TidePlanet
Official alerts:
  • High Wave Advisory (波浪注意報) · Omu Town: waves up to 13 ft, take care. Until further notice. Japan Meteorological Agency (JMA), issued today at 4:11 am · Public Data License 1.0
    Official text

    Japanese

    網走・北見・紋別地方波浪警報・注意報

    網走、紋別地方では、高波に注意してください。
    雄武町:波浪注意報(継続)
    波高:4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) · Omu Town: winds up to 34 mph at sea, take care. Until further notice. Japan Meteorological Agency (JMA), issued today at 4:11 am · Public Data License 1.0
    Official text

    Japanese

    網走・北見・紋別地方暴風(雪)警報・注意報

    網走、紋別地方では、強風に注意してください。
    雄武町: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 Ōmu there is high tide at 3:12 pm (4.4 ft) and low tide at 11:23 pm. Tide coefficient 113. Right now the tide is rising toward the high tide at 3:12 pm. The sun rises at 6:01 am and sets at 4:22 pm: 10 h 21 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 6:07 pm. Major solunar periods run from 12:28 am to 2:28 am and from 1:00 pm to 3:00 pm. The next spring tides arrive from October 27 to 29. The sea is moderate, with 5.9 ft waves. There's a gentle breeze from the west-southwest (8 mph). Clear sky, 38 °F.

Fishing

Fishing in Ōmu today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
7
Good day · 7 out of 10 2:10–3:00 pm Also 10:20 pm–12:00 am
  • High tide at 3:12 pm, coefficient 113
  • Major period 1:00–3:00 pm
  • Rising pressure (+0.42 inHg in 24 h), light offshore wind (6 mph) and some swell (4.5 ft waves) to stir the water
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 113 (big spring tides)

Your day at a glance

The best window, 2:10 pm to 3:00 pm, combines the 3:12 pm high tide, a major period and some swell, though with rising pressure. Also good from 10:20 pm to 12:00 am, with the 11:23 pm low tide and some swell.

How it works · Next 7 days · Fishing rules

Beach

Beach day in Ōmu

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
  • Feels like 40 °F: chilly for the beach
  • Rain (0.01 in)
  • Light offshore wind (12 mph): it blows floats and inflatables out to sea
  • Dangerous for swimming: 6.0 ft waves every 9 s; high rip current risk
  • Water at 53 °F (very cold)

Dangerous surf during beach hours. Stay out if the red flag is up, and never swim where there is no lifeguard.

Today, hour by hour

  • Swimming Dangerous · 6.0 ft

    6.0 ft waves every 9 s: dangerous for swimming. Stay out if the red flag is up. High rip current risk. If you're caught in a rip current, don't swim against it: swim parallel to shore and wave for help. Always follow the lifeguard's flags.

  • Water 53 °F

    Very cold: ease in and keep swims short.

  • Sun & sunscreen UV 1 · SPF 15

    Max UV 1 (low): SPF 15 sunscreen.

  • Wind 12 mph

    Offshore breeze (12 mph). Watch floats and inflatables: offshore wind carries them out to sea.

  • Tide & sand 11:23 pm

    Low tide at 11:23 pm: that's when there's the most sand. High tide at 3:12 pm. Coefficient 113 (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 Ōmu

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

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 Ōmu

Tides for 7 days →

Today's high and low tides

  • ▼ Low tide 11:23 pm 0.1 ft

↑ Rising The tide is rising. 7 h 19 min to high tide at 3:12 pm.

Tide coefficient 113 for the 3:12 pm high tide. Big spring tides. The water rises and falls 4.3 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 (4.8 ft) and the lowest, on May 18 (-0.4 ft).

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

Heights above chart datum (CD), the zero of that port's nautical charts. 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 (CD)

