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Surf Forecasts:
Maresias surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 2 am Monday 18 May 2026 -03Forecast update in hr min s Forecast update imminent
Maresias surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Maresias sea temperature is
24.0° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Maresias today?
The current surf forecast for Maresias at 10AM is: 0.8m 10s primary swell from a South direction and 0.2m 16s secondary swell from a South direction, 0.4m 3s secondary swell from a West-southwest direction (forecast issued at 02:00am May 18). The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 2.5ft (0.8m) | 10s |
| Afternoon (18 May) | 2.5ft (0.7m) | 10s |
| Evening (18 May) | 1.5ft (0.4m) | 15s |
Table - waves today at Maresias. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 26mm), heaviest during Mon afternoon. Warm (max 26°C on Mon morning, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 15 | SSE 15 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | S 8 | S 8 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | |
172 | 131 | 125 | 125 | 92 | 90 | 74 | 72 | 203 | 376 | 394 | 427 | 302 | 569 | 794 | 1769 | 2480 | 3138 | 2479 | 1822 | 1608 | 1245 | 1018 | 875 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross | cross-off | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | glassy | cross-on | cross-on | on | on | |
High Tide | 2:53AM0.93m | 3:58PM1.13m | 3:22AM0.92m | 4:42PM1.03m | 3:55AM0.91m | 5:29PM0.92m | ||||||||||||||||||
Low Tide | 9:48AM0.07m | 10:52PM0.47m | 10:31AM0.10m | 11:39PM0.58m | 11:22AM0.15m | |||||||||||||||||||
 |  | |  |  |  |  | | | | |  | | | | | | | |  | | | | | |
 | — | — | 6:30 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — |
 | — | — | — | — | — | 5:25 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — |
— | — | — | — | — | 1 | 2 | 2 | 2 | 2 | 1 | 1 | — | 1 | 1 | 1 | 2 | 1 | 1 | 1 | — | 1 | 1 | 1 | |
Temp °C | 22 | 22 | 22 | 24 | 26 | 22 | 22 | 20 | 20 | 20 | 19 | 19 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 |
24 | 24 | 25 | 27 | 28 | 23 | 24 | 21 | 21 | 21 | 19 | 20 | 21 | 20 | 20 | 21 | 20 | 20 | 21 | 21 | 22 | 22 | 23 | 22 | |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 14 | S 13 | S 13 | S 8 | S 8 | S 8 | S 8 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 |
 kJ | 172 | 131 | 125 | 125 | 92 | 90 | 65 | 45 | 70 | 55 | 55 | 316 | 302 | 364 | 412 | 1769 | 2480 | 3138 | 2479 | 1822 | 1608 | 1245 | 1018 | 875 |
Swell 2 Height (m) Direction Period (s) | S 18 | E 5 | ESE 5 | S 16 | S 16 | SSE 16 | SSE 15 | SSE 15 | E 7 | SSE 16 | S 16 | S 13 | SSE 20 | SSE 19 | S 18 | S 8 | SE 7 | SE 7 | SE 7 | SE 7 | SE 6 | SE 6 | SE 6 | ESE 6 |
| kJ | 6 | 2 | 2 | 21 | 46 | 50 | 74 | 72 | 4 | 50 | 46 | 53 | 131 | 391 | 794 | 316 | 109 | 89 | 63 | 52 | 47 | 39 | 39 | 33 |
Swell 3 Height (m) Direction Period (s) | SE 12 | E 7 | S 18 | ESE 5 | SE 5 | E 7 | E 7 | E 7 | — | E 7 | E 7 | SSE 16 | SSE 15 | S 15 | S 14 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | — | — | — |
| kJ | 5 | 1 | 6 | 2 | 1 | 4 | 4 | 4 | — | 4 | 4 | 51 | 76 | 112 | 188 | 4 | 4 | 4 | 4 | 4 | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 7 | — | WSW 2 | WSW 3 | WSW 3 | SW 4 | SW 5 | SW 5 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | — | S 8 | SE 7 | — | — | — | — | — | — | — | — | — |
| kJ | 12 | — | 1 | 2 | 2 | 12 | 25 | 23 | 203 | 376 | 394 | 427 | — | 569 | 143 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 4 | 0 | 8 | 58 | 26 | 13 | 8 | 13 | 13 | 8 | 13 | 44 | 26 | 26 | 19 | 25 | 13 | 0 | 26 | 26 | 4 | 4 |
Best forecast wave conditions in São Paulo | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
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