New Zealand

Eastern Reef , Gt Mercury

5–20 mMax Depth

boatEntry

29Species

Conditions Summary

Model forecast · local time (GMT+13)

Model conditions signal100/100

Waves

0.4 m

7.1 s

Swell

0.3 m

4.3 s

Current speed

0.2 km/h

flowing toward W

Water temperature

16.3°C

Wind

10.2 km/h

→ SW

Sea level

0.1 m

rising

WavesCalm

SwellCalm

Current speedCalm

Planning window

22:30–22:00

Calmest model window

Forecast Overview

Mon, Oct 19Calm

Waves0.4–0.4 mCurrent speed0.2 km/h maxWater temperature16.3°C

Tue, Oct 20Calm

Waves0.3–0.4 mCurrent speed1.3 km/h maxWater temperature16.3°C

TodayCalm

Waves0.3–0.3 mCurrent speed0.9 km/h maxWater temperature16.4°C

TomorrowCalm

Waves0.3–0.4 mCurrent speed0.9 km/h maxWater temperature16.4°C

Next 72 hours

22:00

Waves: 0.4 m

Current speed: 0.0 km/h

Water temperature: 16.3°C

04:00

Waves: 0.4 m

Current speed: 0.2 km/h

Water temperature: 16.1°C

10:00

Waves: 0.4 m

Current speed: 0.4 km/h

Water temperature: 16.2°C

16:00

Waves: 0.4 m

Current speed: 1.0 km/h

Water temperature: 16.6°C

22:00

Waves: 0.3 m

Current speed: 0.6 km/h

Water temperature: 16.5°C

04:00

Waves: 0.3 m

Current speed: 0.4 km/h

Water temperature: 16.2°C

10:00

Waves: 0.3 m

Current speed: 0.4 km/h

Water temperature: 16.4°C

16:00

Waves: 0.3 m

Current speed: 0.5 km/h

Water temperature: 16.7°C

22:00

Waves: 0.3 m

Current speed: 0.5 km/h

Water temperature: 16.5°C

04:00

Waves: 0.3 m

Current speed: 0.3 km/h

Water temperature: 16.2°C

10:00

Waves: 0.3 m

Current speed: 0.5 km/h

Water temperature: 16.3°C

16:00

Waves: 0.4 m

Current speed: 0.4 km/h

Water temperature: 16.6°C

Catalog depth5–20 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

Oct-Apr

Peak month

Feb 20.9°

Jan20.0°

Feb20.9°

Mar20.6°

Apr19.6°

May18.1°

Jun16.6°

Jul15.5°

Aug14.9°

Sep14.9°

Oct15.5°

Nov16.8°

Dec18.5°

Current: mild

Typical visibility: 18 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

reefsalt Waterbeginner 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

Eagle ray

Myliobatis tenuicaudata

DeepLog3

Pettifogger

Gymnothorax prasinus

DeepLog3

Red scorpionfish

Scorpaena papillosa

DeepLog3

Blue maomao

Scorpis violacea

DeepLog2

Butterfly perch

Caesioperca lepidoptera

DeepLog2

Demoiselle

Chromis dispila

DeepLog2

Sandager's wrasse

Coris sandeyeri

DeepLog2

Serpent eel

Ophisurus serpens

DeepLog2

Umbrella snail

Umbraculum umbraculum

DeepLog2

Amblypneustes elevatus

DeepLog1

Beautiful jason

Jason mirabilis

DeepLog1

Black angelfish

Parma alboscapularis

DeepLog1

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

DeepLog + OBIS →

Photos