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Surf Forecasts:
Maresias surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 2 pm 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 6PM is: 0.4m 15s primary swell from a South-southeast direction and 0.6m 10s secondary swell from a South direction, 1.0m 5s secondary swell from a Southwest direction (forecast issued at 02:00pm May 18). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | - | - |
| Afternoon (18 May) | 2ft (0.6m) | 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 21mm), heaviest during Mon night. Warm (max 22°C on Mon afternoon, min 19°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 10 | S 10 | SSE 15 | SSE 15 | SW 9 | SSW 8 | SSW 8 | SSW 8 | S 8 | SSE 19 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 15 | S 15 | S 16 | |
92 | 66 | 74 | 72 | 203 | 298 | 385 | 385 | 248 | 391 | 794 | 1769 | 2709 | 2609 | 2479 | 1822 | 1608 | 1245 | 1018 | 875 | 891 | 1212 | 1589 | 2534 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross | cross-on | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross-on | cross-on | glassy | glassy | glassy | on | on | |
High Tide | 3:58PM1.13m | 3:22AM0.92m | 4:42PM1.03m | 3:55AM0.91m | 5:29PM0.92m | 4:32AM0.90m | ||||||||||||||||||
Low Tide | 9:48AM0.07m | 10:52PM0.47m | 10:31AM0.10m | 11:39PM0.58m | 11:22AM0.15m | 00:31AM0.66m | ||||||||||||||||||
 |  |  | | | | |  | | |  | | | | | | | | |  | | | | | |
 | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:31 | — |
 | — | 5:25 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | 5:24 |
— | — | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | |
Temp °C | 23 | 22 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 |
24 | 23 | 22 | 21 | 21 | 20 | 21 | 22 | 21 | 21 | 21 | 20 | 20 | 20 | 22 | 22 | 21 | 21 | 22 | 23 | 21 | 21 | 21 | 20 | |
Swell 1 Height (m) Direction Period (s) | 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 | S 13 | S 15 | S 15 | S 16 |
 kJ | 92 | 66 | 65 | 65 | 70 | 55 | 55 | 294 | 248 | 255 | 255 | 1769 | 2709 | 2609 | 2479 | 1822 | 1608 | 1245 | 1018 | 875 | 891 | 1212 | 1589 | 2534 |
Swell 2 Height (m) Direction Period (s) | SSE 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 6 | SE 6 | SE 6 | SE 6 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 7 |
| kJ | 51 | 50 | 74 | 72 | 4 | 50 | 46 | 83 | 131 | 391 | 794 | 256 | 45 | 57 | 63 | 58 | 56 | 45 | 38 | 32 | 22 | 18 | 15 | 4 |
Swell 3 Height (m) Direction Period (s) | 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 8 | E 7 | E 8 | — | — |
| kJ | 1 | 1 | 1 | 1 | — | 4 | 4 | 51 | 76 | 112 | 188 | 4 | 4 | 4 | 4 | — | — | — | — | 5 | 4 | 4 | — | — |
Wind waves Height (m) Direction Period (s) | WSW 3 | SW 4 | SW 5 | SW 5 | SW 9 | SSW 8 | SSW 8 | SSW 8 | — | SSW 8 | — | — | — | SE 7 | — | — | — | — | — | — | — | SE 6 | SE 6 | — |
| kJ | 7 | 43 | 42 | 31 | 203 | 298 | 385 | 385 | — | 143 | — | — | — | 99 | — | — | — | — | — | — | — | 38 | 30 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 66 | 26 | 58 | 8 | 26 | 48 | 48 | 26 | 26 | 26 | 13 | 0 | 0 | 8 | 0 | 8 | 22 | 26 | 26 | 0 | 0 | 0 | 44 | 19 |
Best forecast wave conditions in São Paulo | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
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