Murdeira tides today
- Tide now 3.0 ft ↑ rising · high 10:41 am (3.1 ft)
- Best time to fish 3:20–4:30 pm average day · 6/10
- Beach day 1:00–6:00 pm Fair beach day · 5/10
- Waves · water 5.2 ft · 81 °F moderate · 10.4 s from the north-northwest
- Wind · air 23 mph · 86 °F from the NE, gusts 33 · mainly clear
- Surf today 2.5–3.9 ft Good day · 7/10 · 6:06–10:00 am
- Sun 6:28 am–6:02 pm 11 h 34 min of daylight
- Moon 85% · 9:13 pm waning gibbous · rises at 9:13 pm
Today in Murdeira there are high tides at 10:41 am (3.1 ft) and 10:54 pm (3.5 ft) and low tides at 4:16 am and 4:18 pm. Tide coefficient 91. Right now the tide is rising toward the high tide at 10:41 am. The sun rises at 6:28 am and sets at 6:02 pm: 11 h 34 min of daylight. The moon is 85% illuminated (waning gibbous) and rises at 9:13 pm. Major solunar periods run from 2:01 am to 4:01 am and from 2:33 pm to 4:33 pm. The next spring tides arrive from November 9 to 11. The sea is moderate, with 5.2 ft waves. There's a fresh breeze from the northeast (23 mph). Mainly clear, 86 °F.
Fishing in Murdeira today
Best time to fish
Solunar activity today: medium- Low tide at 4:16 am
- Major period 2:01–4:01 am
- Steady pressure (29.94 inHg), moderate offshore wind (16 mph) and 5.1 ft waves
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 91 (spring tides)
Your day at a glance
The best window, 3:20 am to 4:00 am, combines the 4:16 am low tide and a major period, though with moderate wind. Also worth a try from 3:20 pm to 4:30 pm, with the 4:18 pm low tide and a major period, though with fresh wind. Also worth a try from 9:40 am to 10:20 am, with the 10:41 am high tide and moonset, though with fresh wind.
Species with the most records nearby: axillary seabream, sand steenbras, bonefish and common smooth-hound. What you can catch
Beach day in Murdeira
Is it a beach day?
- Sunny
- Feels like 87 °F: beach weather
- UV 6 (high): SPF 50 sunscreen
- Water at 81 °F (warm)
- Low tide at 4:18 pm: more sand
- Fresh offshore wind (23 mph): it blows floats and inflatables out to sea
Today, hour by hour
- Swimming Use care · 5.2 ft
5.2 ft waves every 10 s: swim with care and stay where you can stand. Moderate rip current risk. Always follow the lifeguard's flags.
- Water 81 °F
Warm: very pleasant.
- Sun & sunscreen UV 6 · SPF 50
Max UV 6 (high): SPF 50 sunscreen, reapplied every 2 hours.
- Wind 24 mph
Fresh offshore wind (24 mph): blowing sand. Skip the inflatables: offshore wind carries them out to sea.
- Tide & sand 4:18 pm
Low tide at 4:16 am and 4:18 pm: that's when there's the most sand. High tide at 10:41 am and 10:54 pm. Coefficient 91 (spring tides): little sand left at high tide.
The best window, 1:00 pm to 6:00 pm, brings sunshine, beach weather, water at 81 °F and low tide at 4:18 pm, though with fresh offshore wind and some waves.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days
Beaches near Murdeira
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Calheta Funda 2.1 mi · S
- Curral do Dadó 2.5 mi · S
- Costa da Fragata 4.8 mi · SE
- Restrooms
- Parking
- Praia da Fontona 5.2 mi · NW
- Praia de Santa Maria 6.1 mi · S
- Lifeguard
- Restrooms
- Showers
- Parking
- Praia António Sousa 6.1 mi · SE
- Restrooms
- Praia de Igrejinha 6.2 mi · SE
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 Murdeira
Webcams provided by windy.com — add a webcam
Tides in Murdeira
Today's high and low tides
- ▼ Low tide 4:16 am 0.5 ft
- ▲ Next high tide 10:41 am 3.1 ft · coef. 91
- ▼ Low tide 4:18 pm 0.6 ft
- ▲ High tide 10:54 pm 3.5 ft · coef. 86
↑ Rising The tide is rising. 42 min to high tide at 10:41 am.
