TidePlanet
Official alerts:
  • Gale Advisory (強風注意報) · Shiranuka Town: winds up to 27 mph on land, take care. Until further notice. Japan Meteorological Agency (JMA), issued today at 10:10 am · Public Data License 1.0
    Official text

    Japanese

    釧路・根室地方暴風(雪)警報・注意報

    釧路地方では、強風に注意してください。
    白糠町:強風注意報(発表)
    陸上 最大風速:12メートル

    出典:気象庁ホームページ (https://www.jma.go.jp/). TidePlanet has extracted this area’s warnings from the JMA’s, translated their names and converted their figures to the chosen units: this is not an official JMA publication.

Today in Shiranuka there are high tides at 5:48 am (4.2 ft) and 3:42 pm (4.8 ft) and low tides at 10:18 am and 11:19 pm. Tide coefficient 95. Right now the tide is rising toward the high tide at 3:42 pm. The sun rises at 5:54 am and sets at 4:21 pm: 10 h 27 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 6:10 pm. Major solunar periods run from 12:23 am to 2:23 am and from 12:55 pm to 2:55 pm. The next spring tides arrive from October 27 to 29. The sea is slight, with 2.7 ft waves. There's a gentle breeze from the south-southwest (8 mph). Overcast, 48 °F.

Fishing

Fishing in Shiranuka today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
7
Good day · 7 out of 10 3:40–4:40 pm Also 5:20–6:30 am and 9:20–10:10 am
  • High tide at 3:42 pm, coefficient 91
  • Sunset at 4:21 pm, golden hour from 3:40 pm
  • Rising pressure (+0.53 inHg in 24 h), light onshore wind (10 mph) and some swell (3.5 ft waves) to stir the water
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 95 (spring tides)

Your day at a glance

The best window, 3:40 pm to 4:40 pm, combines the 3:42 pm high tide, sunset, a light onshore breeze and some swell, though with rising pressure. Also worth a try from 5:20 am to 6:30 am, with the 5:48 am high tide, sunrise and some swell, though with rising pressure. Also worth a try from 9:20 am to 10:10 am, with the 10:18 am low tide, moonset and some swell, though with rising pressure.

How it works · Next 7 days · Fishing rules

Beach

Beach day in Shiranuka

Beach forecast, 7 days →

Is it a beach day?

0
Not a beach day · 0 out of 10 No good beach time today.
  • Sun and clouds
  • Onshore breeze (10 mph)
  • Low tide at 10:18 am: more sand
  • Feels like 41 °F: chilly for the beach
  • Swim with care: 2.9 ft waves every 8 s; moderate rip current risk
  • Water at 55 °F (very cold)

Today, hour by hour

  • Swimming Use care · 2.9 ft

    2.9 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 55 °F

    Very cold: ease in and keep swims short.

  • Sun & sunscreen UV 2 · SPF 15

    Max UV 2 (low): SPF 15 sunscreen.

  • Wind 10 mph

    Onshore breeze (10 mph).

  • Tide & sand 11:19 pm

    Low tide at 10:18 am and 11:19 pm: that's when there's the most sand. High tide at 5:48 am and 3:42 pm. Coefficient 95 (spring tides): little sand left at 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 Shiranuka

We don't know of any named beaches within 6.2 mi of Shiranuka.

Missing one? Beaches come from OpenStreetMap: you can add it there. Add or fix on OpenStreetMap

Beaches and amenities: © OpenStreetMap contributors (ODbL).

Tides

Tides in Shiranuka

Tides for 7 days →

Today's high and low tides

  • ▲ High tide 5:48 am 4.2 ft · coef. 95
  • ▼ Low tide 10:18 am 3.2 ft
  • ▼ Low tide 11:19 pm -0.1 ft

↑ Rising The tide is rising. 2 h 23 min to high tide at 3:42 pm.

