TidePlanet
Official alerts:
  • High Wave Advisory (波浪注意報) · Otaru City: waves up to 9.8 ft, take care. Until further notice. Japan Meteorological Agency (JMA), issued today at 4:12 am · Public Data License 1.0
    Official text

    Japanese

    石狩・空知・後志地方波浪警報・注意報

    石狩、後志地方では、高波に注意してください。
    小樽市:波浪注意報(継続)
    波高:3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.

  • Gale Advisory (強風注意報) · Otaru City: winds up to 34 mph at sea, take care. Until further notice. Japan Meteorological Agency (JMA), issued today at 7:22 am · Public Data License 1.0
    Official text

    Japanese

    石狩・空知・後志地方暴風(雪)警報・注意報

    石狩、空知、後志地方では、強風に注意してください。
    小樽市:強風注意報(継続)
    海上 最大風速:15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 Otaru there are high tides at 3:45 am (1.1 ft) and 7:23 pm (1.0 ft) and low tides at 11:25 am and 10:19 pm. Tide coefficient 115. Right now the tide is falling toward the low tide at 11:25 am. The sun rises at 6:06 am and sets at 4:32 pm: 10 h 26 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 6:22 pm. Major solunar periods run from 12:36 am to 2:36 am and from 1:08 pm to 3:08 pm. The next spring tides arrive from October 27 to 29. The sea is moderate, with 5.0 ft waves. There's a gentle breeze from the southwest (9 mph). Clear sky, 46 °F.

Fishing

Fishing in Otaru today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
6
Average day · 6 out of 10 9:20–11:20 pm Also 6:20–8:20 pm and 10:30 am–12:30 pm
  • Low tide at 10:19 pm
  • Steady pressure (30.03 inHg), light offshore wind (10 mph) and some swell (1.9 ft waves) to stir the water
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 115 (big spring tides)

Your day at a glance

The best window, 9:20 pm to 11:20 pm, combines the 10:19 pm low tide and some swell. Also good from 6:20 pm to 8:20 pm, with the 7:23 pm high tide, moonrise and some swell. Also worth a try from 10:30 am to 12:30 pm, with the 11:25 am low tide and some swell, though with rising pressure.

How it works · Next 7 days · Fishing rules

Beach

Beach day in Otaru

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
  • Cross-shore breeze (11 mph)
  • Low tide at 11:25 am: more sand
  • Feels like 44 °F: chilly for the beach
  • Rain (0.02 in)
  • Swim with care: 5.8 ft waves every 7 s

Today, hour by hour

  • Swimming Use care · 5.8 ft

    5.8 ft waves every 7 s: swim with care and stay where you can stand. Low rip current risk. Always follow the lifeguard's flags.

  • Water 59 °F

    Very cold: ease in and keep swims short.

  • Sun & sunscreen UV 2 · SPF 15

    Max UV 2 (low): SPF 15 sunscreen.

  • Wind 11 mph

    Cross-shore breeze (11 mph).

  • Tide & sand 11:25 am

    Low tide at 11:25 am and 10:19 pm: that's when there's the most sand. High tide at 3:45 am and 7:23 pm.

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 Otaru

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

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 Otaru

Tides for 7 days →

Today's high and low tides

  • ▲ High tide 3:45 am 1.1 ft · coef. 110
  • ▲ High tide 7:23 pm 1.0 ft · coef. 115
  • ▼ Low tide 10:19 pm 0.9 ft

↓ Falling The tide is falling. 2 h 38 min to low tide at 11:25 am.

Tide coefficient 110 for the 3:45 am high tide and 115 for the 7:23 pm high tide. Big spring tides. The water rises and falls 1.0 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 July 15 (1.4 ft) and the lowest, on April 19 (-0.3 ft).

Mixed, mainly diurnal: on many days there is only one high and one low tide.