Tide coefficient 91 for the 10:41 am high tide and 86 for the 10:54 pm high tide. Spring tides. The water rises and falls 3.0 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
2026 extremes: the highest tide of the year is on August 14 (3.9 ft) and the lowest, on April 19 (0.2 ft).
Semidiurnal: two high and two low tides a day, of similar height.
Heights above chart datum: the lowest astronomical tide (LAT), the zero of nautical charts in Europe. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. chart datum (LAT)
Tide coefficient and range in October
The biggest tides of the month came from October 10 to 11 (coefficient 101, 3.1 ft range). The smallest, on October 19 (coefficient 27, 1.1 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Thu 29 | 6:28 am · 6:02 pm | Low tide 4:16 am · 0.5 ft | High tide 10:41 am · 3.1 ft | Low tide 4:18 pm · 0.6 ft | High tide 10:54 pm · 3.5 ft | Coef. 91 | 85% | Major periods 2:01 am · 2:33 pm | Medium |
| Fri 30 | 6:29 am · 6:02 pm | Low tide 5:04 am · 0.6 ft | High tide 11:31 am · 2.8 ft | Low tide 5:00 pm · 0.8 ft | High tide 11:46 pm · 3.3 ft | Coef. 80 | 75% | Major periods 3:06 am · 3:38 pm | Medium |
| Sat 31 | 6:29 am · 6:01 pm | Low tide 5:59 am · 0.8 ft | High tide 12:30 pm · 2.6 ft | Low tide 5:49 pm · 1.1 ft | — | Coef. 66 | 65% | Major periods 4:09 am · 4:38 pm | Medium |
| Sun 1 | 6:29 am · 6:01 pm | High tide 12:48 am · 3.2 ft | Low tide 7:05 am · 1.0 ft | High tide 1:42 pm · 2.4 ft | Low tide 6:49 pm · 1.3 ft | Coef. 59 | Last quarter | Major periods 5:07 am · 5:34 pm | Medium |
| Mon 2 | 6:30 am · 6:01 pm | High tide 2:02 am · 3.1 ft | Low tide 8:33 am · 1.2 ft | High tide 3:08 pm · 2.4 ft | Low tide 8:11 pm · 1.5 ft | Coef. 48 | 42% | Major periods 6:01 am · 6:26 pm | Medium |
| Tue 3 | 6:30 am · 6:00 pm | High tide 3:22 am · 3.1 ft | Low tide 10:11 am · 1.2 ft | High tide 4:30 pm · 2.5 ft | Low tide 9:50 pm · 1.5 ft | Coef. 48 | 32% | Major periods 6:50 am · 7:13 pm | Medium |
| Wed 4 | 6:31 am · 6:00 pm | High tide 4:37 am · 3.1 ft | Low tide 11:21 am · 1.1 ft | High tide 5:34 pm · 2.8 ft | Low tide 11:09 pm · 1.3 ft | Coef. 58 | 22% | Major periods 7:36 am · 7:58 pm | Low |
▲ high tide · ▼ low tide · heights above chart datum (LAT). Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Where this tide comes from
Murdeira has no station of its own, so we use the tide at Palmeira (TICON-4), 5.9 mi away. On the open coast the difference is usually a few minutes and inches; inside estuaries, rivers and enclosed bays it can be much larger.
Station data attribution: 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
The sea at Murdeira
Sea stateSea state: moderate
The waves you may find
- Most commonMost common2.6 ft
- Significant5.2 ft
- Highest expectedHighest10 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 10 ft. Before heading out, expect waves of up to 10 ft.
Wind on the coast and offshore
The model doesn't separate offshore wind here: it's the same as on the coast.
Offshore wind. The coast faces southwest and the wind blows from land out to sea: calm shore and clean waves, but watch the drift out to sea.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Monday 2: 5.4 ft with a period of 11 s, from the north-northwest (moderate).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water is steady these days, with no sudden changes.
Water warmer than normal for late October (+2.2 °F).
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
Water temperature →Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 9:59 am (local time).
Surf in Murdeira today
Surf today
Good- 2.5–3.9 ft surf at the shore, a fun size for most surfers
- 4.3 ft swell at 11 s from the north-northwest, average; it hits this coast at an angle
- Fresh offshore wind (19 mph): it holds up and grooms the waves
- Rising tide (high tide at 10:41 am)
- Light: First light 6:06 am · sunrise 6:28 am · sunset 6:02 pm · last light 6:24 pm
- Tide: low 4:16 am (0.5 ft), high 10:41 am (3.1 ft), low 4:18 pm (0.6 ft) and high 10:54 pm (3.5 ft). Every break has its own tide: some work at low tide and others at high tide. The tide doesn’t change the score here.
