SeasonMapSaint Lucia in December
December is Saint Lucia's 6th-best month (rank 6 of 12): its 2 destinations average 89/100, led by Castries at 90 — 31°C and 14 rainy days — while Soufrière trails at 88 with 45 mm of rain.
#6 of 12 months for Saint Lucia · 2 destinations · updated September 2026 · climate normals from ERA5 reanalysis
Where in Saint Lucia in December
| # | Place | Type | Feels-like high | Rain | Comfort | At its best |
|---|---|---|---|---|---|---|
| 1 | Castries | Island | 31°C | 42 mm · 14 days | 90 tier S | — |
| 2 | Soufrière | Beach | 32°C | 45 mm · 15 days | 88 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 December 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 December
- ARC finish at Rodney Bay · Castries · 25 Nov – 22 Dec