Maresias surf forecast & sea temperature
Updated 12 Oct, 14:00 UTC

Current conditions
Right now at Maresias: 6 kts SW, gusts 13, 1.0 m waves, water 24 °C — good surfing waves.
7-day forecast
| Sun 11 | Mon 12 | Tue 13 | Wed 14 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 21 | 00 | 03 | 06 | 09 | 12 | 15 | 18 | 21 | 00 | 03 | 06 | 09 | 12 | 15 | 18 | 21 | 00 | 03 | 06 | 09 | 12 | 15 | 18 | |
| Wind | 1 | 0 | 5 | 8 | 6 | 5 | 4 | 1 | 3 | 4 | 4 | 4 | 2 | 4 | 8 | 7 | 5 | 6 | 4 | 4 | 2 | 5 | 3 | 5 |
| Gusts | 5 | 5 | 12 | 16 | 19 | 14 | 14 | 7 | 6 | 11 | 12 | 8 | 10 | 12 | 20 | 15 | 11 | 12 | 10 | 8 | 7 | 14 | 13 | 11 |
| Direction | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ |
| Waves | 0.9 | 0.9 | 0.9 | 0.9 | 1.0 | 1.0 | 1.1 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.8 | 0.8 | 0.8 |
| Temperature | 22 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 20 | 20 | 25 | 29 | 28 | 24 | 23 | 23 | 23 | 22 | 29 | 28 | 25 | 23 |
| Rain (mm) | 4.3 | 1.3 | 1.1 | 1.1 | 2.9 | 2.9 | 0.7 | 0.1 | 0.1 | 0.1 | 0.1 | 0.4 | ||||||||||||
Times shown in local time · Weather data by Open-Meteo.com
🔒 Days 4–7 are Pro — The free plan shows the first 3 forecast days. Go Pro to see the whole week.
Tides (next 48 h)
Spot info
- Town: São Sebastião, São Paulo
- Water: Sea
- Sports: SurfSUP
- Best wind directions: NNWNNNE
A four-kilometre beach on the north coast of São Paulo state, backed by Atlantic forest, and the best-known surf beach near the city. South swells produce hollow, punchy beach-break peaks along its length, and it has hosted national and international contests. Weekends are busy with São Paulo surfers. Northerly land breezes clean it up in the morning.
No webcam here yet.
Maresias sea temperature
Today: 24 °C
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 28 | 29 | 28 | 26 | 25 | 23 | 22 | 21 | 23 | 23 | 25 | 27 |
Monthly mean sea surface temperature, 2023–2025.
Maresias weather by month
Biggest average waves: April, July and August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg wind (kts) | 4 | 4 | 4 | 4 | 5 | 4 | 5 | 5 | 5 | 6 | 5 | 5 |
| Days ≥12 kts | 1% | 1% | 0% | 1% | 0% | 2% | 4% | 6% | 12% | 3% | 2% | 1% |
| Waves (m) | 0.9 | 0.8 | 0.9 | 1.2 | 1.2 | 1.1 | 1.3 | 1.3 | 1.2 | 1.1 | 1.1 | 1.0 |
| Air high (°C) | 29 | 30 | 29 | 27 | 26 | 25 | 23 | 24 | 26 | 25 | 27 | 29 |
| Water (°C) | 28 | 29 | 28 | 26 | 25 | 23 | 22 | 21 | 23 | 23 | 25 | 27 |
Model averages, 2023–2025 (Open-Meteo). Wind is the daytime mean, 08:00–20:00; a day counts when it has 3 or more daytime hours at 12 knots or above.
Maresias FAQ
- Is there a beach webcam at Maresias?
- Not one we can show right now. This page has the 7-day wind and wave forecast for Maresias.
- What is the sea temperature at Maresias?
- Today the water is 24 °C. Over the year it runs from 21 °C in August to 29 °C in February (2023–2025 average).
- When is the best time to surf at Maresias?
- April, July and August have the biggest average waves, on the 2023–2025 average.
- What wind direction works at Maresias?
- It works best in NNW, N, NNE winds.