Tide coefficient and range in October

The biggest tides of the month come from October 29 to 30 (coefficient 115, 4.3 ft range). The smallest, from October 23 to 24 (coefficient 21, 1.2 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 6:01 am · 4:22 pm High tide 3:12 pm · 4.4 ft Low tide 11:23 pm · 0.1 ft — — Coef. 113 88% Major periods 12:28 am · 1:00 pm Medium
Fri 30 6:02 am · 4:21 pm High tide 3:50 pm · 4.5 ft — — — Coef. 115 80% Major periods 1:32 am · 2:05 pm High
Sat 31 6:04 am · 4:19 pm Low tide 12:15 am · 0.3 ft High tide 4:33 pm · 4.4 ft — — Coef. 112 69% Major periods 2:36 am · 3:07 pm Medium
Sun 1 6:05 am · 4:18 pm Low tide 1:13 am · 0.6 ft High tide 5:23 pm · 4.1 ft — — Coef. 103 58% Major periods 3:37 am · 4:06 pm Medium
Mon 2 6:06 am · 4:16 pm Low tide 2:21 am · 0.9 ft High tide 6:31 pm · 3.7 ft — — Coef. 88 Last quarter Major periods 4:33 am · 4:59 pm Medium
Tue 3 6:08 am · 4:15 pm Low tide 3:52 am · 1.2 ft High tide 8:13 pm · 3.3 ft — — Coef. 66 36% Major periods 5:24 am · 5:48 pm Medium
Wed 4 6:09 am · 4:14 pm Low tide 5:05 am · 1.4 ft High tide 12:38 pm · 2.7 ft Low tide 4:45 pm · 2.4 ft High tide 10:08 pm · 3.0 ft Coef. 49 26% Major periods 6:12 am · 6:34 pm Medium

▲ high tide · ▼ low tide · heights above chart datum (CD). 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

Ōmu has no station of its own, so we use the tide at Monbetsu (JMA), 25 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: Source: Japan Meteorological Agency website (出典:気象庁ホームページ), tide table (潮位表) for Monbetsu (紋別), https://www.data.jma.go.jp/kaiyou/db/tide/suisan/suisan.php?stn=A0. Public Data License (Version 1.0) (https://www.digital.go.jp/resources/open_data/public_data_license_v1.0), compatible with CC BY 4.0. Modified by TidePlanet (気象庁「潮位表」を加工して作成): harmonic constants fitted from the hourly prediction of 2025–2026; not an official JMA product.

How we calculate the tide

Sea and waves

The sea at Ōmu

7-day waves

Sea stateSea state: moderate

Moderate Douglas 4 · gentle breeze, Beaufort 3
Waves 5.9 ft · 9.1 s from the north-northeast (23°)
Swell 5.2 ft · 8.4 s from the northeast
Current 0.6 mph toward the SE

The waves you may find

  • Most commonMost common3.0 ft
  • Significant5.9 ft
  • Highest expectedHighest12 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 12 ft. Before heading out, expect waves of up to 12 ft.

Wind on the coast and offshore

On the coast 8 mph WSW · gusts 17
Offshore (12 mi N)Offshore 11 mph W · gusts 21

Offshore wind. The coast faces northeast 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 stay much the same all week. The biggest waves arrive on Thursday 29: 7.2 ft with a period of 9 s, from the north-northeast (moderate).

Water temperature

Water temperature →
Water now52.5 °F
Today 52.5–52.7 °F air: 34 / 46 °F
Satellite (2 days ago) 51.3 °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 48.7 °F by Wednesday 4.

Water warmer than normal for late October (+3.8 °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 7:52 am (local time).

Surf

Surf in Ōmu today

Surf hour by hour and 7 days →

Surf today

Good
7
Good · 7 out of 10 6:00–10:00 am 3.9–6.0 ft
  • 3.9–6.0 ft surf at the shore, a good size with some punch
  • 5.2 ft swell at 9 s from the northeast, a bit short
  • Light offshore wind (7 mph): it holds up and grooms the waves
  • Rising tide (high tide at 3:12 pm)
Surf at the shore 3.9–6.0 ft average – sets
Swell 5.2 ft 9 s · NE · 373 kJ
Wind 7 mph WSW · offshore
Water and wetsuit 52.5 °F 5/4 fullsuit + booties
  • Light: First light 5:31 am · sunrise 6:01 am · sunset 4:22 pm · last light 4:52 pm
  • Tide: high 3:12 pm (4.4 ft) and low 11:23 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 52.5 °F: a 5/4 fullsuit with booties (and a hood if it’s windy).
  • Energy: 373 kJ · Medium power

Today’s surf at a glance

The best window, 6:00 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.

