Praia das Conchas surfForecast / Rio de Janeiro / Brazil

information circle12 Day Weather and Surf, issued 2 am Friday 12 Dec 2025 -03
Forecast update in hr  min  s Forecast update imminent
Praia das Conchas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Praia das Conchas sea temperature is
25.9° C
(Which is 1.2°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Praia das Conchas this week:

The surf forecast for Praia das Conchas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 13) at 9AM. The primary swell is predicted to be 1.4m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Praia das Conchas in the next 12 days are 2.5m 13s and forecast to arrive on Friday (Dec 12) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 8s period and expected on Tuesday (Dec 16) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Sat 13th Dec)4.5ft (1.4m) 11s
Best Surf 3AM (Fri 19th Dec)4.5ft (1.4m) 12s
Most Powerful 9AM (Fri 12th Dec)8ft (2.5m) 13s

Table - best surf conditions forecast for Praia das Conchas over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 40mm), heaviest during Sat night. Warm (max 27°C on Fri morning, min 22°C on Sat night). Winds decreasing (fresh winds from the SW on Sat morning, calm by Sun morning).

Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Wed morning. Warm (max 28°C on Mon morning, min 22°C on Wed night). Winds increasing (calm on Mon morning, fresh winds from the S by Wed morning).

Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
1
2
0
2
0
1
1
1
0
1
0
0
0
0
0
1
0
0
2
Swell
Height Map
Wave Height (m) & direction (?)
2.5
SSW
2.2
SSW
1.7
SSW
1.4
SSW
1.3
SSW
1.1
SSW
0.9
S
0.8
S
0.7
S
0.4
SSE
0.5
S
0.5
S
0.3
SSE
0.4
SSE
0.4
SSE
1.7
SSW
2
S
1.9
SSE
1.9
SSE
1.3
SSW
1.4
SSW
Period(s) (?)13121211101010101010101010101067871112
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2081150779142733125515812392365250213439201411393397382505
Wind
(km/h)
20
NE
20
ESE
20
NE
15
WSW
20
SSW
5
NW
25
NNE
5
SSE
10
NNE
5
SW
15
ESE
10
NNE
10
WSW
25
SW
25
W
30
S
25
S
15
SSE
15
SE
15
SSE
5
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
crosscross-
off
crossglasscross-
off
glasscross-
off
glassoncross-
off
cross-
off
crosscross-
off
cross-
on
cross-
on
onononcross-
on
High Tide
/ height (m)
9:25AM
0.75
8:38PM
0.78
10:23AM
0.77
10:28PM
0.80
11:08AM
0.80
11:37PM
0.85
11:46AM
0.82
12:29AM
0.90
12:22PM
0.85
1:11AM
0.95
12:54PM
0.87
1:49AM
0.99
1:26PM
0.89
2:24AM
1.02
Low Tide
/ height (m)
2:56PM
0.51
3:33AM
0.36
4:05PM
0.45
4:39AM
0.38
5:04PM
0.37
5:36AM
0.37
5:53PM
0.28
6:26AM
0.36
6:34PM
0.20
7:09AM
0.34
7:13PM
0.14
7:48AM
0.33
7:49PM
0.08
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Sunrise4:56--4:56--4:56--4:56--4:56--4:56--4:58--
Sunset-6:25--6:27--6:28--6:28--6:29--6:29--6:30-
clear
clear
part cloud
light rain
thunderstorm
heavy rain
cloud
light rain
rain showers
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
part cloud
rain showers
rain showers
part cloud
cloud
cloud
light rain
Rain (mm)
---3422-56-21-2-51---5
Temp. °C272725272423252424282725272625242423232222
Feels °C (?)262727302726302827312929302726232122222225
  • 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 Praia das Conchas Surf forecast

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

Praia das Conchas is 4 km (2 miles) from the city of Cabo Frio. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Cabo Frio. Cabo Frio has rooms for a wide range of budgets as well as car hire and transport links.

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