Saint Lucia in August

August is Saint Lucia's 9th-best month (rank 9 of 12): its 2 destinations average 83/100, led by Castries at 84 — 35°C and 22 rainy days — while Soufrière trails at 82 with 113 mm of rain.

#9 of 12 months for Saint Lucia · 2 destinations · updated September 2026 · climate normals from ERA5 reanalysis

🇱🇨 Saint Lucia, month by month

83/100 in August
  1. 90Jan
  2. 91Feb
  3. 92Mar
  4. 91Apr
  5. 90May
  6. 86Jun
  7. 84Jul
  8. 83Aug
  9. 82Sep
  10. 82Oct
  11. 83Nov
  12. 89Dec

Where in Saint Lucia in August

#PlaceTypeFeels-like highRainComfortAt its best
1CastriesIsland35°C103 mm · 22 days84 tier A—
2SoufrièreBeach35°C113 mm · 22 days82 tier A—

Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means August is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.

What's on in Saint Lucia in August

  • La Rose Flower Festival · Castries and 1 more place · 30 Aug

Better months for Saint Lucia

March · 92/100February · 91/100April · 91/100Weakest: October · 82/100
← Saint Lucia in JulySaint Lucia in September →Best time to visit Saint Lucia, month by monthCompare: Castries vs Soufrière in August