Tide coefficient 95 for the 5:48 am high tide and 91 for the 3:42 pm high tide. Spring tides. The water rises and falls 4.9 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 December 25 (5.1 ft) and the lowest, on June 16 (-0.5 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 11 to 12 (coefficient 104, 4.2 ft range). The smallest, from October 19 to 20 (coefficient 23, 2.5 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 5:54 am · 4:21 pm High tide 5:48 am · 4.2 ft Low tide 10:18 am · 3.2 ft High tide 3:42 pm · 4.8 ft Low tide 11:19 pm · -0.1 ft Coef. 95 88% Major periods 12:23 am · 12:55 pm Medium
Fri 30 5:55 am · 4:19 pm High tide 6:45 am · 4.0 ft Low tide 10:44 am · 3.3 ft High tide 4:12 pm · 4.8 ft — Coef. 84 80% Major periods 1:28 am · 2:00 pm High
Sat 31 5:56 am · 4:18 pm Low tide 12:07 am · 0.1 ft High tide 7:49 am · 3.8 ft Low tide 11:10 am · 3.4 ft High tide 4:45 pm · 4.6 ft Coef. 70 69% Major periods 2:32 am · 3:03 pm Medium
Sun 1 5:57 am · 4:16 pm Low tide 1:01 am · 0.4 ft High tide 9:08 am · 3.6 ft Low tide 11:44 am · 3.5 ft High tide 5:24 pm · 4.3 ft Coef. 54 58% Major periods 3:32 am · 4:01 pm Medium
Mon 2 5:59 am · 4:15 pm Low tide 2:05 am · 0.8 ft High tide 10:38 am · 3.5 ft Low tide 1:18 pm · 3.5 ft High tide 6:17 pm · 3.8 ft Coef. 41 Last quarter Major periods 4:28 am · 4:54 pm Medium
Tue 3 6:00 am · 4:14 pm Low tide 3:19 am · 1.2 ft High tide 11:32 am · 3.6 ft Low tide 4:44 pm · 3.2 ft High tide 8:32 pm · 3.4 ft Coef. 39 36% Major periods 5:19 am · 5:44 pm Medium
Wed 4 6:01 am · 4:13 pm Low tide 4:33 am · 1.5 ft High tide 12:02 pm · 3.7 ft Low tide 6:11 pm · 2.6 ft High tide 11:22 pm · 3.3 ft Coef. 51 26% Major periods 6:07 am · 6:30 pm Medium

▲ 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

B · Nearby station

Shiranuka has no station of its own, so we use the tide at Kushiro (TICON-4), 14 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

How we calculate the tide

Sea and waves

The sea at Shiranuka

7-day waves

Sea stateSea state: slight

Slight Douglas 3 · gentle breeze, Beaufort 3
Waves 2.7 ft · 8.4 s from the south-southeast (155°)
Swell 1.7 ft · 10.0 s from the east
Current 0.1 mph toward the W

The waves you may find

  • Most commonMost common1.4 ft
  • Significant2.7 ft
  • Highest expectedHighest5.5 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 5.5 ft. Before heading out, expect waves of up to 5.5 ft.

Wind on the coast and offshore

On the coast 8 mph SSW · gusts 21
Offshore (8.5 mi ENE)Offshore 10 mph SSW · gusts 18

Cross-onshore wind. The coast faces south 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 build over the next few days. The biggest waves arrive on Saturday 31: 6.2 ft with a period of 8 s, from the south-southeast (moderate).

Water temperature

Water temperature →
Water now54.7 °F
Today 54.3–54.9 °F air: 33 / 51 °F
Satellite (2 days ago) 55.9 °F measured 0.9 mi away

Water temperature changes how fish behave: in very cold or very warm water they feed less. The water cools over the next few days: about 52.9 °F by Wednesday 4.

Water warmer than normal for late October (+1.1 °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 1:20 pm (local time).

Surf

Surf in Shiranuka today

Surf hour by hour and 7 days →

Surf today

Fair
4
Fair · 4 out of 10 5:24–8:00 am 1.4–2.1 ft Also 9:00 am–1:00 pm
  • 1.4–2.1 ft surf at the shore, a fun size for most surfers
  • 1.5 ft swell at 11 s from the east, average
  • Almost no wind (4 mph): glassy water
  • First or last light of the day
  • Falling tide (low tide at 10:18 am)
Surf at the shore 1.4–2.1 ft average – sets
Swell 1.5 ft 11 s · E · 47 kJ
Wind 4 mph WSW · calm
Water and wetsuit 54.3 °F 5/4 fullsuit + booties
  • Light: First light 5:24 am · sunrise 5:54 am · sunset 4:21 pm · last light 4:50 pm
  • Tide: high 5:48 am (4.2 ft), low 10:18 am (3.2 ft), high 3:42 pm (4.8 ft) and low 11:19 pm (-0.1 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 54.3 °F: a 5/4 fullsuit with booties (and a hood if it’s windy).
  • Energy: 47 kJ · Low power

Today’s surf at a glance

The best window, 5:24 am to 8:00 am, has glassy water. 9:00 am to 1:00 pm also works.