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 come from October 29 to 31 (coefficient 116, 1.0 ft range). The smallest, on October 24 (coefficient 20, 0.4 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 6:06 am · 4:32 pm High tide 3:45 am · 1.1 ft Low tide 11:25 am · 0.1 ft High tide 7:23 pm · 1.0 ft Low tide 10:19 pm · 0.9 ft Coef. 115 88% Major periods 12:36 am · 1:08 pm Medium
Fri 30 6:08 am · 4:31 pm High tide 4:16 am · 1.1 ft Low tide 12:22 pm · 0.1 ft — — Coef. 116 80% Major periods 1:41 am · 2:13 pm High
Sat 31 6:09 am · 4:30 pm High tide 4:49 am · 1.1 ft Low tide 1:26 pm · 0.2 ft — — Coef. 115 69% Major periods 2:45 am · 3:15 pm Medium
Sun 1 6:10 am · 4:28 pm High tide 5:26 am · 1.1 ft Low tide 2:38 pm · 0.3 ft — — Coef. 108 58% Major periods 3:45 am · 4:14 pm Medium
Mon 2 6:11 am · 4:27 pm High tide 6:24 am · 1.0 ft Low tide 3:56 pm · 0.3 ft — — Coef. 94 Last quarter Major periods 4:41 am · 5:07 pm Medium
Tue 3 6:13 am · 4:26 pm High tide 9:04 am · 0.9 ft Low tide 5:20 pm · 0.3 ft — — Coef. 72 36% Major periods 5:32 am · 5:56 pm Medium
Wed 4 6:14 am · 4:24 pm High tide 1:12 am · 0.8 ft Low tide 6:45 am · 0.6 ft High tide 11:03 am · 0.8 ft Low tide 6:37 pm · 0.4 ft Coef. 57 26% Major periods 6:20 am · 6:42 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

A · Official station

Tides from the Otaru station (TICON-4), 1.2 mi from Otaru. 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 Otaru

7-day waves

Sea stateSea state: moderate

Moderate Douglas 4 · gentle breeze, Beaufort 3
Waves 5.0 ft · 6.9 s from the northwest (320°)
Swell 4.9 ft · 5.8 s from the northwest
Current 0.2 mph toward the NW

The waves you may find

  • Most commonMost common2.5 ft
  • Significant5.0 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

On the coast 9 mph SW · gusts 15

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

Cross-offshore wind. The coast faces north and the wind comes off the land at an angle: calmer water near the shore, and bait and boats drift out to sea.

Cross-offshore Hourly wind →

Wave height, next 7 daysWaves, next 7 days

Waves build over the next few days. The biggest waves arrive on Sunday 1: 8.5 ft with a period of 7 s, from the northwest (rough).

Water temperature

Water temperature →
Water now58.6 °F
Today 58.5–58.8 °F air: 42 / 51 °F
Satellite (2 days ago) 59.4 °F measured 0.8 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 56.8 °F by Wednesday 4.

Water about normal for late October.

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 8:45 am (local time).

Surf

Surf in Otaru today

Surf hour by hour and 7 days →

Surf today

Good
6
Good · 6 out of 10 8:00 am–12:00 pm 3.2–4.9 ft Also 1:00–2:00 pm
  • 3.2–4.9 ft surf at the shore, a good size with some punch
  • 4.9 ft swell at 6 s from the northwest, short: weak, messy waves
  • Light offshore wind (9 mph): it holds up and grooms the waves
  • Falling tide (low tide at 11:25 am)
Surf at the shore 3.2–4.9 ft average – sets
Swell 4.9 ft 6 s · NW · 149 kJ
Wind 9 mph SW · offshore
Water and wetsuit 58.5 °F 4/3 fullsuit
  • Light: First light 5:37 am · sunrise 6:06 am · sunset 4:32 pm · last light 5:02 pm
  • Tide: high 3:45 am (1.1 ft), low 11:25 am (0.1 ft), high 7:23 pm (1.0 ft) and low 10:19 pm (0.9 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 58.5 °F: a 4/3 fullsuit (booties if you run cold).
  • Energy: 149 kJ · Medium power

