Portugal

Pedra da Greta

16–18 mMax Depth

boatEntry

48Species

Conditions Summary

Model forecast · local time (GMT+1)

Model conditions signal91/100

Waves

0.7 m

6.6 s

Swell

0.4 m

10.3 s

Current speed

1.4 km/h

flowing toward SE

Water temperature

19.4°C

Wind

13.6 km/h

→ NW

Sea level

-0.2 m

rising

WavesWatch

SwellCalm

Current speedCalm

Planning window

20:45–20:00

Calmest model window

Forecast Overview

Tue, Oct 20Watch

Waves0.7–0.7 mCurrent speed1.5 km/h maxWater temperature19.4°C

TodayCalm

Waves0.4–0.7 mCurrent speed1.7 km/h maxWater temperature19.0°C

TomorrowCalm

Waves0.4–0.6 mCurrent speed1.5 km/h maxWater temperature18.7°C

Fri, Oct 23Calm

Waves0.4–0.6 mCurrent speed1.4 km/h maxWater temperature18.4°C

Next 72 hours

20:00

Waves: 0.7 m

Current speed: 1.5 km/h

Water temperature: 19.5°C

02:00

Waves: 0.7 m

Current speed: 1.0 km/h

Water temperature: 19.1°C

08:00

Waves: 0.5 m

Current speed: 0.6 km/h

Water temperature: 18.9°C

14:00

Waves: 0.5 m

Current speed: 1.5 km/h

Water temperature: 19.0°C

20:00

Waves: 0.6 m

Current speed: 1.5 km/h

Water temperature: 19.0°C

02:00

Waves: 0.5 m

Current speed: 0.6 km/h

Water temperature: 18.7°C

08:00

Waves: 0.4 m

Current speed: 0.9 km/h

Water temperature: 18.7°C

14:00

Waves: 0.4 m

Current speed: 1.3 km/h

Water temperature: 18.9°C

20:00

Waves: 0.5 m

Current speed: 1.2 km/h

Water temperature: 18.7°C

02:00

Waves: 0.5 m

Current speed: 0.4 km/h

Water temperature: 18.4°C

08:00

Waves: 0.4 m

Current speed: 0.9 km/h

Water temperature: 18.3°C

14:00

Waves: 0.4 m

Current speed: 1.3 km/h

Water temperature: 18.4°C

Catalog depth16–18 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

Aug 21.5°

Jan16.5°

Feb15.9°

Mar15.9°

Apr16.6°

May18.0°

Jun19.8°

Jul21.0°

Aug21.5°

Sep21.4°

Oct20.5°

Nov18.9°

Dec17.4°

Current: mild

Typical visibility: 7.5 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

Purple dye murex

Bolinus brandaris

DeepLog9

Saddle shell

Anomia ephippium

DeepLog9

Banded murex

Hexaplex trunculus

DeepLog7

King scallop

Pecten maximus

DeepLog5

Olla volute

Cymbium olla

DeepLog5

Mud-dwelling mactra

Lutraria lutraria

DeepLog4

Common pelican-foot

Aporrhais pespelecani

DeepLog3

Flexuous scallop

Flexopecten flexuosus

DeepLog3

Portuguese man o'war

Physalia physalis

DeepLog3

Sepia

Sepia officinalis

DeepLog3

Variegated scallop

Mimachlamys varia

DeepLog3

Chinese cup-and-saucer

Calyptraea chinensis

DeepLog2

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

DeepLog + OBIS →

Photos