Staying Home Sucks, home
ISS039-E-12297 - View of Japan
Hirara, the nearest town, 17 km away. Photo: Earth Science and Remote Sensing Unit, Lyndon B. Johnson Space Center, Public domain, Wikimedia Commons

通り池

Dive site · Japan

Experienced divers only

Is it worth the trip?

85Good out of 100 for your dates

Home sucks

Best on Thu 5: Sea 0.5 m, Visibility about 30 m, Water 26 °C

Each day of your trip, out of 100

Tue 3 · 85 out of 100

Sea
0.8 m
Wind
16 kn
Gusts
20kn
Air
26°C

Wed 4 · 87 out of 100

Sea
0.6 m
Wind
12 kn
Gusts
16kn
Air
26°C

Thu 5 · 89 out of 100

Sea
0.5 m
Wind
7 kn
Gusts
9kn
Air
26°C

Fri 6 · 85 out of 100

Sea
0.8 m
Wind
15 kn
Gusts
23kn
Air
26°C

Sat 7 · 76 out of 100

Sea
1.1 m
Wind
22 kn
Gusts
32kn
Air
26°C

Sun 8 · 84 out of 100

Sea
0.8 m
Wind
16 kn
Gusts
23kn
Air
25°C

Mon 9 · 83 out of 100

Sea
0.8 m
Wind
18 kn
Gusts
24kn
Air
25°C

Tap a day for sea, wind and water. Full forecast

Forecast: next 10 days

Full forecast
  1. Mon 288, good
  2. Tue 385, good
  3. Wed 487, good
  4. Thu 589, good
  5. Fri 685, good
  6. Sat 776, good
  7. Sun 884, good
  8. Mon 983, good
  9. Tue 1086, good
  10. Wed 1185, good

The site in five facts

  • Down to 40 mits deepest
  • From a boathow you get in
  • Experienced / deepexperienced divers only
  • Water 26 °C3 mm wetsuit
  • Faces Wswell from there reaches it

Full forecast

every day, every number

The score doesn't know currents, the visibility on the day or your certification.

Suits experienced divers only, as a dive guide states it. Scored for experienced divers.

Sea and wind forecast and score for each day at 通り池
DayScoreSeaWindGustsAir
Mon 2Nov88, good0.5 m5 kn8kn27°C
Tue 3Nov85, good0.8 m16 kn20kn26°C
Wed 4Nov87, good0.6 m12 kn16kn26°C
Thu 5Nov89, good0.5 m7 kn9kn26°C
Fri 6Nov85, good0.8 m15 kn23kn26°C
Sat 7Nov76, good1.1 m22 kn32kn26°C
Sun 8Nov84, good0.8 m16 kn23kn25°C
Mon 9Nov83, good0.8 m18 kn24kn25°C
Tue 10Nov86, good0.7 m15 kn21kn25°C
Wed 11Nov85, good–18 kn25kn24°C

Sea is the waves near the site, in metres; wind and gusts in knots. "Boats in": gusts that keep dive boats in. More

Tide

  • Mon 2 NovLow 05:49 −0.7 mHigh 12:59 +0.4 mLow 18:28 −0.0 m
  • Tue 3 NovHigh 00:03 +0.4 mLow 07:13 −0.6 mHigh 14:11 +0.5 mLow 20:05 −0.2 m
  • Wed 4 NovHigh 01:50 +0.4 mLow 08:29 −0.5 mHigh 15:04 +0.5 mLow 21:13 −0.4 m

Local clock times; heights about mean sea level. On open coasts the times are usually within a quarter of an hour; in bays, estuaries and on the Gulf of Mexico they can be an hour or more out. Slack water, the safest time to dive where there is current, is about half an hour either side of each high and low. Tide: EOT20 global ocean tide model, Hart-Davis et al. 2021, DGFI-TUM (doi:10.17882/79489), CC BY 4.0. Times and heights computed by us. A model, not a tide table: check a local table before you go.

Forecast updated . It refreshes every three hours. Forecast data: ECMWF, DWD, Météo-France and NOAA, served by Open-Meteo.com (CC BY 4.0). Changed by us. Generated using E.U. Copernicus Marine Service Information.

Map

the site and its town

Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.

The map needs JavaScript. Every place on it is listed on this page, and each place's page links to Google Maps.

One finger scrolls the page; two fingers move the map. Pins are our own positions. Map OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors.

More diving near here

5 places

About

the place in full, sources, credits

About 通り池

A cave dive. It goes down to 40 m. You get in from a boat. It suits experienced divers only, as a dive guide states it. The coast faces W: swell from the W reaches it, and wind from the E blows out to sea. No dive centre within 10 km, the nearest 14 km away. The sea is about 23°C in January, its coldest month (5 mm wetsuit), and 30°C in August, its warmest (rash vest or 1 to 2 mm). The town to stay in is Hirara. Within 5 km we also list 2 dive sites.

  • What it is Cave.
  • How deep Down to 40 m.
  • Getting in From a boat.
  • Who it suits Suits experienced divers only, as a dive guide states it.
  • Dive centres No dive centre within 10 km, the nearest 14 km away.

Water about 26°C: 3 mm wetsuit. Typical sea temperature for the time of year, not a forecast.

Visibility about 30 m. Typical for the time of year, estimated from ten years of NASA satellite water clarity, not a forecast. Clearest in Aug and Sep (over 30 m).

The score is the conditions only: the journey, the price and the partners never change it (how we score, how we earn).

Rough cost (estimate): about US$1,310–US$2,540 each

about US$1,310–US$2,540 each · 6 nights, 2 sharing: flights, hire car, stay, food.

Our estimate from typical public prices, not a quote: check the real prices before you book (where they come from). Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 30 October 2026.

How we worked it out 
Rough cost per person for this trip
WhatHow we worked it outEach
Flightsreturn ORD to ISG, estimated from distance and season, changing at HKG, full-service airlines, with a hold bagabout US$757–US$1,570
Hire car6 days, sharedabout US$107–US$174
Stay6 nights, a mid-range double, sharedabout US$208–US$348
Food7 days eating outabout US$234–US$442
Totalabout US$1,310–US$2,540

Guided dives are not priced yet: we have no sourced price, so it is not in it. Prices from public sources, checked in 2026.

Where to stay: Hirara

Closest

Hirara

about 30 min by car · 18 places to stay

about US$80/nightcountry average

See 18 places to stay in Hirara · Booking.com

About Hirara its beds, food and every spot near it

About US$80 a night is our estimate of the country's average 2-star double room that month: not each town's price, and not a quote. Drives are estimates. Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 30 October 2026.

Getting there: about 27h 15m

About 27h 15m door to door from Chicago

Fly ORD → ISG, changing at Hong Kong International Airport (HKG), then 2h 05m by road

An estimate, one way; the journey never changes the score.

In the water

Dive centres nearby

  • Pipeline 14 km

  • MARINECLUB 17 km

  • シギラ ビーチハウス 24 km

The nearest named dive centres and shops within 25 km, in a straight line; training agencies where the map states them. Listings, not a recommendation. Dive centres: © OpenStreetMap contributors (ODbL). Credits

What you might see

Too few open records near this site to list its animals. Ask a dive centre what you are likely to see.

This week's visibility, the current and the life no free forecast gives. Ask a dive centre before you book.