S
0.4
SSW
0.5
S
0.4
SSW
0.3
SSW
0.2
SSW
0.2
S
0.1
S
Period(s) (?)889910991010981412111312111110109
Wave
Graph
(?)Metric surfscale
Energy kJ (?)36345425127730118114659724714367791587141221072
Wind
(km/h)
15
SSW
0
NNE
5
N
10
E
10
ENE
5
ENE
15
ESE
10
ENE
10
ENE
15
SE
10
NE
15
ENE
20
ESE
10
NE
15
NE
20
E
10
NE
15
N
20
E
10
NNE
15
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onglassglasscross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offoffcross-
off
offoffcross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
1:59AM
1.05
1:38PM
0.95
2:34AM
1.08
2:10PM
0.98
3:06AM
1.10
2:41PM
1.01
3:39AM
1.10
3:13PM
1.04
4:11AM
1.08
3:47PM
1.06
4:46AM
1.06
4:23PM
1.07
5:24AM
1.03
Low Tide
/ height (m)
7:44PM
0.16
8:22AM
0.36
8:20PM
0.11
8:57AM
0.35
8:56PM
0.07
9:32AM
0.35
9:34PM
0.05
10:06AM
0.36
10:13PM
0.05
10:43AM
0.38
10:54PM
0.07
11:22AM
0.41
11:38PM
0.10
Wed
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Sunrise--5:03--5:03--5:03--5:05--5:05--5:05--5:05
Sunset6:36--6:37--6:37--6:37--6:37--6:38--6:38--
light rain
light rain
light rain
light rain
rain showers
part cloud
light rain
light rain
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
23133-11-------------
Temp. °C222121212024232225252327272429292632322933
Feels °C (?)222323232125242326262527272529292732323134
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  • 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 de Guaratiba Surf forecast

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

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