When is the best time to dive Tobermory (Fathom Five)?

The best months to dive Tobermory (Fathom Five) are June, July, August, September, when conditions are most favorable.

What certification do I need to dive Tobermory (Fathom Five)?

Tobermory (Fathom Five) requires a minimum certification of Open Water. Currents are typically mild and the maximum depth reaches 35 m.

How much does it cost to dive Tobermory (Fathom Five)?

A 2-tank dive at Tobermory (Fathom Five) averages around $80 USD. The destination is in our mid range tier.

Why does Tobermory (Fathom Five) score 53.8/100 on OkToDive?

Tobermory (Fathom Five) earns a 53.8/100 Score based on 12 weighted categories including marine life, coral health, visibility, operator quality, and value. Backed by 360 operator reviews.

Tobermory (Fathom Five) Diving — Score: 53.8/100 | Conditions, Operators & Guide

Q: What will I see diving Tobermory (Fathom Five)?

Tobermory (Fathom Five) is known for lake trout, smallmouth bass, rock bass, crayfish, freshwater clam, with 5–20 m visibility and 4–18°C water temperatures.

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World Class

Beginner Friendly

Tobermory (Fathom Five)

CanadaNorth America

53.8

SCORE

45.2584°N

-81.6645°E

Fathom Five National Marine Park at Tobermory, Ontario protects 22 shipwrecks in the crystal-clear waters of Georgian Bay. The Sweepstakes and City of Grand Rapids are visible from the surface, and deeper wrecks reward advanced divers. Canada's most popular freshwater diving destination with well-managed infrastructure.

Ontario's Freshwater Wreck Park

Visibility5–20 m

Temperature4–18°C

Max Depth35 m

Currentmild

2-Tank Dive$80

Best MonthsJune, July, August, September

CertificationOpen WaterBeginner Friendly

Score Breakdown

Click any score to see a detailed breakdown

Marine Life

25.0

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

25.0

Coral & Reef Health

8.0

Visibility & Conditions

58.0

Dive Site Variety

70.0

Water Temperature

22.0

Depth & Access

65.0

Operator Quality

75.0

Topside Experience

68.0

Getting There

55.0

Value & Cost

72.0

Crowding

60.0

Social Proof

68.0

Key Species

lake troutsmallmouth bassrock basscrayfishfreshwater clam

Dive Types

wreckfreshwatershore

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

Bruce Peninsula National Parkglass-bottom boat tourGrotto hiking trailFlowerpot Island

Nearby Cultural Sites

Fathom Five visitor centre
Bruce Peninsula Grotto

Non-Diver Partner Score

8/10

Excellent for non-divers — they'll love it here.

Family FriendlyYes

Restaurants & Nightlifebasic

Safety & Emergency

Dive Insurance

Dive insurance is essential. Standard travel insurance often excludes scuba diving. We recommend DAN (Divers Alert Network) for comprehensive dive accident coverage.

Learn More at DAN.org

Hyperbaric Chamber200 km — Toronto General Hospital Hyperbaric Unit

Nearest Hospital30 km

Local hospital in Owen Sound; chamber at Toronto General (3+ hours); helicopter available

Skill LevelBeginner Friendly

Current Strengthmild

Top Operators

Divers Den

PADI

4.6

210 reviewsNITROX

G&S Watersports

SSI

4.5

150 reviewsNITROX

Compare This Dive Site

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

55+

Below this we'd send you somewhere easier first.

Recommended certification

Advanced Open Water + Drysuit specialty

“Accessible to most certified divers with basic open water skills.”

What will challenge you

→Recreational limit of 40 m is reachable here (max depth 35 m). Gas planning and NDL tracking matter.
→Cold water — 4°C at the coldest. Drysuit recommended; wetsuit divers will be genuinely cold past 30 minutes.
→Wreck penetration requires Wreck specialty training at minimum, and often decompression planning. Don't improvise inside.
→Nearest hyperbaric chamber is ~200 km away. Evacuation is slow. Dive conservative profiles and get DAN insurance before you fly.
→Variable visibility
→Deep profiles

What will surprise you

→Short dive season — only 4 months worth going (June, July, August, September). Book well ahead or miss it.
→Permit-restricted access. Book 6+ months ahead through a licensed operator.
→Tobermory (Fathom Five) has more marine life variety than most divers expect
→Local operators know spots the guidebooks miss

Time of day

When to dive it

Every dive shop gives you this briefing at 7am. We just wrote it down. Tidal dependency: slight. Optimal window: First light to 11am for best visibility..

Morning

Viz
moderate
Current
mild
Crowd
light

reef exploration
photography

Best light and calmest conditions before afternoon wind picks up.

Afternoon

Viz
moderate
Current
mild
Crowd
moderate

drift diving
second tank

Wind chop can reduce viz. Still diveable but morning is better.

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	5–13	4	Mild	Mod	Light	70%	wreck visibility good, peak season crowds
Feb	5–13	4	Mild	Mod	Light	70%	wreck visibility good, peak season crowds
Mar	5–13	4	Mild	Mod	Light	70%	wreck visibility good, peak season crowds
Apr	5–13	4	Mild	Mod	Light	70%	wreck visibility good
May	15–20	18	Mild	Calm	Dry	70%	wreck visibility good
Jun	15–20	18	Mild	Calm	Dry	70%	wreck visibility good
Jul	15–20	18	Mild	Calm	Dry	70%	wreck visibility good
Aug	15–20	18	Mild	Calm	Dry	70%	wreck visibility good
Sep	15–20	18	Mild	Calm	Dry	70%	wreck visibility good
Oct	5–13	4	Mild	Mod	Light	70%	wreck visibility good
Nov	5–13	4	Mild	Mod	Light	70%	wreck visibility good
Dec	5–13	4	Mild	Mod	Light	70%	wreck visibility good

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 subjects58

Wide angle45

Viz stability50

Hover friendliness100

Natural light41

Recommended kit

→Dedicated video light for dark wreck interiors; don't rely on strobes alone
→Cold-water housing — condensation is a real issue below 18°C, bring silica packs

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.

Deep diving comfort
advanced
Regular dives past 30m build confidence at depth.
Self-reliant navigation
foundational
Shore entries mean you plan your own dive.

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

$1,300–$2,050

Hostels, shore diving, cheap eats

Flights (RT from US): $180–$220
Accommodation / day: $50–$100
Diving / day: $70–$80
Food / day: $30–$60
Transfers + misc: $50–$150

Mid-range

$2,300–$3,650

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

Flights (RT from US): $360–$440
Accommodation / day: $120–$220
Diving / day: $80–$100
Food / day: $70–$120
Transfers + misc: $50–$150

Splurge

$4,250–$7,500

Top resorts or liveaboards, premium operators

Flights (RT from US): $630–$770
Accommodation / day: $260–$500
Diving / day: $100–$140
Food / day: $150–$300
Transfers + misc: $50–$150

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

Tobermory (Fathom Five) Diving — Canada