What is the best time to dive Key Largo?

The best months to dive Key Largo in United States are April, May, June, July, August, September, October. Water temperatures range from 22°C to 29°C during peak season.

How deep is Key Largo?

Key Largo reaches a maximum depth of 30 m, with visibility ranging from 6–24 m. Depths beyond 18 m are best suited to Advanced Open Water divers or higher.

What marine life can you see at Key Largo?

Key Largo is known for encounters with nurse shark, moray eel, lobster, barracuda, sea turtle, angelfish. The site features reef diving across 40 named sites, with a marine life score of 53/100 in OkToDive's ranking.

Is Key Largo good for beginners?

Key Largo suits divers with a Open Water certification. Currents are moderate and maximum depth is 30 m — comfortable for intermediate divers who have a few trips under their belt.

How much does it cost to dive Key Largo?

A 2-tank dive at Key Largo averages around $95 USD, placing it in the mid range tier. Both boat and shore access are available, giving divers flexibility on budget.

Key Largo Diving — Florida's Dive Capital

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World Class

Intermediate

Key Largo

United StatesNorth America

60.2

SCORE

25.0863°N

-80.4472°E

John Pennekamp Coral Reef State Park was the first underwater park in the US. The Christ of the Abyss statue at Key Largo Dry Rocks is iconic, while the Spiegel Grove — a 510ft Navy ship sunk as an artificial reef — is the premier wreck dive on the East Coast.

America's First Underwater Park

Visibility6–24 m

Temperature22–29°C

Max Depth30 m

Currentmoderate

2-Tank Dive$95

Best MonthsApril, May, June, July

CertificationOpen WaterIntermediate

Score breakdown

Click any score to see a detailed breakdown

Marine Life

53.0

Species diversity, megafauna encounters, reef fish abundance, macro life, and endemic species.

Species Diversity

Megafauna Encounters

Reef Fish Abundance

Macro Life

Endemic Species

Marine life diversity

53.0

Coral & reef health

72.0

Visibility & conditions

61.0

Dive site variety

36.0

Water temperature

66.0

Depth & access

56.0

Operator quality

73.0

Topside experience

64.0

Getting there

68.0

Value & cost

55.0

Crowding

59.0

Social proof

57.0

Key species

nurse shark moray eel lobster barracuda sea turtle angelfish

Dive types

reef

Traveling with non-divers?

Your non-diving travel companions will find plenty to enjoy topside while you're underwater. Here are some activities to consider.

Activities for non-divers

John Pennekamp glass-bottom boatsnorkeling Christ of the Deepkayaking through mangrovesKey Lime pie tastingsunset at dock bars

Nearby cultural sites

John Pennekamp Coral Reef State Park
Florida Keys History Center

Non-diver score

7/10

Good topside options for non-diving companions.

Family FriendlyYes

Restaurants & Nightlifemoderate

Safety & emergency

Dive insurance

DAN recommends dive insurance for all divers.

Learn more at DAN.org

Hyperbaric Chamber30 km — Mariner's Hospital Hyperbaric Unit, Tavernier

Nearest Hospital10 km

Chamber nearby in Tavernier; hospitals in Upper Keys; trauma center in Miami (1.5 hrs)

Skill LevelIntermediate

Current Strengthmoderate

Top operators

Rainbow Reef Dive Center

PADI

4.7

420 reviewsNITROX

Horizon Divers

PADI

4.8

310 reviewsNITROX

Compare this dive site

Key Largo in United States scores 60.2/100in OkToDive's 12-category data-driven rating. Best for reef diving with 6–24m visibility and 22–29°C water temps. A 2-tank dive costs ~$95 USD. Peak season: April, May, June.

Last updated: 2026-05-24

Who should dive here

Best for

+ Divers who prioritize reef diving
+ Anyone visiting North America for the first time
+ Groups seeking 40+ named dive sites in one area

Skip if

− You prefer uncrowded sites and this has 40+ named spots drawing traffic
− You need shore access — this is boat-only

Verdict

Choose Key Largo over similar North America destinations when operator quality matters more than site variety

How Key Largo compares

Site	Score	Visibility	Cost/dive	Best for
Key Largo	60.2	6–24m	$95	reef
Playa del Carmen	78.3	15–50m	$100	cenote, reef
Puerto Rico	72.8	12–30m	$105	wall, reef
US Virgin Islands	72.3	15–35m	$110	reef, wall
Palm Beach (Drift Diving)	72.0	15–30m	$110	drift, reef

Current conditions

8/10Excellent

Waves1.04 m

Swell0.16 m

Wind31.4 km/h

Air23.3°C

Mainly clearModerate wind (31.4 km/h)

43d ago

Honest reality check

What your dive shop won't tell you

The minimum certification printed on a brochure is the legal floor, not the honest recommendation. Here's what we actually think you should bring to this site.