Today’s surf at a glance

The best window, 8:00 am to 12:00 pm, has a good size and light offshore wind, though with a short-period swell. 1:00 pm to 2:00 pm can also work, with a good size and light offshore wind, 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 Otaru today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: poor
6
Average day · 6 out of 10 11:00 am–12:00 pm Also 1:30–2:20 pm
  • Slack water around low tide (11:25 am): little current from 11:10 am to 11:40 am
  • 3.8 ft swell at 6 s from the northwest: some surge on the bottom
  • Light offshore wind (5 mph)
  • 0.2 mph current toward the northwest, weak (model)
  • Sun high: more light underwater
Swell 3.8 ft 6 s · from the NW
Likely visibility Poor Snorkeling: poor
Water and suit 58.5 °F 7 mm wetsuit
Current 0.2 mph toward the NW
  • Slack water today: high tide 3:45 am (3:30–4:00 am), low tide 11:25 am (11:10–11:40 am), high tide 7:23 pm (7:08–7:40 pm) and low tide 10:19 pm (9:40–11:00 pm)
  • Likely visibility: poor. Swell (up to 5.8 ft at 7 s), rain (0.66 in) and wind over the last few days have stirred up the water. Based on the last 24 hours of data.
  • Water at 58.5 °F: a 7 mm wetsuit, with hood and booties.
  • Snorkeling: better not, with these waves, wind or current.
  • Night dive: dark from 5:02 pm. Waning gibbous (88%), rising at 6:22 pm: a bright night.

Your diving day at a glance

The best window, 11:00 am to 12:00 pm, combines slack water at low tide, light wind, weak current and the sun high, though with some swell. Also worth a look from 1:30 pm to 2:20 pm, with light wind, weak current and the sun high, though with tidal 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 Otaru.

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 Otaru

14-day weather

Now in Otaru

Now 46 °F Clear sky · feels like 38 °F · 42 / 51 °F
Low / high
42 / 51 °F
Rain
0.40 in · 100%
Clouds
16%
Humidity
56%
Dew pointDew point
30 °F
Visibility
15 mi
UV indexUV
1 · low
Air qualityAir
Fair · 33
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 (+0.01 inHg in 3 hours). Over the next 48 hours: −0.54 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 Light drizzleLight drizzleLight drizzleClear skyOvercastOvercastLight drizzleLight rain
Temperature 42°43°43°46°49°49°49°49°
Wind (mph) 20 W22 W14 W8 SW5 SSW6 SSE7 SE11 SE
Gusts 2931271413141416
Waves 7.3 ft7.0 ft6.3 ft4.9 ft3.8 ft3.0 ft2.4 ft2.0 ft
Rain 0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.02 in0.09 in
  • 9:00 am 46° 8 SW 4.9 ft
  • 12:00 pm 49° 5 SSW 3.8 ft
  • 3:00 pm 49° 6 SSE 3.0 ft
  • 6:00 pm 49° 7 SE 2.4 ft
  • 9:00 pm 49° 11 SE 2.0 ft
  • 12:00 am 52° 6 SE 1.7 ft
  • 3:00 am 52° 8 S 1.5 ft
  • 6:00 am 54° 8 S 1.6 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Light rain 42 / 51 °F 22 mph SW 7.3 ft 3:45 am · 7:23 pm
Fri 30 Drizzle 52 / 62 °F 9 mph S 1.7 ft 4:16 am
Sat 31 Rain 42 / 55 °F 26 mph W 5.9 ft 4:49 am
Sun 1 Light snow 41 / 43 °F 31 mph WNW 8.5 ft 5:26 am
Mon 2 Light snow 42 / 48 °F 9 mph ESE 4.5 ft 6:24 am
Tue 3 Light snow 43 / 47 °F 23 mph WNW 3.9 ft 9:04 am
Wed 4 Drizzle 41 / 45 °F 24 mph W 4.0 ft 1:12 am · 11:03 am
Thu 5 Light drizzle 41 / 55 °F 12 mph SE 3.3 ft 1:11 am · 12:48 pm
Fri 6 Snow 40 / 53 °F 24 mph W 1.7 ft 1:21 am · 2:13 pm
Sat 7 Snow 38 / 40 °F 25 mph W 7.5 ft 1:33 am · 3:20 pm
Sun 8 Snow 36 / 40 °F 23 mph W 7.3 ft 1:46 am · 4:15 pm
Mon 9 Snow 36 / 38 °F 19 mph W 4.6 ft 2:00 am · 5:02 pm
Tue 10 Snow 36 / 40 °F 21 mph WNW 5.4 ft 2:17 am · 5:46 pm
Wed 11 Snow 35 / 41 °F 21 mph W 4.4 ft 2:36 am · 6:28 pm
  • Fri 30 Drizzle 52° / 62° 1.7 ft
  • Sat 31 Rain 42° / 55° 5.9 ft
  • Sun 1 Light snow 41° / 43° 8.5 ft
  • Mon 2 Light snow 42° / 48° 4.5 ft
  • Tue 3 Light snow 43° / 47° 3.9 ft
  • Wed 4 Drizzle 41° / 45° 4.0 ft
  • Thu 5 Light drizzle 41° / 55° 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.

