TidePlanet

Today in Yonakuni there are high tides at 9:30 am (4.8 ft) and 8:37 pm (5.9 ft) and low tides at 2:56 am and 2:41 pm. Tide coefficient 93. Right now the tide is rising toward the high tide at 8:37 pm. The sun rises at 6:53 am and sets at 6:10 pm: 11 h 18 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 8:43 pm. Major solunar periods run from 1:51 am to 3:51 am and from 2:23 pm to 4:23 pm. The next spring tides arrive from October 27 to 29. The sea is moderate, with 4.4 ft waves. There's a gentle breeze from the northeast (9 mph). Overcast, 79 °F.

Fishing

Fishing in Yonakuni today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
8
Good day · 8 out of 10 2:20–3:40 pm Also 9:30–10:30 am and 8:10–9:10 pm
  • Low tide at 2:41 pm
  • Major period 2:23–4:23 pm
  • Steady pressure (30.06 inHg), light onshore wind (8 mph) and some swell (4.6 ft waves) to stir the water
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 93 (spring tides)

Your day at a glance

The best window, 2:20 pm to 3:40 pm, combines the 2:41 pm low tide, a major period, a light onshore breeze and some swell. Also good from 9:30 am to 10:30 am, with the 9:30 am high tide, moonset and a light onshore breeze. Also good from 8:10 pm to 9:10 pm, with the 8:37 pm high tide, moonrise, a light onshore breeze and some swell.

Species with the most records nearby: mangrove red snapper, striped mullet, bluefin trevally and great barracuda. What you can catch

How it works · Next 7 days · Fishing rules

Beach

Beach day in Yonakuni

Beach forecast, 7 days →

Is it a beach day?

2 good hours
6
Fair beach day · 6 out of 10 11:00 am–2:00 pm
  • Mostly sunny
  • Feels like 82 °F: beach weather
  • Onshore breeze (8 mph)
  • UV 7 (high): SPF 50 sunscreen
  • Water at 81 °F (warm)
  • Low tide at 2:41 pm: more sand

Today, hour by hour

  • Swimming Use care · 5.1 ft

    5.1 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 81 °F

    Warm: very pleasant.

  • Sun & sunscreen UV 7 · SPF 50

    Max UV 7 (high): SPF 50 sunscreen, reapplied every 2 hours.

  • Wind 10 mph

    Onshore breeze (10 mph).

  • Tide & sand 2:56 am

    Low tide at 2:56 am and 2:41 pm: that's when there's the most sand. High tide at 9:30 am and 8:37 pm. Coefficient 93 (spring tides): little sand left at high tide.

The best window, 11:00 am to 2:00 pm, brings sunshine, beach weather, little wind, water at 81 °F and low tide at 2:41 pm, though with 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 Yonakuni

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 Yonakuni

Tides for 7 days →

Today's high and low tides

  • ▼ Low tide 2:56 am -0.1 ft
  • ▲ High tide 9:30 am 4.8 ft · coef. 93
  • ▼ Low tide 2:41 pm 2.6 ft

↑ Rising The tide is rising. 4 h 19 min to high tide at 8:37 pm.

Tide coefficient 93 for the 9:30 am high tide and 87 for the 8:37 pm high tide. Spring tides. The water rises and falls 6.0 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 13 (6.6 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 106, 5.9 ft range). The smallest, from October 18 to 19 (coefficient 23, 2.0 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 6:53 am · 6:10 pm Low tide 2:56 am · -0.1 ft High tide 9:30 am · 4.8 ft Low tide 2:41 pm · 2.6 ft High tide 8:37 pm · 5.9 ft Coef. 93 88% Major periods 1:51 am · 2:23 pm Medium
Fri 30 6:53 am · 6:10 pm Low tide 3:45 am · 0.1 ft High tide 10:27 am · 4.5 ft Low tide 3:21 pm · 2.9 ft High tide 9:20 pm · 5.6 ft Coef. 79 80% Major periods 2:56 am · 3:28 pm Medium
Sat 31 6:54 am · 6:09 pm Low tide 4:41 am · 0.4 ft High tide 11:36 am · 4.2 ft Low tide 4:10 pm · 3.2 ft High tide 10:13 pm · 5.2 ft Coef. 62 69% Major periods 4:00 am · 4:31 pm Medium
Sun 1 6:54 am · 6:08 pm Low tide 5:48 am · 0.9 ft High tide 1:04 pm · 4.0 ft Low tide 5:27 pm · 3.4 ft High tide 11:28 pm · 4.8 ft Coef. 48 58% Major periods 5:00 am · 5:29 pm Medium
Mon 2 6:55 am · 6:08 pm Low tide 7:08 am · 1.2 ft High tide 2:36 pm · 4.1 ft Low tide 7:35 pm · 3.3 ft — Coef. 42 Last quarter Major periods 5:56 am · 6:22 pm Medium
Tue 3 6:56 am · 6:07 pm High tide 1:15 am · 4.4 ft Low tide 8:31 am · 1.4 ft High tide 3:37 pm · 4.3 ft Low tide 9:19 pm · 2.8 ft Coef. 47 36% Major periods 6:47 am · 7:11 pm Medium
Wed 4 6:56 am · 6:07 pm High tide 2:59 am · 4.4 ft Low tide 9:38 am · 1.5 ft High tide 4:17 pm · 4.6 ft Low tide 10:22 pm · 2.2 ft Coef. 58 26% Major periods 7:34 am · 7:57 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 Yonaguni station (TICON-4), 3.8 mi from Yonakuni. 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 Yonakuni

