Surf Forecast Surf Report
Grumari surf break

Grumari surfForecast / Rio de Janeiro / Brazil

information circle12 Day Weather and Surf, issued 8 am Sunday 15 Jun 2025 -03
Forecast update in hr  min  s Forecast update imminent
Grumari surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Grumari sea temperature is
22.5° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Grumari this week:

The surf forecast for Grumari over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jun 15) at 6PM. The primary swell is predicted to be 1.7m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Grumari in the next 12 days are 1.7m 14s and forecast to arrive on Sunday (Jun 15) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 8s period and expected on Wednesday (Jun 18) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Sun 15th Jun)5.5ft (1.7m) 14s
Best Surf 6PM (Sun 15th Jun)5.5ft (1.7m) 14s
Most Powerful 6PM (Sun 15th Jun)5.5ft (1.7m) 14s

Table - best surf conditions forecast for Grumari over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.3
SSE
1.7
SSE
1.5
SSE
1.1
SSE
1
SSE
0.9
SSE
0.7
SSE
1
ESE
0.5
SSE
1.2
ESE
1.3
ESE
0.2
SSE
0.2
SSE
0.2
SSW
0.2
S
0.1
S
0.1
S
0.1
S
0.3
SSW
0.4
SSW
0.4
SSW
0.9
SSW
0.9
SSW
0.7
SSW
0.7
S
0.6
S
0.5
S
0.2
SSE
0.2
SSE
0.3
SSE
0.6
S
0.7
SSW
0.6
SSW
0.7
SSW
0.6
SSW
0.9
SSW
Period(s) (?)141514131312128139812119811101087988887713137799111111
Wave
Graph
(?)Metric surfscale
Energy (?)110812408264373392061392831043123051519131134321284610292716947412326164210268149116225
Wind
(km/h)
15
N
15
NE
15
N
10
N
10
SE
5
NNW
10
NNE
10
E
10
NNE
10
N
10
ENE
10
N
10
N
10
ENE
10
N
15
N
10
NE
15
N
10
WNW
15
SW
10
W
5
N
15
ESE
10
NE
10
NE
20
E
10
NNE
15
N
25
SW
10
W
10
WNW
10
SW
5
NNE
10
NNE
15
E
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
onoffcross-
off
crosscross-
off
cross-
off
crosscross-
off
offcrossoffcross-
off
cross-
off
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
on
glasscross-
off
crosscross-
off
High Tide
/ height (m)
5:54PM
1.00
5:27AM
0.99
6:48PM
0.95
6:18AM
0.96
7:53PM
0.91
7:21AM
0.92
9:17PM
0.88
8:45AM
0.90
10:37PM
0.87
10:28AM
0.92
11:32PM
0.87
11:56AM
0.98
12:12AM
0.86
1:01PM
1.05
12:47AM
0.87
1:54PM
1.10
1:21AM
0.90
2:39PM
1.12
1:56AM
0.93
3:20PM
1.12
2:33AM
0.98
3:57PM
1.08
Low Tide
/ height (m)
12:08PM
0.12
12:44AM
0.47
1:02PM
0.16
1:40AM
0.50
2:01PM
0.20
2:41AM
0.51
3:06PM
0.24
3:46AM
0.48
4:15PM
0.27
4:50AM
0.42
5:26PM
0.29
5:50AM
0.34
6:34PM
0.31
6:44AM
0.24
7:35PM
0.32
7:35AM
0.14
8:28PM
0.35
8:22AM
0.06
9:14PM
0.38
9:08AM
0.01
9:56PM
0.41
9:53AM
-0.01
10:34PM
0.45
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Sunrise6:31--6:31--6:33--6:33--6:33--6:33--6:33--6:33--6:33--6:33--6:35--6:35--
Sunset-5:15--5:15--5:15--5:15--5:15--5:16--5:16--5:16--5:16--5:17--5:17--5:17-
clearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearpart cloudpart cloudcloudcloudpart cloudclearclearclear
Rain (mm)
------------------------------------
Temp. °C232522252421242624262825272924283025232220232221252623302322232322272926
Feels °C (?)212320252322242524262725272925272924222221232222252524292223242524272826

Short Range Forecast: Mostly dry. Warm (max 26°C on Tue afternoon, min 17°C on Sun morning). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 30°C on Fri afternoon, min 20°C on Wed night). Wind will be generally light.

Days 6-9 Weather Summary Mostly dry. Warm (max 26°C on Mon afternoon, min 18°C on Sat night). Wind will be generally light.

Long Range Forecast: Mostly dry. Warm (max 30°C on Tue morning, min 20°C on Tue night). Wind will be generally light.

  • 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 Grumari Surf forecast

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