TidePlanet

Today in Chatan there are high tides at 8:52 am (6.4 ft) and 8:08 pm (6.8 ft) and low tides at 2:15 am and 2:18 pm. Tide coefficient 92. Right now the tide is rising toward the high tide at 8:52 am. The sun rises at 6:36 am and sets at 5:49 pm: 11 h 13 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 8:18 pm. Major solunar periods run from 1:31 am to 3:31 am and from 2:04 pm to 4:04 pm. The next spring tides arrive from October 27 to 29. The sea is slight, with 3.2 ft waves. There's a gentle breeze from the east-northeast (10 mph). Clear sky, 76 °F.

Fishing

Fishing in Chatan today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
8
Good day · 8 out of 10 2:00–3:20 pm Also 1:30–3:20 am and 7:50–8:50 pm
  • Low tide at 2:18 pm
  • Major period 2:04–4:04 pm
  • Steady pressure (30.06 inHg), light offshore wind (9 mph) and some swell (2.8 ft waves) to stir the water
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 92 (spring tides)

Your day at a glance

The best window, 2:00 pm to 3:20 pm, combines the 2:18 pm low tide, a major period and some swell. Also good from 1:30 am to 3:20 am, with the 2:15 am low tide, a major period and some swell. Also good from 7:50 pm to 8:50 pm, with the 8:08 pm high tide, moonrise and some swell.

Species with the most records nearby: mahi-mahi, bluefin trevally and giant trevally. What you can catch

How it works · Next 7 days · Fishing rules

Beach

Beach day in Chatan

Beach forecast, 7 days →

Is it a beach day?

4 good hours
7
Good beach day · 7 out of 10 8:00 am–12:00 pm
  • Mostly sunny
  • Feels like 83 °F: beach weather
  • Calm for swimming: 3.2 ft waves
  • UV 4 (moderate): SPF 30 sunscreen
  • Water at 81 °F (warm)
  • Rain (0.01 in)

Today, hour by hour

  • Swimming Calm · 3.2 ft

    3.2 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.

  • Water 81 °F

    Warm: very pleasant.

  • Sun & sunscreen UV 6 · SPF 30

    Max UV 6 (moderate): SPF 30 sunscreen, reapplied every 2 hours.

  • Wind 10 mph

    Offshore breeze (10 mph). Watch floats and inflatables: offshore wind carries them out to sea.

  • Tide & sand 2:18 pm

    Low tide at 2:15 am and 2:18 pm: that's when there's the most sand. High tide at 8:52 am and 8:08 pm. Coefficient 92 (spring tides): little sand left at high tide.

The best window, 8:00 am to 12:00 pm, brings sunshine, beach weather, a calm sea and water at 81 °F, though with rain, light offshore wind and a spring high tide.

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 Chatan

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

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).

Tides

Tides in Chatan

Tides for 7 days →

Today's high and low tides

  • ▼ Low tide 2:15 am 0.0 ft
  • ▼ Low tide 2:18 pm 3.0 ft
  • ▲ High tide 8:08 pm 6.8 ft · coef. 87

↑ Rising The tide is rising. 1 h 6 min to high tide at 8:52 am.

Tide coefficient 92 for the 8:52 am high tide and 87 for the 8:08 pm high tide. Spring tides. The water rises and falls 6.8 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 (7.6 ft) and the lowest, on December 25 (-1.0 ft).

Mixed: two high and two low tides a day, but of quite different heights.

Heights above NLLW. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. NLLW

Tide coefficient and range in October

The biggest tides of the month came from October 26 to 27 (coefficient 104, 6.9 ft range). The smallest, on October 19 (coefficient 25, 2.6 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 6:36 am · 5:49 pm Low tide 2:15 am · 0.0 ft High tide 8:52 am · 6.4 ft Low tide 2:18 pm · 3.0 ft High tide 8:08 pm · 6.8 ft Coef. 92 88% Major periods 1:31 am · 2:04 pm Medium
Fri 30 6:36 am · 5:48 pm Low tide 3:02 am · 0.2 ft High tide 9:46 am · 6.0 ft Low tide 3:02 pm · 3.4 ft High tide 8:51 pm · 6.5 ft Coef. 79 80% Major periods 2:36 am · 3:08 pm Medium
Sat 31 6:37 am · 5:48 pm Low tide 3:56 am · 0.6 ft High tide 10:48 am · 5.5 ft Low tide 3:56 pm · 3.7 ft High tide 9:43 pm · 6.0 ft Coef. 64 69% Major periods 3:40 am · 4:11 pm Medium
Sun 1 6:38 am · 5:47 pm Low tide 4:59 am · 1.1 ft High tide 12:04 pm · 5.3 ft Low tide 5:18 pm · 3.9 ft High tide 10:58 pm · 5.5 ft Coef. 50 58% Major periods 4:40 am · 5:09 pm Medium
Mon 2 6:38 am · 5:46 pm Low tide 6:15 am · 1.6 ft High tide 1:31 pm · 5.2 ft Low tide 7:12 pm · 3.8 ft — Coef. 43 Last quarter Major periods 5:36 am · 6:02 pm Medium
Tue 3 6:39 am · 5:46 pm High tide 12:44 am · 5.2 ft Low tide 7:40 am · 1.9 ft High tide 2:42 pm · 5.5 ft Low tide 8:46 pm · 3.2 ft Coef. 47 36% Major periods 6:27 am · 6:51 pm Medium
Wed 4 6:40 am · 5:45 pm High tide 2:28 am · 5.2 ft Low tide 8:54 am · 2.0 ft High tide 3:32 pm · 5.8 ft Low tide 9:46 pm · 2.5 ft Coef. 58 26% Major periods 7:14 am · 7:37 pm Low