7-day waves

Sea stateSea state: moderate

Moderate Douglas 4 · gentle breeze, Beaufort 3
Waves 4.4 ft · 7.2 s from the northeast (38°)
Swell 3.8 ft · 6.4 s from the north-northeast
Current 0.7 mph toward the ESE

The waves you may find

  • Most commonMost common2.2 ft
  • Significant4.4 ft
  • Highest expectedHighest9.0 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 9.0 ft. Before heading out, expect waves of up to 9.0 ft.

Wind on the coast and offshore

On the coast 9 mph NE · gusts 13

The model doesn't separate offshore wind here: it's the same as on the coast.

Cross-onshore wind. The coast faces north and the wind comes in from the sea at an angle: a bit more surf at the shore and drift along the coast, toward land.

Cross-onshore Hourly wind →

Wave height, next 7 daysWaves, next 7 days

Waves ease over the next few days. The biggest waves arrive on Thursday 29: 6.4 ft with a period of 8 s, from the north-northeast (moderate).

Water temperature

Water temperature →
Water now81.5 °F
Today 81.1–81.5 °F air: 77 / 79 °F
Satellite (2 days ago) 81.7 °F measured 0.2 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 (+1.3 °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 4:19 pm (local time).

Surf

Surf in Yonakuni today

Surf hour by hour and 7 days →

Surf today

Fair
4
Fair · 4 out of 10 7:00–11:00 am 3.2–5.0 ft
  • 3.2–5.0 ft surf at the shore, a good size with some punch
  • 5.1 ft swell at 6 s from the north-northeast, short: weak, messy waves
  • Light cross-shore wind (9 mph): a bit of chop
  • Rising tide (high tide at 9:30 am)
Surf at the shore 3.2–5.0 ft average – sets
Swell 5.1 ft 6 s · NNE · 184 kJ
Wind 9 mph ENE · cross-shore
Water and wetsuit 81.1 °F Boardshorts
  • Light: First light 6:29 am · sunrise 6:53 am · sunset 6:10 pm · last light 6:34 pm
  • Tide: low 2:56 am (-0.1 ft), high 9:30 am (4.8 ft), low 2:41 pm (2.6 ft) and high 8:37 pm (5.9 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: 184 kJ · Medium power

Today’s surf at a glance

The best window, 7:00 am to 11:00 am, has a good size, though with 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 Yonakuni today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: poor
5
Average day · 5 out of 10 1:20–3:30 pm Also 10:30 am–12:20 pm
  • Slack water around low tide (2:41 pm): little current from 2:10 pm to 3:10 pm
  • 4.2 ft swell at 6 s from the north-northeast: some surge on the bottom
  • Light onshore wind (8 mph)
  • 1.1 mph current toward the east-southeast (model)
  • Sun high: more light underwater
Swell 4.2 ft 6 s · from the NNE
Likely visibility Poor Snorkeling: poor
Water and suit 81.1 °F Shorty or a rash guard
Current 1.1 mph toward the ESE
  • Slack water today: low tide 2:56 am (2:40–3:11 am), high tide 9:30 am (9:10–10:00 am), low tide 2:41 pm (2:10–3:10 pm) and high tide 8:37 pm (8:10–9:00 pm)
  • Likely visibility: poor. Swell (up to 6.3 ft at 8 s) and wind over the last few days have 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 6:34 pm. Waning gibbous (88%), rising at 8:43 pm: a bright night.