How it’s calculated · Next 7 days

Diving

Diving in Ōmu today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: poor
4
Fair day · 4 out of 10 2:30–3:40 pm Also 8:30–9:10 am
  • Slack water around high tide (3:12 pm): little current from 2:57 pm to 3:27 pm
  • 4.1 ft swell at 8 s from the northeast: strong surge on the bottom
  • Light offshore wind (6 mph)
  • 0.1 mph current toward the north, weak (model)
  • Daylight
Swell 4.1 ft 8 s · from the NE
Likely visibility Poor Snorkeling: poor
Water and suit 52.5 °F 7 mm semi-dry suit
Current 0.1 mph toward the N
  • Slack water today: high tide 3:12 pm (2:57–3:27 pm) and low tide 11:23 pm (11:08–11:38 pm)
  • Likely visibility: poor. Swell (up to 6.1 ft at 9 s) and rain (0.33 in) over the last few days have stirred up the water. Based on the last 24 hours of data.
  • Water at 52.5 °F: a 7 mm semi-dry suit, with hood, gloves and booties.
  • Snorkeling: better not, with these waves, wind or current.
  • Night dive: dark from 4:52 pm. Waning gibbous (88%), rising at 6:07 pm: a bright night.

Your diving day at a glance

The best window, 2:30 pm to 3:40 pm, combines slack water at high tide, light wind and weak current, though with some swell. Also worth a look from 8:30 am to 9:10 am, with light wind, weak current and the sun high, though with a big swell.

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 Ōmu.

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 Ōmu

14-day weather

Now in Ōmu

Now 38 °F Clear sky · feels like 30 °F · 34 / 46 °F
Low / high
34 / 46 °F
Rain
0.08 in · 99%
Clouds
19%
Humidity
65%
Dew pointDew point
27 °F
Visibility
15 mi
UV indexUV
1 · low
Air qualityAir
Fair · 28
Saharan dust
No

Pressure and fishing

  • ↗ RisingRising · now Anglers say fish bite less for a while
  • → SteadySteady Anglers expect normal activity
  • ↘ FallingFalling Anglers say fish feed more before the change

Rising now (+0.06 inHg in 3 hours). Over the next 48 hours: −0.54 inHg. Rising pressure: anglers say fish bite less for a while. 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 cloudyPartly cloudyClear skyOvercastOvercastLight drizzleLight drizzle
Temperature 34°34°35°40°45°46°44°42°
Wind (mph) 10 W6 W7 W9 WSW12 WSW5 SSW4 SE7 S
Gusts 2213151926221219
Waves 7.2 ft6.8 ft6.0 ft5.8 ft5.2 ft4.5 ft4.2 ft4.0 ft
Rain 0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.01 in0.01 in
  • 9:00 am 40° 9 WSW 5.8 ft
  • 12:00 pm 45° 12 WSW 5.2 ft
  • 3:00 pm 46° 5 SSW 4.5 ft
  • 6:00 pm 44° 4 SE 4.2 ft
  • 9:00 pm 42° 7 S 4.0 ft
  • 12:00 am 43° 9 S 3.7 ft
  • 3:00 am 46° 6 SSW 3.5 ft
  • 6:00 am 42° 6 SSW 3.2 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Light drizzle 34 / 46 °F 12 mph SW 7.2 ft 3:12 pm
Fri 30 Light drizzle 42 / 61 °F 9 mph SSW 3.7 ft 3:50 pm
Sat 31 Drizzle 38 / 57 °F 14 mph WSW 3.1 ft 4:33 pm
Sun 1 Light drizzle 33 / 40 °F 19 mph W 6.6 ft 5:23 pm
Mon 2 Overcast 33 / 47 °F 8 mph SW 5.2 ft 6:31 pm
Tue 3 Drizzle 34 / 43 °F 13 mph W 4.7 ft 8:13 pm
Wed 4 Light drizzle 32 / 40 °F 16 mph W 3.1 ft 12:38 pm · 10:08 pm
Thu 5 Overcast 31 / 51 °F 9 mph S 1.9 ft 12:16 pm
Fri 6 Heavy drizzle 34 / 54 °F 13 mph WSW 1.4 ft 12:13 am · 12:19 pm
Sat 7 Light snow 31 / 37 °F 14 mph W 5.9 ft 1:55 am · 12:38 pm
Sun 8 Light snow 31 / 36 °F 17 mph WSW 5.1 ft 3:05 am · 1:04 pm
Mon 9 Light snow 30 / 35 °F 9 mph W 3.2 ft 4:01 am · 1:33 pm
Tue 10 Light snow 29 / 38 °F 9 mph WSW 3.1 ft 5:01 am · 2:04 pm
Wed 11 Light snow 28 / 35 °F 8 mph WSW 3.2 ft 2:36 pm
  • Fri 30 Light drizzle 42° / 61° 3.7 ft
  • Sat 31 Drizzle 38° / 57° 3.1 ft
  • Sun 1 Light drizzle 33° / 40° 6.6 ft
  • Mon 2 Overcast 33° / 47° 5.2 ft
  • Tue 3 Drizzle 34° / 43° 4.7 ft
  • Wed 4 Light drizzle 32° / 40° 3.1 ft
  • Thu 5 Overcast 31° / 51° 1.9 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 Partly agree · medium confidence: unsure about rain on Saturday 31. See the models →
  • Outlook Next few weeks, compared with normal: a bit cooler, normal rain and a slightly cooler sea. See the outlook →
  • Normal Today, cooler than normal for late October (−5.2 °F; normal high: 51 °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 7:52 am (local time).

