Beach forecast for Cajueiro da Praia
Today, Wednesday, October 28, 2026 · local time (GMT-3) · Piauí, Brazil Today, Wed, Oct 28 · GMT-3- Swimming
- Calm · 2.4 ft
- Water
- 84 °F · very warm
- Max UV
- 11 · SPF 50
- Low tide
- 10:48 am and 11:33 pm
Today, Wednesday, October 28, it's a good beach day in Cajueiro da Praia (7/10). The best hours are from 6:00 am to 9:00 am: beach weather, a calm sea and water at 83 °F, though with clouds and light offshore wind. The best day this week is Thursday, October 29, at 8/10.
Beach forecast for the next 7 days
| Day | Rating | Best hours | Swimming | Water | UV |
|---|---|---|---|---|---|
| Today | 7Good beach day | 6:00–9:00 am10:00 am–12:00 pm | Calm · 2.4 ft | 84 °F | 11 |
| Thu 29 | 8Good beach day | 6:00–9:00 am | Calm · 2.8 ft | 84 °F | 11 |
| Fri 30 | 8Good beach day | 6:00–10:00 am | Calm · 3.1 ft | 84 °F | 11 |
| Sat 31 | 6Fair beach day | 6:00–11:00 am1:00–5:00 pm | Use care · 2.7 ft | 84 °F | 12 |
| Sun 1 | 8Good beach day | 6:00–9:00 am10:00 am–1:00 pm | Calm · 3.0 ft | 84 °F | 11 |
| Mon 2 | 8Good beach day | 6:00–8:00 am | Calm · 3.0 ft | 84 °F | — |
| Tue 3 | 8Good beach day | 6:00–9:00 am | Calm · 3.2 ft | 83 °F | — |
Each rating comes from sun, temperature, rain, wind, waves, UV, water temperature and, where there is one, the tide.
Today in detail
5 good hours- Feels like 89 °F: beach weather
- Calm for swimming: 2.4 ft waves
- UV 4 (moderate): SPF 30 sunscreen
- Water at 83 °F (very warm)
- Cloudy (75% cloud cover)
- Light offshore wind (12 mph): it blows floats and inflatables out to sea
Today, hour by hour
- Swimming Calm · 2.4 ft
2.4 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 84 °F
Very warm: barely refreshing.
- Sun & sunscreen UV 11 · SPF 50
Max UV 11 (very high): SPF 50 sunscreen, reapplied every 2 hours. Seek shade 10:00 am–2:00 pm (very high UV).
- Wind 14 mph
Moderate onshore wind (14 mph).
- Tide & sand 11:33 pm
Low tide at 10:48 am and 11:33 pm: that's when there's the most sand. High tide at 4:43 am and 4:56 pm.
The best window, 6:00 am to 9:00 am, brings beach weather, a calm sea and water at 83 °F, though with clouds and light offshore wind. 10:00 am to 12:00 pm can also work, with a calm sea, water at 84 °F and low tide at 10:48 am, though with intense heat, light offshore wind and very high UV.
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 | 7 | Partly cloudy | 84 °F | 9 mph | 2.4 ft | 0 |
| 7:00 am | 7 | Partly cloudy | 86 °F | 10 mph | 2.4 ft | 1 |
| 8:00 am | 7 | Overcast | 89 °F | 12 mph | 2.4 ft | 4 |
| 9:00 am | 5 | Overcast | 93 °F | 13 mph | 2.4 ft | 6 |
| 10:00 am | 6 | Partly cloudy | 96 °F | 12 mph | 2.5 ft | 9 |
| 11:00 am | 6 | Mainly clear | 100 °F | 10 mph | 2.6 ft | 11 |
| 12:00 pm | 1 | Mainly clear | 103 °F | 8 mph | 2.7 ft | 11 |
| 1:00 pm | 1 | Light drizzle | 102 °F | 6 mph | 2.9 ft | 9 |
| 2:00 pm | 3 | Light drizzle | 98 °F | 9 mph | 3.0 ft | 6 |
| 3:00 pm | 3 | Light drizzle | 93 °F | 13 mph | 3.2 ft | 3 |
| 4:00 pm | 5 | Mainly clear | 90 °F | 14 mph | 3.4 ft | 1 |
Beach hours only: from one hour after sunrise to half an hour before sunset.
Beaches near Cajueiro da Praia
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Praia das Pedras 0.6 mi · SE
- Praia João Sotero Veras 5.0 mi · NE
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 Cajueiro da Praia
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 0.7 of 3, warmth 4 of 4, calm sea 1 of 1, water 1 of 1 and tide 0.7 of 1; minus wind 0.5; short window: the rating keeps 95%.
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 Cajueiro da Praia
Is it a beach day in Cajueiro da Praia today?
A good beach day: 7/10. Best from 6:00 am to 9:00 am, with beach weather, a calm sea and water at 83 °F, though with clouds and light offshore wind.
What are the swimming conditions in Cajueiro da Praia today?
2.4 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
How warm is the water in Cajueiro da Praia?
About 84 °F today: very warm. That's the sea surface temperature offshore; it can differ a little at the shoreline.
How much sun protection do I need in Cajueiro da Praia today?
UV reaches 11 (very high): SPF 50 sunscreen, sunglasses and a hat, and seek shade from 10:00 am to 2:00 pm.
When is low tide in Cajueiro da Praia?
Today low tide is at 10:48 am and 11:33 pm: that's when there's the most sand. High tide is at 4:43 am and 4:56 pm.
What about tomorrow? Will it be a beach day in Cajueiro da Praia?
Tomorrow, Thursday, October 29: a good beach day (8/10), best from 6:00 am to 9:00 am.
What beaches are near Cajueiro da Praia?
Praia das Pedras (0.6 mi) and Praia João Sotero Veras (5.0 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 Cajueiro da Praia today
Learn more
Our own calculation, using the Open-Meteo forecast (ECMWF, NOAA GFS, Météo-France, Copernicus Marine and CAMS, CC BY 4.0), the tide from Luís Correia (TICON-4) and the sun from astronomy-engine. Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data