- Water at 81.1 °F: boardshorts or a swimsuit and a rash guard.
- Energy: 423 kJ · Medium power
Today’s surf at a glance
The best window, 6:06 am to 10:00 am, has a good size and light offshore wind.
An estimate for this stretch of coast, not for a specific break: every beach or reef works its own way (its tide, bottom and angle). Check it when you get there.
Follow the flags and the lifeguards, and don’t paddle out if the surf is above your level: this score is a guide, not a substitute for what you see when you get there.
Diving in Murdeira today
Diving and snorkeling today
Likely visibility: fair- Slack water around high tide (10:41 am): little current from 10:20 am to 11:00 am
- 4.3 ft swell at 11 s from the north-northwest: strong surge on the bottom
- Fresh offshore wind (24 mph): it pushes surface swimmers away from shore
- 0.7 mph current toward the south (model)
- Sun high: more light underwater
Not a day for shore diving: swell, wind, current or storms during the best window. If you go, go with a dive shop and only if they give the OK.
- Slack water today: low tide 4:16 am (4:00–4:40 am), high tide 10:41 am (10:20–11:00 am), low tide 4:18 pm (4:00–4:40 pm) and high tide 10:54 pm (10:30–11:20 pm)
- Likely visibility: fair. Swell (up to 4.3 ft at 11 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 81.1 °F: a shorty or a rash guard.
- Snorkeling: better not, with these waves, wind or current.
- Night dive: dark from 6:24 pm. Waning gibbous (85%), rising at 9:13 pm: a bright night.
Your diving day at a glance
The best window, 9:40 am to 11:40 am, combines slack water at high tide and the sun high, though with some swell, fresh wind and current. Also worth a look from 3:40 pm to 5:00 pm, with slack water at low tide, though with some swell, fresh wind and current.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.
Dive sites, wrecks and dive shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Wreck 4.7 mi
- Wreck 6.6 mi
- Reserva Natural de Costa da Fragata 5.7 mi
- Dive Dunas de Sal 4.5 mi
- Cabo Verde Diving Melia Tortuga e Dunas 4.5 mi
- Santa Maria DIVE Center 4.6 mi
- Relax and Diving Center 5.7 mi
- Manta Diving Center 5.8 mi
- ScubaCaribe RIU Funana 5.8 mi
- Manta Diving Center Cape Verde 5.8 mi
- Scuba Team Cabo Verde 5.8 mi
- padi diving center 6.1 mi
Within 12 mi. Some may be missing or closed; marine reserves usually need a permit. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Wreck and reef positions are approximate and not for navigation; a wreck’s depth runs from the top of the hull to the seabed.
Sites: © OpenStreetMap contributors (ODbL). Wrecks: EMODnet Human Activities (AND-International), from UK Hydrographic Office data, CC BY 4.0. Contains public sector information licensed under the Open Government Licence v3.0.
Weather in Murdeira
Now in Murdeira
- Low / high
- 80 / 87 °F
- Rain
- 0.04 in · 35%
- Clouds
- 36%
- Humidity
- 56%
- Dew pointDew point
- 68 °F
- Visibility
- 15 mi
- UV indexUV
- 4 · moderate
- Air qualityAir
- Moderate · 48
- Saharan dust
- Moderate
Pressure and fishing
- ↗ RisingRising Anglers say fish bite less for a while
- → SteadySteady · now Anglers expect normal activity
- ↘ FallingFalling Anglers say fish feed more before the change
Steady now (+0.03 inHg in 3 hours). It barely changes over the next 48 hours. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.
