Head to head editorial

St. Lucia: east coast vs west coast sargassum

Book west for calmer water: Rodney Bay and the leeward shore face away from the open Atlantic, while the east coast catches it head on.

The reasoning

Why the map says what it says

St. Lucia is one island with two different seaweed stories, and most visitors already stay on the sheltered side without knowing that is why the water looks the way it does. The east coast card below tracks the exposed Atlantic shore, which is wilder in every sense. If a property lists an east-coast address, check that card, not the west one, and ask the hotel which shore its beach actually sits on.

Editorial judgment based on coast orientation; the cards below are the data. Seaweed lands mostly on coasts facing the open Atlantic (NOAA CoastWatch FAQ). Reviewed 2026-09-01.

Right now

Current risk level, side by side satellite-derived

Both measured from NOAA's update of . Each card rates one specific stretch of coast; open a destination for the full picture.

The record

September, five years back satellite-derived

Raw satellite floating-algae detections near each coast for this month in each of the past five years (brighter orange and red = stronger signal). These are detections, not risk ratings: clouds and glare can hide algae, offshore mats do not always land, and the nearshore strip is blanked where the signal is unreliable. Click any map for that month's full Caribbean view.

Making the call

How to decide

  1. Read the cards above, including the full mix of levels, not just the headline.
  2. Open a beach cam for each contender if one exists; nothing beats looking.
  3. Ask each hotel for a same-day photo of its swimming beach.
  4. Remember the atlas rates coastlines, not resorts: one cove can beat its neighbor on the same morning.

More head-to-heads on the compare page, or build a shortlist from scratch with where beaches stay clearer.