Temperature
Hot by day, warm at night.
85°Ftypical Aug high
Castries is most comfortable in the drier months around January to March. Typical daytime highs run about 82-86°F year-round. The climate is warm and humid. Rainy season runs roughly June to November.

Hot by day, warm at night.
Rain most days.
Plenty of sun this month.
Warm days, with some hot afternoons and occasional humid spells.
Partly cloudy across the month.
Want a side-by-side climate view? Compare Castries with St. John.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology