January · Saint Lucia
Best time to visit Castries in January Weather, crowds & prices
Weather in Castries in January
Average temperature 27°C, 25 mm of rain, about 21 days with 6+ hours of sunshine and 75% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
January score
9.6/10
Ranked #5 of 12 months
- Avg temp
- 27°C
- Rainfall
- 25 mm
- Humidity
- 75%
- Days with 6h+ sun
- 21
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
January in Castries scores 9.6/10 for beach and coastal travel - an above-average month (#5 of 12). Expect around 27°C, 25 mm of rain, and roughly 21 days with 6+ hours of sunshine this month.
Castries is Saint Lucia's capital, a harbour town beneath green hills on the island's northwest coast.
January in Castries — one of the year's strongest windows (5th)
Days in January average 27°C (80°F) and humidity near 75% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
With around 25 mm of rain, any showers tend to pass through rather than settle in; about 21 days with 6+ hours of sunshine and 11.3 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Castries at 9.6/10 (5th of 12), just behind March at 9.8/10.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Expect peak pricing, and this is one of the busiest months here.
Frequently asked
- What is the weather like in Castries in January?
- In January, Castries averages 27°C, 25 mm of rain, and about 21 days with 6+ hours of sunshine. Its climate-comfort score is 9.6/10.
- Is January a good time to visit Castries?
- January earns a 9.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Castries in January?
- Expect about 25 mm of rain in January. Average humidity is 75% and there are about 21 days with 6+ hours of sunshine.
Curated in Castries
Tickets & experiences
Things to do in Castries
Castries, Saint Lucia. Live activities and tours from GetYourGuide, matched to this destination.