Recommended logged dives

25+

Below this we'd send you somewhere easier first.

Recommended certification

Open Water

“Dive capital of the continental US. Christ statue, Spiegel Grove, Pennekamp reef — all within 30 minutes.”

What will challenge you

→Moderate currents. Expect to drift — this is not a skill-builder site for a first trip after certification.
→Boat traffic. Busy year-round. Popular sites have multiple boats at all times.

What will surprise you

→Thermoclines can drop water temp by 7°C between the surface and depth. Your wetsuit choice should match the minimum, not the average.

Time of day

When to dive it

Every dive shop gives you this briefing at 7am. We just wrote it down.

Morning

Viz
high
Current
mild
Crowd
moderate

Christ of the Abyss
John Pennekamp reef
wide angle

Most photographed underwater statue — 8m tall in 8m of water. Morning when light hits the statue's face. Best reef in the Florida Keys.

Afternoon

Viz
high
Current
mild
Crowd
busy

Spiegel Grove wreck
Molasses Reef
reef dives

Spiegel Grove is a 155m Navy ship at 40m. Afternoon when morning crowd clears.

Month-by-month

Dive forecast

Realistic conditions by month. Viz ranges are what you should actually expect, not best-case marketing numbers. Confidence % is the share of days that match this profile historically.

Month	Viz (m)	Temp (°C)	Current	Sea	Rain	Confidence	Highlights
Jan	8–13	22	Mod	Mod	Wet	55%	conditions vary
Feb	8–13	22	Mod	Mod	Wet	65%	conditions vary
Mar	9–15	22	Mod	Chop	Light	78%	conditions vary
Apr	9–17	24	Mod	Calm	Dry	88%	conditions vary
May	10–19	26	Mod	Calm	Dry	88%	conditions vary
Jun	10–20	27	Mod	Calm	Dry	88%	conditions vary
Jul	11–24	29	Mod	Calm	Dry	88%	conditions vary
Aug	11–24	29	Mod	Calm	Dry	88%	conditions vary
Sep	11–22	29	Mod	Calm	Dry	88%	conditions vary
Oct	10–19	27	Mod	Calm	Dry	88%	conditions vary
Nov	9–15	26	Mod	Chop	Light	78%	conditions vary
Dec	8–13	24	Mod	Mod	Wet	65%	conditions vary

Shoot here

Photography brief

Subjects are only half the shot. A perfect macro site is useless in a three-knot drift, and a wide-angle dream is useless at 35 m with a murky ceiling. These are the conditions, not the hype.

Macro subjects33

Wide angle39

Viz stability58

Hover friendliness70

Natural light52

Recommended kit

→General reef kit — mid-range wide or a 60mm macro depending on the specific site

Level up here

What this site will teach you

The dives that made you a better diver are the ones that made you uncomfortable for the right reasons. Here's what this site will quietly train you for.

US reef diving fundamentals
foundational
Where most American divers get their reef foundation.
Purpose-sunk wreck diving
intermediate
Spiegel Grove is a perfect intro to large wreck diving.

What it costsEstimates — calibration pending

7-day trip, per person

Rough ranges anchored to existing regional data — not booking quotes. Land-based trip, standard breakdown.

Budget

$1,350–$2,200

Hostels, shore diving, cheap eats

Flights (RT from US): $180–$220
Accommodation / day: $50–$100
Diving / day: $80–$100
Food / day: $30–$60
Transfers + misc: $50–$150

Mid-range

$2,450–$3,800

3-star hotels, standard boat ops, mix of restaurants

Flights (RT from US): $360–$440
Accommodation / day: $120–$220
Diving / day: $100–$120
Food / day: $70–$120
Transfers + misc: $50–$150

Splurge

$4,400–$7,650

Top resorts or liveaboards, premium operators

Flights (RT from US): $630–$770
Accommodation / day: $260–$500
Diving / day: $120–$160
Food / day: $150–$300
Transfers + misc: $50–$150

Budget decision guide

Choose Budget if you prioritize dive count over comfort — hostels and shore diving maximize bottom time per dollar. Choose Mid-range for the best balance of comfort and value — most divers land here. Choose Splurge for premium operators, private guides, and top-tier accommodation — worth it for special trips or non-diving partners.

Flights priced round-trip from a major US hub. Figures are per person on a shared room. Solo travelers add ~30% to accommodation.

Pair with

Build a trip around it

Most divers fly across the world for one destination and don't realise another worth-it site is 90 minutes away. Here are the honest pairings.

Best dive types here

Key Largo Diving — United States