Beach forecast for Maresias Beach
Today, Thursday, October 29, 2026 · local time (GMT-3) · São Paulo, Brazil Today, Thu, Oct 29 · GMT-3- Swimming
- Use care · 3.0 ft
- Water
- 74 °F · nice
- Max UV
- 5 · SPF 30
- Wind
- 1 mph
Today, Thursday, October 29, it's not a beach day in Maresias Beach (0/10). The best day this week is Tuesday, November 3, at 8/10.
Beach forecast for the next 7 days
| Day | Rating | Best hours | Swimming | Water | UV |
|---|---|---|---|---|---|
| Today | 0Not a beach day | Not today | Use care · 3.0 ft | 74 °F | 5 |
| Fri 30 | 4Poor beach day | 6:00–8:00 am | Calm · 2.6 ft | 74 °F | 11 |
| Sat 31 | 0Not a beach day | No good window | Use care · 3.8 ft | 74 °F | 5 |
| Sun 1 | 1Not a beach day | No good window | Use care · 3.0 ft | 75 °F | 10 |
| Mon 2 | 6Fair beach day | 7:00 am–12:00 pm | Calm · 2.4 ft | 76 °F | 7 |
| Tue 3 | 8Good beach day | 1:00–6:00 pm7:00 am–12:00 pm | Calm · 2.2 ft | 77 °F | — |
| Wed 4 | 6Fair beach day | 6:00–10:00 am | Calm · 1.7 ft | 78 °F | — |
Each rating comes from sun, temperature, rain, wind, waves, UV, water temperature and, where there is one, the tide.
Today in detail
- Feels like 80 °F: pleasant
- Almost no wind
- UV 5 (moderate): SPF 30 sunscreen
- Water at 74 °F (nice)
- Cloudy (100% cloud cover)
- Rain (0.86 in)
Today, hour by hour
- Swimming Use care · 3.0 ft
3.0 ft waves every 8 s: swim with care and stay where you can stand. Moderate rip current risk. Always follow the lifeguard's flags.
- Water 74 °F
Nice for swimming.
- Sun & sunscreen UV 5 · SPF 30
Max UV 5 (moderate): SPF 30 sunscreen, reapplied every 2 hours.
- Wind 1 mph
Almost no wind.
- Tide & sand
We don't show the tide for Maresias Beach, so it doesn't count in the rating.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority.
Today, hour by hour
| Time | Rating | Sky | Feels like | Wind | Waves | UV |
|---|---|---|---|---|---|---|
| 6:00 am | 0 | Light rain | 74 °F | 1 mph | 3.0 ft | 0 |
| 7:00 am | 0 | Heavy drizzle | 75 °F | 1 mph | 3.0 ft | 1 |
| 8:00 am | 0 | Heavy drizzle | 77 °F | 0 mph | 3.0 ft | 2 |
| 9:00 am | 0 | Heavy drizzle | 78 °F | 0 mph | 3.0 ft | 4 |
| 10:00 am | 0 | Drizzle | 79 °F | 0 mph | 2.9 ft | 5 |
| 11:00 am | 0 | Drizzle | 79 °F | 1 mph | 2.9 ft | 4 |
| 12:00 pm | 0 | Drizzle | 80 °F | 1 mph | 2.8 ft | 3 |
| 1:00 pm | 0 | Light rain | 80 °F | 1 mph | 2.8 ft | 2 |
| 2:00 pm | 0 | Light rain | 80 °F | 1 mph | 2.8 ft | 1 |
| 3:00 pm | 0 | Light rain | 80 °F | 0 mph | 2.8 ft | 1 |
| 4:00 pm | 0 | Rain | 80 °F | 0 mph | 2.8 ft | 0 |
| 5:00 pm | 0 | Rain | 78 °F | 0 mph | 2.7 ft | 0 |
Beach hours only: from one hour after sunrise to half an hour before sunset.
