Asia › Japan

Ukon Denchi

12–35 mMax Depth

boatEntry

1Species

Conditions Summary

Model forecast · local time (GMT+9)

Model conditions signal91/100

Waves

0.9 m

5.5 s

Swell

0.5 m

6.1 s

Current speed

0.9 km/h

flowing toward W

Water temperature

28.6°C

Wind

18.2 km/h

→ E

Sea level

1.6 m

rising

WavesWatch

SwellCalm

Current speedCalm

Forecast Overview

Sat, Oct 17Watch

Waves0.9–1.0 mCurrent speed1.1 km/h maxWater temperature28.6°C

Sun, Oct 18Challenging

Waves1.0–1.3 mCurrent speed1.3 km/h maxWater temperature28.6°C

Mon, Oct 19Watch

Waves1.0–1.2 mCurrent speed0.8 km/h maxWater temperature28.6°C

Tue, Oct 20Challenging

Waves1.1–1.7 mCurrent speed0.9 km/h maxWater temperature28.6°C

Next 72 hours

20:00

Waves: 0.9 m

Current speed: 0.9 km/h

Water temperature: 28.6°C

02:00

Waves: 1.1 m

Current speed: 0.9 km/h

Water temperature: 28.5°C

08:00

Waves: 1.2 m

Current speed: 1.0 km/h

Water temperature: 28.5°C

14:00

Waves: 1.2 m

Current speed: 1.2 km/h

Water temperature: 28.7°C

20:00

Waves: 1.2 m

Current speed: 0.6 km/h

Water temperature: 28.6°C

02:00

Waves: 1.1 m

Current speed: 0.4 km/h

Water temperature: 28.5°C

08:00

Waves: 1.0 m

Current speed: 0.2 km/h

Water temperature: 28.5°C

14:00

Waves: 1.0 m

Current speed: 0.8 km/h

Water temperature: 28.8°C

20:00

Waves: 1.1 m

Current speed: 0.4 km/h

Water temperature: 28.7°C

02:00

Waves: 1.2 m

Current speed: 0.9 km/h

Water temperature: 28.6°C

08:00

Waves: 1.2 m

Current speed: 0.2 km/h

Water temperature: 28.5°C

14:00

Waves: 1.4 m

Current speed: 0.8 km/h

Water temperature: 28.8°C

Catalog depth12–35 m

Data sources & field guideOpen-Meteo Marine + Weather APIs

Planning context, not a safety guarantee. Coastal model accuracy is limited. Confirm the actual briefing, entry, exit, and suitability with a local operator.

Open-Meteo Marine + Weather APIs →

Dive readiness

Collecting the latest marine conditions and forecast signals.

Seasons · water temperature

12-month outlook

Best window

Apr-Oct

Peak month

Jul 29.1°

Jan23.4°

Feb23.0°

Mar23.4°

Apr24.5°

May26.3°

Jun28.0°

Jul29.1°

Aug29.1°

Sep28.4°

Oct27.3°

Nov26.0°

Dec24.5°

Current: moderate

Typical visibility: 10 m

Historical planning data from the recorded site profile. Water temperature and conditions can vary by day, depth, and weather; confirm current conditions with a local operator.

Explore nearby centers on the map

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Dive Types

reefdriftsalt Waterintermediate Difficulty

Questions to ask a local operator

What are today's current, visibility, entry, and exit conditions?
Does the planned route stay within my certification and recent experience?
Are there local permits, conservation rules, or equipment requirements?

Common Species

12 km · nearby observations

Squaretail mullet

Ellochelon vaigiensis

DeepLog1

トゲサンゴ

Seriatopora hystrix

Nearby OBIS observations7

Pavona varians

Nearby OBIS observations6

Acropora nasuta

Nearby OBIS observations5

Hydnophora exesa

Nearby OBIS observations5

アザミサンゴ

Galaxea fascicularis

Nearby OBIS observations5

ハナヤサイサンゴ

Pocillopora acuta

Nearby OBIS observations5

Acropora

Nearby OBIS observations4

Acropora microphthalma

Nearby OBIS observations4

ヒメマツミドリイシ

Acropora aspera

Nearby OBIS observations4

Acropora humilis

Nearby OBIS observations3

Acropora intermedia

Nearby OBIS observations3

These are nearby biodiversity records, not a guarantee that every species will be seen on a particular dive.

DeepLog + OBIS →