United States
Half Moon Underwater Archaeological Preserve
3–12 mMax Depth
boatEntry
42Species
Conditions Summary
Model forecast · local time (GMT-4)
Model conditions signal91/100
Waves
1.0 m
7.1 s
Swell
0.7 m
7.3 s
Current speed
0.6 km/h
flowing toward SW
Water temperature
28.6°C
Wind
13.4 km/h
→ N
Sea level
-0.1 m
rising
WavesWatch
SwellCalm
Current speedCalm
Planning window
12:00–13:00
Calmest model window
Forecast Overview
TodayWatch
Waves0.8–1.0 mCurrent speed0.8 km/h maxWater temperature28.5°C
TomorrowWatch
Waves0.7–1.0 mCurrent speed0.9 km/h maxWater temperature28.4°C
Fri, Oct 23Watch
Waves0.9–1.1 mCurrent speed0.9 km/h maxWater temperature28.3°C
Next 72 hours
Catalog depth3–12 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
Aug 29.7°
Jan24.7°
Feb24.6°
Mar24.9°
Apr25.8°
May27.0°
Jun28.4°
Jul29.2°
Aug29.7°
Sep29.3°
Oct28.3°
Nov26.9°
Dec25.7°
Current: mild
Typical visibility: 15 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
Chione elevata
DeepLog16
Buttonwood
Conocarpus erectus
DeepLog6
Broad ribbed cardita
Carditamera floridana
DeepLog5
Portuguese man o'war
Physalia physalis
DeepLog4
American starsnail
Lithopoma americanum
DeepLog3
Queen conch shell
Aliger gigas
DeepLog3
Red mangrove
Rhizophora mangle
DeepLog3
Sailfin mollie
Poecilia latipinna
DeepLog3
Sheepshead minnow
Cyprinodon variegatus
DeepLog3
Longspine starsnail
Lithopoma phoebium
DeepLog2
Plicate nerite
Nerita versicolor
DeepLog2
Ragged sea hare
Aplysia dactylomela
DeepLog2
These are nearby biodiversity records, not a guarantee that every species will be seen on a particular dive.
DeepLog + OBIS →Photos
