June · Saint Lucia
Best time to visit Castries in June Weather, crowds & prices
Weather in Castries in June
Average temperature 29°C, 71 mm of rain, about 28 days with 6+ hours of sunshine and 79% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
June score
9.0/10
Ranked #7 of 12 months
- Avg temp
- 29°C
- Rainfall
- 71 mm
- Humidity
- 79%
- Days with 6h+ sun
- 28
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
June in Castries scores 9.0/10 for beach and coastal travel - ranked #7 of 12. Expect around 29°C, 71 mm of rain, and roughly 28 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.
June is one of the strongest months in Castries (7th)
Days in June average 29°C (84°F) and humidity near 79% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Budget for roughly 71 mm of rain this month — a flexible day or two helps — with about 28 days with 6+ hours of sunshine and 12.8 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Castries at 9/10 (7th of 12), just behind March at 9.8/10.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.
Expect low-season pricing, and crowds are light for this destination.
Frequently asked
- What is the weather like in Castries in June?
- In June, Castries averages 29°C, 71 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 9.0/10.
- Is June a good time to visit Castries?
- June earns a 9.0/10 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 June?
- Expect about 71 mm of rain in June. Average humidity is 79% and there are about 28 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.