Blue Hole, Dahab

Verified2026-09-11 checkedWallCavern

A 100 m sinkhole beside the shore — an easy recreational dive with a lethal reputation earned elsewhere in it.

Depth: 5–30 m16–98 ft
Difficulty: Intermediate
Entry: Shore
Typical current: Light
Coordinates: 28°34.332′N 34°32.232′E
Activities: Scuba · Freediving · Technical

The Blue Hole is a shore-entry sinkhole about 100 m deep, separated from the open sea by a shallow saddle. Dived as intended — over the saddle at 6 m and along the outer wall — it is a straightforward and beautiful recreational dive with excellent coral. Its reputation comes from the Arch, a tunnel at 55 m that has killed a large number of divers attempting it on recreational gear and training. Those two dives share a name and nothing else. It is also one of the world's main freediving training sites.

By road north from Dahab, about 15 minutes; entry directly from the shore.

Best season

ExcellentApr–Jun
ExcellentSep–Oct
GoodJul–Aug
GoodNov–Dec
GoodMar
FairJan–Feb

Before you get in

A cavern — inside the daylight zone, but still with a ceiling, and with stretches where you cannot simply go up.
A wall. There is no bottom in sight to judge against, so depth is kept by the gauge alone — and it is easy to end up deeper than intended.

Taken from this site’s recorded depth, type and current, and nothing else. An empty list is not a safe site — the sea on the day, the local geography and the boat traffic are not in it. The briefing on the spot comes first.

Conditions

Water temperature: 26.4°C80°F
Wave height: 0.6 m2 ft
Air temperature: 31.9°C89°F
Wind speed: 15.5 km/h9.6 mph

Updated 2026-10-07 16:15 UTC · Source: Open-Meteo

Weather data by Open-Meteo.com (CC BY 4.0)

Conditions are reported for information only. Assess the site yourself and follow your guide and your training.

No live conditions for this site yet.

We only show numbers we can attribute to a source.

Sea state and tide

On a date

Tide · 10/7

High04:000.25 m
Low10:12-0.26 m
Low22:50-0.28 m

Forecast heights against mean sea level. Real tides in a bay, a harbour or over a flat can differ — check an official tide table before you get in.

Pick a day to see its tide

Only wave height and wind are scored, because those are what close a boat ramp or a shore entry. Water temperature is reported and never scored: 12°C is an ordinary dive in a drysuit and punishing in a 3 mm, and a number that cannot see your suit has no business marking it down. Stars do not decide whether you get in — you and your guide do, on the day.

Weather data by Open-Meteo.com (CC BY 4.0)

Marine life you may see

Red lionfishPterois volitansCommon
Scalefin anthiasPseudanthias squamipinnisCommon
Bluespotted ribbontail rayTaeniura lymmaRare
NudibranchNudibranchiaCommon
Giant morayGymnothorax javanicusCommon
Clark’s anemonefishAmphiprion clarkiiCommon
Yellow boxfishOstracion cubicusCommon
TrumpetfishAulostomus chinensisCommon
Emperor angelfishPomacanthus imperatorCommon
Fire coralMillepora spp.Common
Spanish dancerHexabranchus sanguineusRare
Long-spined sea urchinDiadema setosumCommon

From divers

What people who were in the water reported. Not a forecast, and not a judgement about whether the site is safe to dive.

No recent reports from divers. If you dived here in the last two weeks, you can say how it was.

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