Your diving day at a glance

The best window, 1:20 pm to 3:30 pm, combines slack water at low tide, light wind and the sun high, though with some swell and current. Also worth a look from 10:30 am to 12:20 pm, with light wind and the sun high, though with tidal current, some swell 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.

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).

Weather

Weather in Yonakuni

14-day weather

Now in Yonakuni

Now 79 °F Overcast · feels like 80 °F · 77 / 79 °F
Low / high
77 / 79 °F
Rain
0.00 in · 6%
Clouds
89%
Humidity
61%
Dew pointDew point
64 °F
Visibility
15 mi
UV indexUV
1 · low
Air qualityAir
Fair · 38
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 (−0.03 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 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Sky OvercastClearClearPartly cloudyMainly clearOvercastOvercastPartly cloudy
Temperature 77°77°78°78°79°79°79°79°
Wind (mph) 12 ENE14 ENE12 ENE8 ENE8 NE8 NNE11 NE8 NE
Gusts 1917181312121512
Waves 6.4 ft5.9 ft5.6 ft5.3 ft5.0 ft4.6 ft4.2 ft3.9 ft
Rain 0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in
  • 6:00 pm 79° 11 NE 4.2 ft
  • 9:00 pm 79° 8 NE 3.9 ft
  • 12:00 am 79° 7 NE 3.6 ft
  • 3:00 am 79° 10 NNE 3.4 ft
  • 6:00 am 79° 12 NNE 3.2 ft
  • 9:00 am 78° 13 N 3.1 ft
  • 12:00 pm 79° 12 N 3.2 ft
  • 3:00 pm 79° 16 N 3.4 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Overcast 77 / 79 °F 14 mph NE 6.4 ft 9:30 am · 8:37 pm
Fri 30 Light drizzle 78 / 79 °F 21 mph NNE 4.7 ft 10:27 am · 9:20 pm
Sat 31 Light drizzle 77 / 79 °F 20 mph NE 4.9 ft 11:36 am · 10:13 pm
Sun 1 Overcast 78 / 80 °F 19 mph SE 4.5 ft 1:04 pm · 11:28 pm
Mon 2 Light drizzle 79 / 80 °F 19 mph E 4.0 ft 2:36 pm
Tue 3 Light drizzle 78 / 79 °F 20 mph NE 5.2 ft 1:15 am · 3:37 pm
Wed 4 Light drizzle 78 / 79 °F 19 mph NE 5.0 ft 2:59 am · 4:17 pm
Thu 5 Light drizzle 78 / 79 °F 14 mph NNE 3.7 ft 4:17 am · 4:49 pm
Fri 6 Light drizzle 77 / 80 °F 21 mph NE 4.6 ft 5:16 am · 5:17 pm
Sat 7 Mainly clear 79 / 80 °F 14 mph SE 5.5 ft 6:04 am · 5:45 pm
Sun 8 Light drizzle 78 / 79 °F 15 mph ENE 6.2 ft 6:47 am · 6:11 pm
Mon 9 Drizzle 74 / 78 °F 38 mph NNE 16 ft 7:27 am · 6:38 pm
Tue 10 Light drizzle 74 / 76 °F 30 mph NE 14 ft 8:05 am · 7:05 pm
Wed 11 Overcast 75 / 78 °F 21 mph ENE 7.3 ft 8:42 am · 7:33 pm
  • Fri 30 Light drizzle 78° / 79° 4.7 ft
  • Sat 31 Light drizzle 77° / 79° 4.9 ft
  • Sun 1 Overcast 78° / 80° 4.5 ft
  • Mon 2 Light drizzle 79° / 80° 4.0 ft
  • Tue 3 Light drizzle 78° / 79° 5.2 ft
  • Wed 4 Light drizzle 78° / 79° 5.0 ft
  • Thu 5 Light drizzle 78° / 79° 3.7 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 4:19 pm (local time).

