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Surf Forecasts:

Ilha surfForecast / São Paulo / Brazil

information circle12 Day Weather and Surf, issued 8 pm Wednesday 17 Sep 2025 -03
Forecast update in hr  min  s Forecast update imminent
Ilha surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ilha sea temperature is
20.9° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Ilha this week:

The surf forecast for Ilha over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 3AM. The primary swell is predicted to be 1.6m and 12s period with a secondary swell of 0.5m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Ilha in the next 12 days are 1.6m 12s and forecast to arrive on Thursday (Sep 18) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Sep 20) at 9PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 18th Sep)5ft (1.6m) 12s
Best Surf 3AM (Thu 18th Sep)5ft (1.6m) 12s
Most Powerful 3AM (Thu 18th Sep)5ft (1.6m) 12s

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

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

Short Range Forecast Light rain (total 3mm), mostly falling on Wed night. Warm (max 22°C on Sat afternoon, min 20°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 16mm), heaviest on Mon afternoon. Warm (max 26°C on Sun night, min 18°C on Mon night). Winds increasing (calm on Sun morning, strong winds from the SW by Sun night).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wed
24
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
3
2
1
2
0
0
1
0
0
1
1
1
0
1
0
0
1
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
SE
1.6
SE
1.4
SE
1.1
SE
0.9
SE
0.8
SE
0.8
SE
0.9
ESE
0.8
ESE
0.8
ESE
0.7
ESE
0.7
ESE
0.7
ESE
0.8
ESE
0.8
ESE
1.2
S
1.9
S
1.2
S
1.1
SSE
1.5
SSE
1.3
SSE
Period(s) (?)1211101198899989891058881010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)497579428286123808214899846465629810767513205157458385
Wind
(km/h)
5
S
10
WSW
15
SSW
5
WNW
10
SSW
10
SE
10
W
5
SSW
10
E
10
W
0
N
5
ESE
15
ENE
5
NNW
10
SSE
20
SSW
10
SSW
5
SSE
15
ESE
25
SE
20
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscrosscross-
on		cross-
off		cross-
on		cross-
on		cross-
off		cross-
on		crosscross-
off		glassglasscrossglassoncross-
on		cross-
on		oncross-
on		cross-
on		cross-
on
High Tide
/ height (m)
12:40AM
0.90
1:49PM
1.12
1:02AM
1.04
1:59PM
1.15
1:28AM
1.17
2:13PM
1.18
1:55AM
1.25
2:30PM
1.20
2:23AM
1.30
2:49PM
1.20
2:50AM
1.32
3:08PM
1.18
3:18AM
1.30
3:27PM
1.15
Low Tide
/ height (m)
6:58AM
0.13
7:31PM
0.42
7:33AM
0.05
7:53PM
0.34
8:03AM
0.01
8:15PM
0.27
8:30AM
0.01
8:36PM
0.22
8:55AM
0.04
8:56PM
0.18
9:19AM
0.09
9:16PM
0.15
9:41AM
0.17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wed
24
Sunrise-5:58--5:58--5:56--5:56--5:54--5:52--5:52-
Sunset--5:59--5:59--6:00--6:00--6:00--6:00--6:00
rain showers
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
rain showers
cloud
mod rain
rain showers
cloud
part cloud
clear
part cloud
cloud
Rain (mm)
3-----------1-69-----
Temp. °C212121212021202122222424262324231920202020
Feels °C (?)222120212022212224232426252426261819171516
  • 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 Ilha (calm at Santos wx 11 km from Ilha). A 2.0m groundswell from the SSE

    1 hour 9 minutes ago Ilha
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<
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1 h 9 min ago

0 km/h
SW
Clean
Please reload the page to see if there are any updates.

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 Ilha 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 Ilha at:
surf-forecast.com

Information about the Ilha Surf forecast

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

Are you planning a holiday in São Paulo? If you are looking for accommodation near Ilha, camping, hotels and holiday cottages in São Paulo, consider staying in Praia Grande which is 19 km (12 miles) away. Other places in and around São Paulo where you can find information about places to rent, and car hire include Bertioga which is 19 km (12 miles) away, Guaruja, Cubatao and Santos.

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