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Surf Forecasts:

Mongagua surf break

Mongagua surfForecast / São Paulo / Brazil

information circle12 Day Weather and Surf, issued 8 pm Thursday 28 Aug 2025 -03
Forecast update in hr  min  s Forecast update imminent
Mongagua surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mongagua sea temperature is
20.2° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Mongagua this week:

The surf forecast for Mongagua over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 29) at 12AM. The primary swell is predicted to be 0.6m and 11s period with a secondary swell of 0.6m and 6s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mongagua in the next 12 days are 2.5m 9s and forecast to arrive on Thursday (Sep 04) at 3AM. Winds are predicted to be offshore at the time the swell arrives.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 29th Aug)2ft (0.6m) 11s
Best Surf 3AM (Wed 3rd Sep)7.5ft (2.3m) 9s
Most Powerful 3AM (Thu 4th Sep)8ft (2.5m) 9s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 2mm), mostly falling on Fri afternoon. Warm (max 22°C on Sat morning, min 18°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 26°C on Wed morning, min 19°C on Sun night). Wind will be generally light.

Friday
29
Saturday
30
Sunday
31
Monday
01
Tuesday
02
Wednesday
03
Thu
04
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
0
0
1
1
0
1
1
0
2
2
0
2
2
0
3
3
2
4
3
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
S
0.6
S
0.7
S
0.6
S
0.5
S
0.8
ESE
1.1
E
1.2
ESE
1.2
ESE
1.7
E
1.6
E
1.6
E
1.8
E
1.7
ESE
1.7
ESE
2.1
ESE
1.8
ESE
2.2
E
2.1
E
1.8
ESE
1.6
ESE
Period(s) (?)11111110106677777788899999
Wave
Graph
(?)Metric surfscale
Energy (?)129137169101817212613516828027427134033538257654912571269563406
Wind
(km/h)
5
W
10
SW
10
S
5
WSW
0
SW
10
SSE
5
NE
5
SSE
15
ESE
5
E
5
ESE
20
E
5
NE
5
E
15
ESE
0
NE
5
ENE
15
E
5
NNE
5
NNE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
on		cross-
on		glassglassoncross-
off		glasscross-
on		glassglasscross-
on		cross-
off		glasscross-
on		glassglasscross-
on		cross-
off		glasscross-
on
High Tide
/ height (m)
5:20AM
1.13
5:21PM
1.02
6:02AM
1.01
5:54PM
0.92
7:02AM
0.88
1:37PM
0.74
6:46PM 1:11AM
0.81 0.57
9:21AM
0.81
1:04PM
0.86
8:45PM
0.73
1:05PM
0.99
12:09AM
0.84
1:16PM
1.12
12:39AM
0.99
1:35PM
1.24
Low Tide
/ height (m)
10:34PM
0.30
10:51AM
0.46
10:55PM
0.36
11:00AM
0.58
11:16PM
0.44
10:57AM
0.70
3:30PM
0.73
11:40PM
0.56
3:45AM 10:01AM
0.53 0.81
5:29PM
0.65
5:20AM
0.42
6:23PM
0.52
6:17AM
0.27
7:02PM
0.41
7:01AM
0.12
Friday
29
Saturday
30
Sunday
31
Monday
01
Tuesday
02
Wednesday
03
Thu
04
Sunrise-6:20--6:18--6:18--6:16--6:16--6:15--6:13-
Sunset--5:53--5:53--5:53--5:54--5:54--5:54--5:55
part cloud
cloud
light rain
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
--2------------------
Temp. °C192120192221192222202322202423202625232826
Feels °C (?)202221212322212322222322222524222625242727
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for São Paulo

  1. weather stationWind Update Continuing clean conditions at Mongagua (calm at Santos wx 22 km from Mongagua). 0.7m 6s windswell from the S with a 0.6m 11s groundswell, also from the S and a 0.4m 8s swell, also from the E. 3 swells combining to make bigger set waves.

    1 hour 16 minutes ago Mongagua
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22 km away, 1 h 16 min ago

0 km/h
N
0.0
20.2
Air / Water (°C)
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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mongagua surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Mongagua at:
surf-forecast.com

Information about the Mongagua Surf forecast

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

Mongagua is 12 km (7 miles) from Sao Vicente. If you plan a holiday in São Paulo, look for hotels and other accommodation in Sao Vicente. Sao Vicente has rooms for a wide range of budgets as well as car hire and transport links.

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