Today, hour by hourHour by hour
Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.
| Time | 12:00 am | 3:00 am | 6:00 am | 9:00 am | 12:00 pm | 3:00 pm | 6:00 pm | 9:00 pm |
|---|---|---|---|---|---|---|---|---|
| Sky | Overcast | Light drizzle | Light drizzle | Partly cloudy | Clear sky | Clear sky | Clear sky | Clear |
| Temperature | 81° | 80° | 82° | 85° | 87° | 87° | 84° | 82° |
| Wind (mph) | 13 NNE | 16 NNE | 17 NE | 22 NE | 24 NE | 23 NE | 21 NE | 16 NE |
| Gusts | 21 | 23 | 24 | 30 | 35 | 34 | 32 | 25 |
| Waves | 4.7 ft | 5.1 ft | 5.1 ft | 5.2 ft | 5.3 ft | 5.2 ft | 5.1 ft | 5.0 ft |
| Rain | 0.00 in | 0.01 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in |
- 9:00 am 85° 22 NE 5.2 ft
- 12:00 pm 87° 24 NE 5.3 ft
- 3:00 pm 87° 23 NE 5.2 ft
- 6:00 pm 84° 21 NE 5.1 ft
- 9:00 pm 82° 16 NE 5.0 ft
- 12:00 am 82° 16 ENE 4.9 ft
- 3:00 am 81° 12 ENE 4.9 ft
- 6:00 am 81° 11 NE 4.8 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 80 / 87 °F | 24 mph NE | 5.3 ft | 10:41 am · 10:54 pm | |
| Fri 30 | 78 / 88 °F | 22 mph NE | 4.9 ft | 11:31 am · 11:46 pm | |
| Sat 31 | 76 / 86 °F | 11 mph NE | 3.8 ft | 12:30 pm | |
| Sun 1 | 75 / 84 °F | 10 mph NNE | 4.7 ft | 12:48 am · 1:42 pm | |
| Mon 2 | 75 / 83 °F | 12 mph NNE | 5.4 ft | 2:02 am · 3:08 pm | |
| Tue 3 | 76 / 84 °F | 11 mph NE | 4.9 ft | 3:22 am · 4:30 pm | |
| Wed 4 | 75 / 83 °F | 12 mph ENE | 3.8 ft | 4:37 am · 5:34 pm | |
| Thu 5 | 76 / 83 °F | 13 mph ENE | 3.4 ft | 5:41 am · 6:23 pm | |
| Fri 6 | 77 / 83 °F | 18 mph NE | 3.8 ft | 6:34 am · 7:05 pm | |
| Sat 7 | 78 / 84 °F | 18 mph NE | — | 7:19 am · 7:42 pm | |
| Sun 8 | 76 / 85 °F | 15 mph NE | — | 7:59 am · 8:17 pm | |
| Mon 9 | 76 / 84 °F | 15 mph NNE | — | 8:36 am · 8:51 pm | |
| Tue 10 | 76 / 84 °F | 17 mph NNE | — | 9:10 am · 9:24 pm | |
| Wed 11 | 77 / 83 °F | 17 mph NNE | — | 9:44 am · 9:58 pm |
- Fri 30 Clear sky 78° / 88° 4.9 ft
- Sat 31 Mainly clear 76° / 86° 3.8 ft
- Sun 1 Mainly clear 75° / 84° 4.7 ft
- Mon 2 Mainly clear 75° / 83° 5.4 ft
- Tue 3 Light drizzle 76° / 84° 4.9 ft
- Wed 4 Mainly clear 75° / 83° 3.8 ft
- Thu 5 Overcast 76° / 83° 3.4 ft
Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.
- The models Partly agree · medium confidence: unsure about temperature today. See the models →
- Outlook Next few weeks, compared with normal: a bit warmer, normal rain and a slightly warmer sea. See the outlook →
- Normal Today, warmer than normal for late October (+3.9 °F; normal high: 84 °F). Climate by month →
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 9:59 am (local time).
The sun in Murdeira
Sunrise and sunset
- First light 5:41 am
- Full dark 6:50 pm
- Civil dawn 6:06 am
- Civil dusk 6:24 pm
- Solar noon 12:15 pm (60° high)
- Daylight 11 h 34 min (−1 min)
- Evening golden hour 5:33 pm
- Full dark 6:50 pm
Golden hour and the day-night map
Today the sun is 92,334,011 mi away and looks 32′ 11″ across.
The moon in Murdeira
Moon phase and position
Today the moon is 226,666 mi away and looks 32′ 45″ across.
Solunar periods
Today's activity: medium- 2:01–4:01 am Major · the moon passes overhead · high activity
- 2:33–4:33 pm Major · the moon passes underfoot · high activity
- 9:24–10:24 am Minor · moonset · medium activity
- 8:43–9:43 pm Minor · moonrise · medium activity
According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.
