Oceania › Australia

Portsea Hole

15–40 mMax Depth

boatEntry

48Species

Conditions Summary

Model forecast · local time (GMT+11)

Model conditions signal91/100

Waves

0.5 m

9.4 s

Swell

0.4 m

11.0 s

Current speed

0.9 km/h

flowing toward NE

Water temperature

15.8°C

Wind

7.9 km/h

→ N

Sea level

-0.3 m

rising

WavesWatch

SwellCalm

Current speedCalm

Planning window

01:45–01:00

Calmest model window

Forecast Overview

Mon, Oct 19Watch

Waves0.5–0.8 mCurrent speed2.5 km/h maxWater temperature15.8°C

Tue, Oct 20Watch

Waves0.7–0.9 mCurrent speed2.3 km/h maxWater temperature15.8°C

TodayWatch

Waves0.7–1.0 mCurrent speed2.2 km/h maxWater temperature16.6°C

TomorrowChallenging

Waves1.1–1.1 mCurrent speed1.9 km/h maxWater temperature16.8°C

Next 72 hours

01:00

Waves: 0.5 m

Current speed: 0.2 km/h

Water temperature: 15.8°C

07:00

Waves: 0.6 m

Current speed: 0.6 km/h

Water temperature: 15.6°C

13:00

Waves: 0.7 m

Current speed: 0.5 km/h

Water temperature: 15.8°C

19:00

Waves: 0.8 m

Current speed: 0.5 km/h

Water temperature: 16.0°C

01:00

Waves: 0.8 m

Current speed: 0.4 km/h

Water temperature: 15.8°C

07:00

Waves: 0.9 m

Current speed: 0.7 km/h

Water temperature: 15.7°C

13:00

Waves: 0.8 m

Current speed: 0.7 km/h

Water temperature: 15.8°C

19:00

Waves: 0.8 m

Current speed: 0.3 km/h

Water temperature: 16.0°C

01:00

Waves: 0.7 m

Current speed: 0.4 km/h

Water temperature: 15.9°C

07:00

Waves: 0.7 m

Current speed: 0.6 km/h

Water temperature: 15.9°C

13:00

Waves: 0.8 m

Current speed: 1.1 km/h

Water temperature: 16.7°C

19:00

Waves: 0.9 m

Current speed: 0.2 km/h

Water temperature: 17.6°C

Catalog depth15–40 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

Nov-Apr

Peak month

Feb 19.3°

Jan18.5°

Feb19.3°

Mar18.8°

Apr17.2°

May15.7°

Jun14.2°

Jul13.0°

Aug12.6°

Sep12.9°

Oct14.0°

Nov15.4°

Dec17.0°

Current: moderate

Typical visibility: 20 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

deepsalt 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

Common seadragon

Phyllopteryx taeniolatus

DeepLog38

Slender-spined porcupine fish

Diodon nicthemerus

DeepLog9

Magpie perch

Pseudogoniistius nigripes

DeepLog8

Rotfish

Notolabrus tetricus

DeepLog8

Tosia australis

DeepLog8

Blue-spotted goatfish

Upeneichthys vlamingii

DeepLog5

Patrician wrasse

Pictilabrus laticlavius

DeepLog5

Pot-bellied seahorse

Hippocampus abdominalis

DeepLog5

Striped cowfish

Aracana aurita

DeepLog5

Cyanea annaskala

DeepLog4

Short-tail stingray

Bathytoshia brevicaudata

DeepLog4

Slender parrotfish

Eupetrichthys angustipes

DeepLog4

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

DeepLog + OBIS →

Photos