Sun

The sun in Ōmu

Sunrise and sunset →

Sunrise and sunset

Rises 6:01 am in the ESE (108°)ESE
Sets 4:22 pm in the WSW (252°)WSW
  • First light 4:57 am
  • Full dark 5:26 pm
  • Civil dawn 5:31 am
  • Civil dusk 4:52 pm
  • Solar noon 11:12 am (32° high)
  • Daylight 10 h 21 min (−3 min)
  • Evening golden hour 3:41 pm
  • Full dark 5:26 pm

Golden hour and the day-night map

Morning golden hour6:01–6:42 am
Evening golden hour3:41–4:22 pm
Ōmu

Today the sun is 92,345,170 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Ōmu

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 6:07 pm in the NE (50°)NE
Sets 10:57 am tomorrow · in the NW (310°) · set at 9:51 am
Transit 1:28 am overhead
Visible 16 h 50 min from 6:07 pm to 10:57 am

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

Solunar periods

Today's activity: medium
  • 12:28–2:28 am Major · the moon passes overhead · high activity
  • 1:00–3:00 pm Major · the moon passes underfoot · high activity
  • 9:21–10:21 am Minor · moonset · medium activity
  • 5:37–6:37 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 Ōmu

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 0.3 mi from shore and 33 ft at 0.65 mi.

From the shoreline (0.4 mi from Ōmu) out to sea, heading northeast.

How far from shore

  • 16 ft deep0.3 mi
  • 33 ft deep0.65 mi
  • 66 ft deep1.3 mi
  • 164 ft deepnot within 3.1 mi

For fishing, swimming and diving

  • Shore fishing. Shallow, gradual bottom (16 ft at 0.3 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 0.65 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.

Nearest lighthouse

Otoineppu Misaki 3.5 mi northwest

Light
White light, on and off for equal times, every 4 s · Iso W 4s
Range
15 nautical miles (17 mi)
Light height
95 ft above sea level
Tower height
49 ft

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

Tides near ŌmuTides nearby

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

Ōmu at a glance

  • Town or city of about 4,596 people. Coordinates: 44.578° N, 142.961° E.
  • It is 224 mi northeast of Hakodate, the main place in Hokkaido. The sun rises 4 min earlier and sets 14 min earlier than in Hakodate.
  • The nearest tide station, Monbetsu, is 25 mi to the southeast.
  • Its coast faces northeast.
  • Beaches and harbors nearby: Ōmu Gyokō (0.7 mi), Motoineppu Gyokō (2.0 mi).

Questions about ŌmuQuestions

What time is high tide today in Ōmu?

Today in Ōmu there is high tide at 3:12 pm (4.4 ft) and low tide at 11:23 pm. Tide coefficient 113.

What time is sunset today in Ōmu?

At 4:22 pm. There is light until the end of civil twilight, at 4:52 pm.

What time is sunrise tomorrow in Ōmu?

At 6:02 am. First light comes at 4:58 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 12:28–2:28 am, Minor 9:21–10:21 am, Major 1:00–3:00 pm, Minor 5:37–6:37 pm. Today's activity is medium.

What's the weather like today in Ōmu?

Light drizzle, from 34 °F to 46 °F, with a gentle breeze from the west-southwest (8 mph) and a 99% chance of rain.

How is the sea today in Ōmu?

Moderate (Douglas 4): 5.9 ft waves with a period of 9.1 s from the north-northeast. The water is 52.5 °F.

When is the best time to visit Ōmu?

The best time to visit Ōmu is from July to August: highs of 69 °F to 74 °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: Monbetsu point of the Japan Meteorological Agency (JMA) tide tables. 出典:気象庁ホームページ, under the Public Data License 1.0 (compatible with CC BY 4.0); constants fitted by TidePlanet from two years of its hourly predictions (気象庁「潮位表」を加工して作成). Not an official JMA publication. 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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