▲ high tide · ▼ low tide · heights above NLLW. Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.

Where this tide comes from

A · Official station

Tides from the Nakagusuku station (TICON-4), 4.5 mi from Chatan. Times and heights are its predictions.

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

How we calculate the tide

Sea and waves

The sea at Chatan

7-day waves

Sea stateSea state: slight

Slight Douglas 3 · gentle breeze, Beaufort 3
Waves 3.2 ft · 6.4 s from the north (358°)
Swell 2.6 ft · 6.3 s from the north-northwest
Current 0.8 mph toward the NNE

The waves you may find

  • Most commonMost common1.6 ft
  • Significant3.2 ft
  • Highest expectedHighest6.7 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 6.7 ft. Before heading out, expect waves of up to 6.7 ft.

Wind on the coast and offshore

On the coast 10 mph ENE · gusts 19
Offshore (13 mi N)Offshore 12 mph ENE · gusts 17

Offshore wind. The coast faces west and the wind blows from land out to sea: calm shore and clean waves, but watch the drift out to sea.

Offshore Hourly wind →

Wave height, next 7 daysWaves, next 7 days

Waves build over the next few days. The biggest waves arrive on Wednesday 4: 5.2 ft with a period of 8 s, from the north-northeast (moderate).

Water temperature

Water temperature →
Water now80.8 °F
Today 80.8–81.0 °F air: 73 / 81 °F
Satellite (2 days ago) 81.7 °F measured 0.6 mi away

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 (+1.7 °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 7:47 am (local time).

Surf

Surf in Chatan today

Surf hour by hour and 7 days →

Surf today

Poor
2
Poor · 2 out of 10 6:12–10:00 am 1.3–2.0 ft Also 2:00–6:00 pm
  • 1.3–2.0 ft surf at the shore, a fun size for most surfers
  • 2.7 ft swell at 6 s from the north-northwest, short: weak, messy waves; it hits this coast at an angle
  • Light offshore wind (10 mph): it holds up and grooms the waves
  • First or last light of the day
  • Rising tide (high tide at 8:52 am)
Surf at the shore 1.3–2.0 ft average – sets
Swell 2.7 ft 6 s · NNW · 53 kJ
Wind 10 mph ENE · offshore
Water and wetsuit 80.8 °F Boardshorts
  • Light: First light 6:12 am · sunrise 6:36 am · sunset 5:49 pm · last light 6:13 pm
  • Tide: low 2:15 am (-0.0 ft), high 8:52 am (6.4 ft), low 2:18 pm (3.0 ft) and high 8:08 pm (6.8 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 80.8 °F: boardshorts or a swimsuit and a rash guard.
  • Energy: 53 kJ · Low power

Today’s surf at a glance

The best window, 6:12 am to 10:00 am, has light offshore wind, though with a short-period swell. 2:00 pm to 6:00 pm can also work, with light offshore wind, though with small waves and a short-period swell.

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.

How it’s calculated · Next 7 days

Diving

Diving in Chatan today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: fair
8
Good day · 8 out of 10 9:10–10:10 am Also 1:30–3:10 pm
  • Slack water around high tide (8:52 am): little current from 8:30 am to 9:20 am
  • 2.5 ft swell at 6 s from the north-northwest: some surge on the bottom
  • Light offshore wind (10 mph)
  • 0.4 mph current toward the northeast, weak (model)
  • Sun high: more light underwater
Swell 2.5 ft 6 s · from the NNW
Likely visibility Fair Snorkeling: fair
Water and suit 80.8 °F Shorty or a rash guard
Current 0.4 mph toward the NE
  • Slack water today: low tide 2:15 am (2:00–2:30 am), high tide 8:52 am (8:30–9:20 am), low tide 2:18 pm (1:50–2:50 pm) and high tide 8:08 pm (7:40–8:30 pm)
  • Likely visibility: fair. Swell (up to 4.6 ft at 7 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
  • Water at 80.8 °F: a shorty or a rash guard.
  • Snorkeling: doable, with some waves or wind.
  • Night dive: dark from 6:13 pm. Waning gibbous (88%), rising at 8:18 pm: a bright night.