Sun

The sun in Yonakuni

Sunrise and sunset →

Sunrise and sunset

Rises 6:53 am in the ESE (104°)ESE
Sets 6:10 pm in the WSW (256°)WSW
  • First light 6:03 am
  • Full dark 7:01 pm
  • Civil dawn 6:29 am
  • Civil dusk 6:34 pm
  • Solar noon 12:32 pm (52° high)
  • Daylight 11 h 18 min (−1 min)
  • Evening golden hour 5:39 pm
  • Full dark 7:01 pm

Golden hour and the day-night map

Morning golden hour6:53–7:24 am
Evening golden hour5:39–6:10 pm
Yonakuni

Today the sun is 92,343,824 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Yonakuni

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 8:43 pm in the ENE (59°)ENE
Sets 11:09 am tomorrow · in the WNW (301°) · set at 10:03 am
Transit 2:51 am overhead
Visible 14 h 26 min from 8:43 pm to 11:09 am

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

Solunar periods

Today's activity: medium
  • 1:51–3:51 am Major · the moon passes overhead · high activity
  • 2:23–4:23 pm Major · the moon passes underfoot · high activity
  • 9:33–10:33 am Minor · moonset · medium activity
  • 8:13–9:13 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 Yonakuni

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

Drops off fast

The bottom drops off fast: the water is 33 ft deep just 30 ft from shore. It reaches 164 ft at 160 ft.

From the shoreline (0.3 mi from Yonakuni) out to sea, heading north.

How far from shore

  • 16 ft deep20 ft
  • 33 ft deep30 ft
  • 66 ft deep70 ft
  • 164 ft deep160 ft

For fishing, swimming and diving

  • Shore fishing. Deep water close in: about 202 ft just 330 ft out. Good for casting from rocks, jetties or the beach itself; current and surf hit harder here.
  • Swimming. The bottom drops quickly near the shore and you are soon out of your depth. Keep an eye on kids and weak swimmers.
  • Diving. Shore diving works here: 33 ft at 30 ft and 66 ft at 70 ft 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: NOAA ETOPO 2022 (CC0), cells of about 0.3 mi; depth below mean sea level. For reference only: not for navigation or anchoring.

Nearest lighthouse

Photo of Agarisaki lighthouse
Photo: Paipateroma · CC BY-SA 4.0

Agarisaki lighthouse 2.7 mi east

Light
A white flash every 8 s · Fl W 8s
Range
12 nautical miles (14 mi)
Light height
276 ft above sea level
Tower height
39 ft
Built
1972

Other lighthouses nearby: Irisaki Lighthouse (4.3 mi west).

Data from Wikidata. For reference only: not for navigation. Wikidata · Sources and licenses

Tides near YonakuniTides nearby

All places in Okinawa, A to Z (356) → Yonaguni Island tides →

Yonakuni at a glance

  • Town or city of about 1,684 people. Coordinates: 24.467° N, 123.000° E.
  • It is 316 mi west of Naha, the main place in Okinawa. The sun rises 17 min later and sets 21 min later than in Naha.
  • The nearest tide station, Yonaguni, is 3.8 mi to the west.
  • Its coast faces north.
  • Beaches and harbors nearby: Sonai Kō (0.4 mi), Kubura Gyokō (3.9 mi).

Questions about YonakuniQuestions

What time is high tide today in Yonakuni?

Today in Yonakuni there are high tides at 9:30 am (4.8 ft) and 8:37 pm (5.9 ft) and low tides at 2:56 am and 2:41 pm. Tide coefficient 93.

What time is sunset today in Yonakuni?

At 6:10 pm. There is light until the end of civil twilight, at 6:34 pm.

What time is sunrise tomorrow in Yonakuni?

At 6:53 am. First light comes at 6:03 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 1:51–3:51 am, Minor 9:33–10:33 am, Major 2:23–4:23 pm, Minor 8:13–9:13 pm. Today's activity is medium.

What's the weather like today in Yonakuni?

Overcast, from 77 °F to 79 °F, with a gentle breeze from the northeast (9 mph) and a 6% chance of rain.

How is the sea today in Yonakuni?

Moderate (Douglas 4): 4.4 ft waves with a period of 7.2 s from the northeast. The water is 81.5 °F.

When is the best time to visit Yonakuni?

Any time of year is good for Yonakuni: highs range from 68 °F to 88 °F through the year.

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: Yonaguni 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

Settings

How numbers and colors show across the site.

Height and distance Tides, waves and distances
Temperature Air and water
Wind Speed and gusts
Time Tides, sun and moon
Pressure Air pressure
Theme Automatic: same as your system

Saved only in this browser.