Does Amelia Island have clear blue water?

If clear turquoise water is the reason you are choosing a beach, this is not the beach. Being straight about that is more useful than a filtered photograph.

Why it looks the way it does

The shelf. The continental shelf off northeast Florida is wide and shallow, so waves work on a sandy bottom a long way out and keep fine sediment moving.

The tide. The range here is 6 to 7.4 feet — unusually large for Florida, because the Georgia Bight funnels the tide into this corner of the coast. Twice a day that volume of water moves across the shallows and through the inlets, stirring the bottom.

The marsh. Several thousand acres of tidal salt marsh sit behind the island, and the water draining out of it carries tannins — the same thing that makes a tea-coloured creek. On a big outgoing tide you can see the difference in colour where it meets the ocean.

None of that is pollution. It is what a healthy barrier-island estuary looks like, and it is the reason the fishing and the birdlife here are as good as they are.

When it is clearest

Winter. Less biological activity in the water, fewer storms stirring the bottom, and the marsh draining less. January and February are the clearest months — and also the coldest, at 57.9°F and 60.3°F.

A calm, high tide after several still days is the best you will get in summer. An onshore wind or the day after a storm is the worst.

What the beach is good for instead

Thirteen miles of hard, flat, walkable and cyclable sand at low tide; shelling and shark teeth; sandbars exposed at low water; and a genuinely warm ocean from May to October. Our beaches guide compares every access on parking, restrooms and crowds.