Upcoming moon phases
2026 moon calendar →- Last quarter Sun, Nov 1 · 7:29 pmNov 1 in 3 days
- New moon Mon, Nov 9 · 6:03 amNov 9 in 11 days
- First quarter Tue, Nov 17 · 10:48 amNov 17 in 19 days
- Full moon Tue, Nov 24 · 1:54 pmNov 24 in 26 days
Next perigee (the moon at its closest to Earth): November 25, 223,281 mi away.
Where to fish in Murdeira
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.
Water depth
Gentle slopeThe bottom slopes gently: 16 ft deep 1,100 ft from shore and 33 ft at 0.35 mi. It reaches 164 ft at 1.3 mi.
From the shoreline (800 ft from Murdeira) out to sea, heading southwest.
How far from shore
- 16 ft deep1,100 ft
- 33 ft deep0.35 mi
- 66 ft deep0.55 mi
- 164 ft deep1.3 mi
For fishing, swimming and diving
- Shore fishing. Shallow, gradual bottom (16 ft at 1,100 ft): cast far from the beach and fish the high tide, when there is more water close in.
- Swimming. A very gentle way in with plenty of shallow water, good for kids. At low tide the water can be far out.
- Diving. Shore diving works here: 33 ft at 0.35 mi and 66 ft at 0.55 mi from shore.
Rough estimate: here the data comes in cells of about 0.3 mi and misses details near shore (rocks, sandbars, small coves).
Source: EMODnet Bathymetry DTM 2024, here using the GEBCO grid (CC BY 4.0), cells of about 0.3 mi; depth at the lowest astronomical tide. For reference only: not for navigation or anchoring.
Nearest lighthouse
Ponta de Vera Cruz Lighthouse 6.0 mi south
- Light
- Steady red light · F R
- Range
- 3 nautical miles (3.5 mi)
- Light height
- 16 ft above sea level
- Tower height
- 13 ft
Other lighthouses nearby: Farol da Ponta do Sinó (6.2 mi south).
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikidata · Sources and licenses
Tides near MurdeiraTides nearby
- Espargos5.4 mi
- São Paulo5.6 mi
- Santa Maria Centro5.8 mi
- Santa Maria5.9 mi
- Palmeira6.4 mi
- Pedra Lume6.5 mi
- Bom Sossego35 mi
- Sal Rei35 mi
Murdeira at a glance
- Town or city of about 427 people. Coordinates: 16.678° N, 22.935° W.
- It is 5.4 mi south of Espargos, the main place in Sal. The sun rises at the same time and sets at the same time than in Espargos.
- The nearest tide station, Palmeira, is 5.9 mi to the northwest.
- Its coast faces southwest.
- Beaches and harbors nearby: Praia do Cascalho (0.2 mi), Praia da Canoa (0.4 mi), Canoa Beach (0.5 mi), Prainha do Roucamento (0.9 mi).
Questions about MurdeiraQuestions
What time is high tide today in Murdeira?
Today in Murdeira there are high tides at 10:41 am (3.1 ft) and 10:54 pm (3.5 ft) and low tides at 4:16 am and 4:18 pm. Tide coefficient 91.
What time is sunset today in Murdeira?
At 6:02 pm. There is light until the end of civil twilight, at 6:24 pm.
What time is sunrise tomorrow in Murdeira?
At 6:29 am. First light comes at 5:41 am.
What phase is the moon today?
Waning gibbous, 85% illuminated. New moon on Mon, Nov 9 · 6:03 am.
When are the next spring tides?
From November 9 to 11.
What are today's solunar periods?
Major 2:01–4:01 am, Minor 9:24–10:24 am, Major 2:33–4:33 pm, Minor 8:43–9:43 pm. Today's activity is medium.
What's the weather like today in Murdeira?
Light drizzle, from 80 °F to 87 °F, with a fresh breeze from the northeast (23 mph) and a 35% chance of rain.
How is the sea today in Murdeira?
Moderate (Douglas 4): 5.2 ft waves with a period of 10.4 s from the north-northwest. The water is 81.3 °F.
When is the best time to visit Murdeira?
The best time to visit Murdeira is from January to June: highs of 76 °F to 79 °F, barely 1 rainy day a month and 9 hours of sunshine a day.
Can I use this data for navigation?
No. These are predictions for fishing and leisure; for navigation, use the official publications.
Where this data comes from
Tide: Palmeira station, with constants from TICON-4 (Hart-Davis, Dettmering and Seitz, 2025, SEANOE), licensed CC BY 4.0, via Slackwater database (changes). Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).