Beaches near Maresias Beach
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Praia de Paúba 1.3 mi · SE
- Praia de Santiago 2.2 mi · SE
- Praia Brava 2.6 mi · W
- Nudity allowed
- Praia do Toque-Toque Pequeno 2.9 mi · SE
- Praia de Boiçucanga 3.9 mi · W
- Parking
- Praia Calhetas 4.1 mi · SE
- Praia do Toque-Toque Grande 4.7 mi · SE
- Praia Camburi 5.3 mi · W
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
Webcams near Maresias Beach
Webcams provided by windy.com — add a webcam
How we rate a beach day
We rate every beach hour from 0 to 10 with simple, fixed rules:
- Adds: sunshine (up to 3 points, fewer with more clouds), warmth (up to 4, from the feels-like temperature; ideal between 81 °F and 91 °F), a calm sea (1), water at 70 °F or warmer (1; from 64 °F, half) and low or mid tide (1: more sand). Anything without data is left out and the rest is scaled to 10.
- Takes away: cold (feels-like below 64 °F, 1 to 4 points), rain (half a point if likely, up to 6 if it rains; thunderstorms, 8), wind from force 4, about 12 mph (1 to 6 points; half a point more if offshore, which blows inflatables out to sea, or onshore, which churns the water), waves (1 to swim with care, 4 if dangerous, 1 more for high rip current risk), very high UV (half a point; extreme, 1), water below 59 °F (1) and spring high tides (1: little sand left).
- Swimming: calm, use care (waves from 2.6 ft, or long swell) or dangerous (from 6.6 ft, or 4.9 ft with a long period), based on how much of the wave reaches this shore given the way it faces. In the U.S., today's and tomorrow's rip current risk comes from the National Weather Service surf zone forecast when it issues one; otherwise we estimate it from the waves.
- Best windows: runs of 2 to 5 hours rated 4 or more and close to the best hour, at least one hour apart.
- Day rating: the average of the best window; a 2-hour window keeps 85% of it and a 3-hour window 95%.
Today, in the best window: sun 0 of 3, warmth 3 of 4, calm sea 0 of 1 and water 1 of 1; minus rain 3 and waves 1; short window: the rating keeps 85%.
It's a guide, not a guarantee: weather changes and every beach is different. Always follow the lifeguard's flags.
Questions about the beach in Maresias Beach
Is it a beach day in Maresias Beach today?
Not a beach day: 0/10. No good beach time today.
What are the swimming conditions in Maresias Beach today?
3.0 ft waves every 8 s: swim with care and stay where you can stand. Moderate rip current risk. Always follow the lifeguard's flags.
How warm is the water in Maresias Beach?
About 74 °F today: nice. That's the sea surface temperature offshore; it can differ a little at the shoreline.
How much sun protection do I need in Maresias Beach today?
UV reaches 5 (moderate): SPF 30 sunscreen, sunglasses and a hat.
What about tomorrow? Will it be a beach day in Maresias Beach?
Tomorrow, Friday, October 30: a poor beach day (4/10), best from 6:00 am to 8:00 am.
What beaches are near Maresias Beach?
Praia de Paúba (1.3 mi), Praia de Santiago (2.2 mi), Praia Brava (2.6 mi), Praia do Toque-Toque Pequeno (2.9 mi) and Praia de Boiçucanga (3.9 mi). See below for amenities and water quality.
Are there jellyfish or sargassum today?
We don't know: there's no open data on jellyfish, sargassum or closures for each beach. Ask the lifeguard, check the flags or the local beach authority's website.
How is the rating worked out?
From the hourly forecast: sun and clouds, feels-like temperature, rain, wind (and whether it blows onshore or offshore), waves and their period, UV, water temperature and, where there is one, the tide. Each factor adds or takes away a fixed number of points and the rating sums them up out of 10.
More about Maresias Beach today
Learn more
Our own calculation, using the Open-Meteo forecast (ECMWF, NOAA GFS, Météo-France, Copernicus Marine and CAMS, CC BY 4.0) and the sun from astronomy-engine.