Costa Rica

Chatan Bay

15–40 mMax Depth

liveaboardEntry

80Species

Conditions Summary

Model forecast · local time (GMT-6)

Model conditions signal61/100

Waves

1.7 m

11.4 s

Swell

1.1 m

12.1 s

Current speed

1.6 km/h

flowing toward E

Water temperature

29.4°C

Wind

9.3 km/h

→ S

Sea level

0.1 m

falling

WavesChallenging

SwellWatch

Current speedWatch

Forecast Overview

Mon, Oct 19Challenging

Waves1.7–1.8 mCurrent speed1.9 km/h maxWater temperature29.4°C

Tue, Oct 20Challenging

Waves1.5–1.7 mCurrent speed2.6 km/h maxWater temperature29.4°C

TodayChallenging

Waves1.4–1.5 mCurrent speed2.9 km/h maxWater temperature29.4°C

TomorrowChallenging

Waves1.4–1.4 mCurrent speed2.4 km/h maxWater temperature29.4°C

Next 72 hours

01:00

Waves: 1.7 m

Current speed: 1.6 km/h

Water temperature: 29.4°C

07:00

Waves: 1.7 m

Current speed: 1.4 km/h

Water temperature: 29.3°C

13:00

Waves: 1.7 m

Current speed: 1.7 km/h

Water temperature: 29.5°C

19:00

Waves: 1.8 m

Current speed: 1.8 km/h

Water temperature: 29.4°C

01:00

Waves: 1.7 m

Current speed: 1.8 km/h

Water temperature: 29.3°C

07:00

Waves: 1.7 m

Current speed: 2.2 km/h

Water temperature: 29.3°C

13:00

Waves: 1.6 m

Current speed: 2.4 km/h

Water temperature: 29.6°C

19:00

Waves: 1.6 m

Current speed: 2.4 km/h

Water temperature: 29.4°C

01:00

Waves: 1.5 m

Current speed: 2.2 km/h

Water temperature: 29.3°C

07:00

Waves: 1.4 m

Current speed: 2.5 km/h

Water temperature: 29.3°C

13:00

Waves: 1.4 m

Current speed: 2.3 km/h

Water temperature: 29.6°C

19:00

Waves: 1.4 m

Current speed: 2.9 km/h

Water temperature: 29.5°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

Jun-Nov

Peak month

Mar 29.3°

Jan28.0°

Feb28.9°

Mar29.3°

Apr29.1°

May28.6°

Jun28.0°

Jul27.7°

Aug27.4°

Sep27.2°

Oct26.9°

Nov26.7°

Dec27.1°

Current: strong

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

deepdriftreefsalt Wateradvanced 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

Guineafowl puffer

Arothron meleagris

DeepLog7

Whitetip reef shark

Triaenodon obesus

DeepLog7

Island major

Stegastes arcifrons

DeepLog6

Ringtailed surgeonfish

Acanthurus xanthopterus

DeepLog6

Spotted sharpnose puffer

Canthigaster punctatissima

DeepLog5

Blotcheye soldierfish

Myripristis berndti

DeepLog4

Cortez rainbow wrasse

Thalassoma lucasanum

DeepLog4

Goldrim surgeonfish

Acanthurus nigricans

DeepLog4

King angelfish

Holacanthus passer

DeepLog4

Leather bass

Dermatolepis dermatolepis

DeepLog4

Lythrypnus cobalus

DeepLog4

Mexican hogfish

Bodianus diplotaenia

DeepLog4

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

DeepLog + OBIS →

Photos