United States

Big Arch

12–25 mMax Depth

boatEntry

89Species

Conditions Summary

Model forecast · local time (GMT-10)

Model conditions signal81/100

Waves

1.0 m

10.2 s

Swell

0.7 m

7.5 s

Current speed

0.5 km/h

flowing toward E

Water temperature

28.3°C

Wind

0.5 km/h

→ NW

Sea level

0.5 m

rising

WavesChallenging

SwellCalm

Current speedCalm

Planning window

01:00–02:00

Calmest model window

Forecast Overview

Sun, Oct 18Watch

Waves1.0–1.0 mCurrent speed0.5 km/h maxWater temperature28.3°C

Mon, Oct 19Watch

Waves0.9–1.0 mCurrent speed0.8 km/h maxWater temperature28.3°C

Tue, Oct 20Watch

Waves0.8–0.9 mCurrent speed1.3 km/h maxWater temperature28.2°C

TodayWatch

Waves0.7–0.8 mCurrent speed1.6 km/h maxWater temperature28.2°C

Next 72 hours

19:00

Waves: 1.0 m

Current speed: 0.5 km/h

Water temperature: 28.4°C

01:00

Waves: 1.0 m

Current speed: 0.4 km/h

Water temperature: 28.1°C

07:00

Waves: 0.9 m

Current speed: 0.6 km/h

Water temperature: 28.0°C

13:00

Waves: 0.9 m

Current speed: 0.6 km/h

Water temperature: 28.7°C

19:00

Waves: 0.9 m

Current speed: 0.6 km/h

Water temperature: 28.4°C

01:00

Waves: 0.9 m

Current speed: 0.8 km/h

Water temperature: 28.2°C

07:00

Waves: 0.9 m

Current speed: 0.9 km/h

Water temperature: 28.0°C

13:00

Waves: 0.8 m

Current speed: 1.1 km/h

Water temperature: 28.5°C

19:00

Waves: 0.8 m

Current speed: 1.1 km/h

Water temperature: 28.2°C

01:00

Waves: 0.8 m

Current speed: 1.3 km/h

Water temperature: 28.0°C

07:00

Waves: 0.7 m

Current speed: 1.6 km/h

Water temperature: 27.9°C

13:00

Waves: 0.7 m

Current speed: 1.5 km/h

Water temperature: 28.6°C

Catalog depth12–25 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

Sep 27.2°

Jan25.0°

Feb24.7°

Mar24.7°

Apr25.0°

May25.6°

Jun26.1°

Jul26.6°

Aug27.1°

Sep27.2°

Oct27.1°

Nov26.4°

Dec25.6°

Current: mild

Typical visibility: 25 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

Loading…

Dive Types

reefsalt 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

Padang frill-goby

Bathygobius coalitus

DeepLog6

African coris

Coris gaimard

DeepLog5

Manybar goatfish

Parupeneus multifasciatus

DeepLog5

Bunch whale

Megaptera novaeangliae

DeepLog4

Paintspotted moray

Gymnothorax pictus

DeepLog4

Rock-boring urchin

Echinometra mathaei

DeepLog4

Rockskipper

Istiblennius zebra

DeepLog4

Striped sea urchin

Tripneustes gratilla

DeepLog4

Common bluestripe snapper

Lutjanus kasmira

DeepLog3

Common parrotfish

Scarus psittacus

DeepLog3

Ember parrotfish

Scarus rubroviolaceus

DeepLog3

Holothuroids

Actinopyga varians

DeepLog3

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

DeepLog + OBIS →

Photos