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 Shiranuka today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: good
9
Great day · 9 out of 10 8:40–11:40 am Also 3:00–4:20 pm and 5:50–6:50 am
  • Slack water around low tide (10:18 am): little current from 9:40 am to 10:50 am
  • 1.7 ft swell at 10 s from the east: some surge on the bottom
  • Light cross-shore wind (9 mph)
  • 0.1 mph current toward the south, weak (model)
  • Sun high: more light underwater
Swell 1.7 ft 10 s · from the E
Likely visibility Good Snorkeling: fair
Water and suit 54.3 °F 7 mm semi-dry suit
Current 0.1 mph toward the S
  • Slack water today: high tide 5:48 am (5:20–6:20 am), low tide 10:18 am (9:40–10:50 am), high tide 3:42 pm (3:20–4:00 pm) and low tide 11:19 pm (11:00–11:40 pm)
  • Likely visibility: good. Swell (up to 3.0 ft at 8 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
  • Water at 54.3 °F: a 7 mm semi-dry suit, with hood, gloves and booties.
  • Snorkeling: doable, with some waves or wind.
  • Night dive: dark from 4:50 pm. Waning gibbous (88%), rising at 6:10 pm: a bright night.

Your diving day at a glance

The best window, 8:40 am to 11:40 am, combines slack water at low tide, light wind, weak current and the sun high. Also good from 3:00 pm to 4:20 pm, with slack water at high tide, light wind and weak current. Also good from 5:50 am to 6:50 am, with slack water at high tide, light wind and weak 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

We have no dive sites, dive shops or wrecks on record within 12 mi of Shiranuka.

If you know one, you can add it to OpenStreetMap and it will show up here after the next update. Missing one? Add it to OpenStreetMap

Sites: © OpenStreetMap contributors (ODbL).

Weather

Weather in Shiranuka

14-day weather

Now in Shiranuka

Now 48 °F Overcast · feels like 41 °F · 33 / 51 °F
Low / high
33 / 51 °F
Rain
0.03 in · 56%
Clouds
91%
Humidity
47%
Dew pointDew point
29 °F
Visibility
15 mi
UV indexUV
1 · low
Air qualityAir
Fair · 31
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). Over the next 48 hours: −0.68 inHg. 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 ClearPartly cloudyMainly clearClear skyOvercastOvercastPartly cloudyOvercast
Temperature 35°34°33°43°48°48°47°50°
Wind (mph) 8 WSW8 WSW3 WSW9 WSW8 WSW10 S11 SSW13 SSW
Gusts 201571920222228
Waves 3.2 ft2.6 ft2.5 ft2.5 ft2.4 ft3.1 ft4.1 ft4.8 ft
Rain 0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in
  • 3:00 pm 48° 10 S 3.1 ft
  • 6:00 pm 47° 11 SSW 4.1 ft
  • 9:00 pm 50° 13 SSW 4.8 ft
  • 12:00 am 51° 15 SSW 5.4 ft
  • 3:00 am 50° 10 SW 5.4 ft
  • 6:00 am 49° 6 WSW 5.4 ft
  • 9:00 am 56° 6 SSW 5.2 ft
  • 12:00 pm 58° 8 S 5.1 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Light drizzle 33 / 51 °F 15 mph SW 5.2 ft 5:48 am · 3:42 pm
Fri 30 Heavy drizzle 49 / 58 °F 15 mph SSW 6.1 ft 6:45 am · 4:12 pm
Sat 31 Drizzle 40 / 63 °F 15 mph W 6.2 ft 7:49 am · 4:45 pm
Sun 1 Clear sky 33 / 45 °F 20 mph W 5.1 ft 9:08 am · 5:24 pm
Mon 2 Overcast 30 / 46 °F 7 mph NNE 4.3 ft 10:38 am · 6:17 pm
Tue 3 Light drizzle 34 / 52 °F 13 mph WNW 5.2 ft 11:32 am · 8:32 pm
Wed 4 Partly cloudy 30 / 48 °F 13 mph WNW 4.0 ft 12:02 pm · 11:22 pm
Thu 5 Light drizzle 29 / 48 °F 5 mph NNE 3.3 ft 12:27 pm
Fri 6 Light drizzle 37 / 53 °F 11 mph W 6.0 ft 12:56 am · 12:52 pm
Sat 7 Clear sky 33 / 42 °F 15 mph W 5.4 ft 2:00 am · 1:16 pm
Sun 8 Heavy snow 33 / 42 °F 14 mph W 3.2 ft 2:53 am · 1:40 pm
Mon 9 Heavy snow 24 / 38 °F 6 mph NW 2.8 ft 3:40 am · 2:04 pm
Tue 10 Snow 24 / 35 °F 11 mph N 4.3 ft 4:25 am · 2:28 pm
Wed 11 Mainly clear 23 / 37 °F 8 mph W 3.7 ft 5:08 am · 2:54 pm
  • Fri 30 Heavy drizzle 49° / 58° 6.1 ft
  • Sat 31 Drizzle 40° / 63° 6.2 ft
  • Sun 1 Clear sky 33° / 45° 5.1 ft
  • Mon 2 Overcast 30° / 46° 4.3 ft
  • Tue 3 Light drizzle 34° / 52° 5.2 ft
  • Wed 4 Partly cloudy 30° / 48° 4.0 ft
  • Thu 5 Light drizzle 29° / 48° 3.3 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.

