April · Saint Lucia
Best time to visit Castries in April Weather, crowds & prices
Weather in Castries in April
Average temperature 28°C, 22 mm of rain, about 30 days with 6+ hours of sunshine and 75% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
April score
9.8/10
Ranked #2 of 12 months
- Avg temp
- 28°C
- Rainfall
- 22 mm
- Humidity
- 75%
- Days with 6h+ sun
- 30
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
April in Castries scores 9.8/10 for beach and coastal travel - one of the top 12-month picks (#2). Expect around 28°C, 22 mm of rain, and roughly 30 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.
April is one of the strongest months in Castries (2nd)
Days in April average 28°C (82°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 22 mm of rain, any showers tend to pass through rather than settle in; about 30 days with 6+ hours of sunshine and 12.3 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Castries at 9.8/10 (2nd of 12), just behind March at 9.8/10.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Castries in April?
- In April, Castries averages 28°C, 22 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 9.8/10.
- Is April a good time to visit Castries?
- April earns a 9.8/10 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 April?
- Expect about 22 mm of rain in April. Average humidity is 75% and there are about 30 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.