  • The models They don't agree · low confidence: unsure about wind on Sunday 1. See the models →
  • Outlook Next few weeks, compared with normal: a bit cooler and normal rain. See the outlook →
  • Normal Today, cooler than normal for late October (−2.4 °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 8:45 am (local time).

Sun

The sun in Otaru

Sunrise and sunset →

Sunrise and sunset

Rises 6:06 am in the ESE (108°)ESE
Sets 4:32 pm in the WSW (252°)WSW
  • First light 5:04 am
  • Full dark 5:35 pm
  • Civil dawn 5:37 am
  • Civil dusk 5:02 pm
  • Solar noon 11:20 am (33° high)
  • Daylight 10 h 26 min (−3 min)
  • Evening golden hour 3:52 pm
  • Full dark 5:35 pm

Golden hour and the day-night map

Morning golden hour6:06–6:47 am
Evening golden hour3:52–4:32 pm
Otaru

Today the sun is 92,345,038 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Otaru

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 6:22 pm in the NE (51°)NE
Sets 10:59 am tomorrow · in the NW (309°) · set at 9:52 am
Transit 1:36 am overhead
Visible 16 h 37 min from 6:22 pm to 10:59 am

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

Solunar periods

Today's activity: medium
  • 12:36–2:36 am Major · the moon passes overhead · high activity
  • 1:08–3:08 pm Major · the moon passes underfoot · high activity
  • 9:22–10:22 am Minor · moonset · medium activity
  • 5:52–6:52 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 Otaru

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.

Nearest lighthouse

Photo of Hiyoriyama Lighthouse
Photo: Komatta · CC BY-SA 4.0

Hiyoriyama Lighthouse 3.4 mi north

Light
A white flash every 8 s · Fl W 8s
Range
19 nautical miles (22 mi)
Light height
164 ft above sea level
Tower height
33 ft
Built
1883

Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikidata · Sources and licenses

Tides near OtaruTides nearby

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

Otaru at a glance

  • Town or city of about 115,333 people. Coordinates: 43.189° N, 141.002° E.
  • It is 99 mi north of Hakodate, the main place in Hokkaido. The sun rises 1 min later and sets 3 min earlier than in Hakodate.
  • The nearest tide station, Otaru, is 1.2 mi to the north.
  • Its coast faces north.
  • Beaches and harbors nearby: Otaru-kō (1.0 mi).

Questions about OtaruQuestions

What time is high tide today in Otaru?

Today in Otaru there are high tides at 3:45 am (1.1 ft) and 7:23 pm (1.0 ft) and low tides at 11:25 am and 10:19 pm. Tide coefficient 115.

What time is sunset today in Otaru?

At 4:32 pm. There is light until the end of civil twilight, at 5:02 pm.

What time is sunrise tomorrow in Otaru?

At 6:08 am. First light comes at 5:05 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 12:36–2:36 am, Minor 9:22–10:22 am, Major 1:08–3:08 pm, Minor 5:52–6:52 pm. Today's activity is medium.

What's the weather like today in Otaru?

Light rain, from 42 °F to 51 °F, with a gentle breeze from the southwest (9 mph) and a 100% chance of rain.

How is the sea today in Otaru?

Moderate (Douglas 4): 5.0 ft waves with a period of 6.9 s from the northwest. The water is 58.6 °F.

When is the best time to visit Otaru?

The best time to visit Otaru is from June to September: highs of 68 °F to 77 °F, about 10 rainy days a month and 5 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: Otaru 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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