Sombrero Reef

Florida, United Statesreef9 m maxbeginner

Conditions & tides

Sombrero ReefFlorida

Good · 5/5

conditions visualisation

Good5/5

Calm and diveable right now — best window today 7 AM–5 PM.

Wind6 kn NE

Current~0.8 kn NE · model

Swell

0.2 m · 3s · E

Water

28 °C

Max depth

9 m

Conditions through the day

6 AM6 PM

Calmest current near slack — 04:15 & 15:15 local

Sunrise 06:35 · Sunset 17:41 local

Show details

Tide · local

Outlook — select a day for full conditions

On-face swell 0.2 m — the component of the swell aimed at this site’s exposed face. Current is a regional model value (Copernicus, ~9 km grid) — a guide to the area, not a precise reef measurement. Imagery © Esri · not depth or visibility.

Scored by DiveConnect's site-physics model

Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.

Dived here today? How were conditions vs. what we showed?

About this site

Sombrero Reef lies a few miles off Marathon in the Florida Keys, a protected Sanctuary Preservation Area where fishing, spearfishing and anchoring are prohibited. It is billed as the third-largest barrier reef in the world, with a lighthouse marking the area, and it is reached by boat.

The reef has a spur-and-groove layout, with fingers of dense shallow coral separated by sandy channels. Depths range from 2 to 30 feet (0.6 to 9 m), with the spurs in 5 to 10 feet (1.5 to 3 m) and the channels about 25 feet (7.5 m) deep.

Fish are abundant and unafraid, and parrotfish, angelfish, grouper and snapper are easy to find.

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