Your diving day at a glance

The best window, 9:10 am to 10:10 am, combines slack water at high tide, light wind, weak current and the sun high. Also worth a look from 1:30 pm to 3:10 pm, with slack water at low tide, light wind and the sun high, though with 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.

How it works · Next 7 days

Dive sites, wrecks and dive shops nearby

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

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

Sites: © OpenStreetMap contributors (ODbL). Sites and fish: Reef Life Survey / IMOS NRMN, CC BY 4.0; fish names, Wikidata.

Weather

Weather in Chatan

14-day weather

Now in Chatan

Now 76 °F Clear sky · feels like 79 °F · 73 / 81 °F
Low / high
73 / 81 °F
Rain
0.19 in · 96%
Clouds
12%
Humidity
73%
Dew pointDew point
67 °F
Visibility
15 mi
UV indexUV
1 · low
Air qualityAir
Moderate · 41
Saharan dust
No

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 (+0.02 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 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Sky Light drizzleLight drizzleLight drizzleMainly clearLight drizzleLight drizzleDrizzleLight drizzle
Temperature 73°73°74°78°80°81°76°76°
Wind (mph) 8 ENE8 NE10 ENE10 ENE10 E9 E7 E8 E
Gusts 1416182020191215
Waves 4.0 ft3.7 ft3.4 ft3.1 ft3.0 ft2.8 ft2.7 ft2.6 ft
Rain 0.00 in0.01 in0.00 in0.00 in0.00 in0.01 in0.03 in0.00 in
  • 9:00 am 78° 10 ENE 3.1 ft
  • 12:00 pm 80° 10 E 3.0 ft
  • 3:00 pm 81° 9 E 2.8 ft
  • 6:00 pm 76° 7 E 2.7 ft
  • 9:00 pm 76° 8 E 2.6 ft
  • 12:00 am 75° 9 ESE 2.3 ft
  • 3:00 am 75° 4 SE 2.2 ft
  • 6:00 am 74° 4 NNW 2.0 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Drizzle 73 / 81 °F 10 mph ENE 4.0 ft 8:52 am · 8:08 pm
Fri 30 Drizzle 74 / 81 °F 12 mph NNE 3.2 ft 9:46 am · 8:51 pm
Sat 31 Mainly clear 72 / 78 °F 12 mph NNE 3.2 ft 10:48 am · 9:43 pm
Sun 1 Mainly clear 71 / 79 °F 9 mph ESE 2.8 ft 12:04 pm · 10:58 pm
Mon 2 Overcast 71 / 80 °F 7 mph NNW 1.8 ft 1:31 pm
Tue 3 Overcast 73 / 79 °F 14 mph NNE 5.0 ft 12:44 am · 2:42 pm
Wed 4 Light drizzle 74 / 81 °F 13 mph NE 5.2 ft 2:28 am · 3:32 pm
Thu 5 Partly cloudy 74 / 80 °F 13 mph N 4.8 ft 3:45 am · 4:11 pm
Fri 6 Partly cloudy 73 / 80 °F 14 mph NE 3.2 ft 4:43 am · 4:44 pm
Sat 7 Partly cloudy 72 / 78 °F 15 mph ENE 4.3 ft 5:32 am · 5:15 pm
Sun 8 Light drizzle 74 / 79 °F 13 mph E 3.3 ft 6:14 am · 5:43 pm
Mon 9 Light drizzle 70 / 75 °F 16 mph NE 8.8 ft 6:53 am · 6:11 pm
Tue 10 Overcast 68 / 72 °F 15 mph NNE 7.8 ft 7:30 am · 6:39 pm
Wed 11 Partly cloudy 68 / 74 °F 10 mph NE 4.4 ft 8:05 am · 7:06 pm
  • Fri 30 Drizzle 74° / 81° 3.2 ft
  • Sat 31 Mainly clear 72° / 78° 3.2 ft
  • Sun 1 Mainly clear 71° / 79° 2.8 ft
  • Mon 2 Overcast 71° / 80° 1.8 ft
  • Tue 3 Overcast 73° / 79° 5.0 ft
  • Wed 4 Light drizzle 74° / 81° 5.2 ft
  • Thu 5 Partly cloudy 74° / 80° 4.8 ft
See all 14 days →

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.

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 7:47 am (local time).