  • Normal Today, cooler than normal for late October (−3.2 °F; normal high: 54 °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 1:20 pm (local time).

Sun

The sun in Shiranuka

Sunrise and sunset →

Sunrise and sunset

Rises 5:54 am in the ESE (108°)ESE
Sets 4:21 pm in the WSW (252°)WSW
  • First light 4:51 am
  • Full dark 5:23 pm
  • Civil dawn 5:24 am
  • Civil dusk 4:50 pm
  • Solar noon 11:07 am (34° high)
  • Daylight 10 h 27 min (−3 min)
  • Evening golden hour 3:40 pm
  • Full dark 5:23 pm

Golden hour and the day-night map

Morning golden hour5:54–6:34 am
Evening golden hour3:40–4:21 pm
Shiranuka

Today the sun is 92,345,246 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Shiranuka

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 6:10 pm in the NE (51°)NE
Sets 10:45 am tomorrow · in the NW (309°) · set at 9:38 am
Transit 1:23 am overhead
Visible 16 h 35 min from 6:10 pm to 10:45 am

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

Solunar periods

Today's activity: medium
  • 12:23–2:23 am Major · the moon passes overhead · high activity
  • 12:55–2:55 pm Major · the moon passes underfoot · high activity
  • 9:08–10:08 am Minor · moonset · medium activity
  • 5:40–6:40 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 Shiranuka

All places in Hokkaido →

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 0.5 mi from shore and 33 ft at 0.85 mi.

From the shoreline (0.7 mi from Shiranuka) out to sea, heading south.

How far from shore

  • 16 ft deep0.5 mi
  • 33 ft deep0.85 mi
  • 66 ft deep2.3 mi
  • 164 ft deepnot within 3.1 mi

For fishing, swimming and diving

  • Shore fishing. Shallow, gradual bottom (16 ft at 0.5 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 0.85 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 ShiranukaTides nearby

All places in Hokkaido, A to Z (561) →

Shiranuka at a glance

  • Town or city of about 7,972 people. Coordinates: 42.963° N, 144.089° E.
  • It is 190 mi northeast of Hakodate, the main place in Hokkaido. The sun rises 11 min earlier and sets 15 min earlier than in Hakodate.
  • The nearest tide station, Kushiro, is 14 mi to the east.
  • Its coast faces south.
  • Beaches and harbors nearby: Shiranuka Gyokō (0.8 mi).

Questions about ShiranukaQuestions

What time is high tide today in Shiranuka?

Today in Shiranuka there are high tides at 5:48 am (4.2 ft) and 3:42 pm (4.8 ft) and low tides at 10:18 am and 11:19 pm. Tide coefficient 95.

What time is sunset today in Shiranuka?

At 4:21 pm. There is light until the end of civil twilight, at 4:50 pm.

What time is sunrise tomorrow in Shiranuka?

At 5:55 am. First light comes at 4:52 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 12:23–2:23 am, Minor 9:08–10:08 am, Major 12:55–2:55 pm, Minor 5:40–6:40 pm. Today's activity is medium.

What's the weather like today in Shiranuka?

Light drizzle, from 33 °F to 51 °F, with a gentle breeze from the south-southwest (8 mph) and a 56% chance of rain.

How is the sea today in Shiranuka?

Slight (Douglas 3): 2.7 ft waves with a period of 8.4 s from the south-southeast. The water is 54.7 °F.

When is the best time to visit Shiranuka?

The best time to visit Shiranuka is in August: highs of 72 °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: Kushiro 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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Time Tides, sun and moon
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