Sun

The sun in Chatan

Sunrise and sunset →

Sunrise and sunset

Rises 6:36 am in the ESE (104°)ESE
Sets 5:49 pm in the WSW (255°)WSW
  • First light 5:45 am
  • Full dark 6:40 pm
  • Civil dawn 6:12 am
  • Civil dusk 6:13 pm
  • Solar noon 12:13 pm (50° high)
  • Daylight 11 h 13 min (−1 min)
  • Evening golden hour 5:17 pm
  • Full dark 6:40 pm

Golden hour and the day-night map

Morning golden hour6:36–7:08 am
Evening golden hour5:17–5:49 pm
Chatan

Today the sun is 92,344,145 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Chatan

The moon for 7 days →

Moon phase and position

Waning gibbous · 88% 88% illuminated · 18.5 days old New moon on Mon, Nov 9 · 4:03 pm
Rises 8:18 pm in the ENE (59°)ENE
Sets 10:54 am tomorrow · in the WNW (301°) · set at 9:48 am
Transit 2:31 am overhead
Visible 14 h 36 min from 8:18 pm to 10:54 am

Today the moon is 226,480 mi away and looks 32′ 46″ across.

Solunar periods

Today's activity: medium
  • 1:31–3:31 am Major · the moon passes overhead · high activity
  • 2:04–4:04 pm Major · the moon passes underfoot · high activity
  • 9:18–10:18 am Minor · moonset · medium activity
  • 7:48–8:48 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 Mon, Nov 2 · 5:29 amNov 2 in 4 days
  • New moon Mon, Nov 9 · 4:03 pmNov 9 in 11 days
  • First quarter Tue, Nov 17 · 8:48 pmNov 17 in 19 days
  • Full moon Tue, Nov 24 · 11:54 pmNov 24 in 26 days

Perigee on October 29, 226,426 mi away, coinciding with the spring tides from October 27 to 29: they will be stronger than usual.

Place

Where to fish in Chatan

All places in Okinawa →

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 slope

The bottom slopes gently: 16 ft deep 0.25 mi from shore and 33 ft at 0.8 mi.

From the shoreline (0.75 mi from Chatan) out to sea, heading west.

How far from shore

  • 16 ft deep0.25 mi
  • 33 ft deep0.8 mi
  • 66 ft deep1.6 mi
  • 164 ft deepnot within 3.1 mi

For fishing, swimming and diving

  • Shore fishing. Shallow, gradual bottom (16 ft at 0.25 mi): 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. Shallow near shore: you only reach 33 ft at 0.8 mi. For dives deeper than 33 ft, go by boat.

Rough estimate: here the data comes in cells of about 0.3 mi and misses details near shore (rocks, sandbars, small coves).

Source: NOAA ETOPO 2022 (CC0), cells of about 0.3 mi; depth below mean sea level. For reference only: not for navigation or anchoring.

Tides near ChatanTides nearby

All places in Okinawa, A to Z (356) →

Chatan at a glance

  • Town or city of about 28,201 people. Coordinates: 26.309° N, 127.770° E.
  • It is 8.8 mi northeast of Naha, the main place in Okinawa. The sun rises at the same time and sets at the same time than in Naha.
  • The nearest tide station, Nakagusuku, is 4.5 mi to the east.
  • Its coast faces west.
  • Beaches and harbors nearby: Ginowan Kō (3.5 mi).

Questions about ChatanQuestions

What time is high tide today in Chatan?

Today in Chatan there are high tides at 8:52 am (6.4 ft) and 8:08 pm (6.8 ft) and low tides at 2:15 am and 2:18 pm. Tide coefficient 92.

What time is sunset today in Chatan?

At 5:49 pm. There is light until the end of civil twilight, at 6:13 pm.

What time is sunrise tomorrow in Chatan?

At 6:36 am. First light comes at 5:45 am.

What phase is the moon today?

Waning gibbous, 88% illuminated. New moon on Mon, Nov 9 · 4:03 pm.

When are the next spring tides?

From October 27 to 29, together with the lunar perigee: they will be stronger than usual.

What are today's solunar periods?

Major 1:31–3:31 am, Minor 9:18–10:18 am, Major 2:04–4:04 pm, Minor 7:48–8:48 pm. Today's activity is medium.

What's the weather like today in Chatan?

Drizzle, from 73 °F to 81 °F, with a gentle breeze from the east-northeast (10 mph) and a 96% chance of rain.

How is the sea today in Chatan?

Slight (Douglas 3): 3.2 ft waves with a period of 6.4 s from the north. The water is 80.8 °F.

When is the best time to visit Chatan?

The best time to visit Chatan is from October to December: highs of 71 °F to 82 °F, about 10 rainy days a month and 4 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: Nakagusuku 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).

Spotted a mistake? Tell us · How we calculate the tide

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