Saint Lucia (Castries) weather in June
Temperature, sea and sunshine in June: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in June
Good
Best time to visit: December – July
What is the weather like in Saint Lucia (Castries) in June?
In June, Saint Lucia (Castries) is hot: daytime highs average 29 °C, and even at night it stays warm at around 25 °C. The sea averages 28.0 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 16 days, totalling 71 mm. The air is often humid and muggy. All in all, June is a good month for a holiday in Saint Lucia (Castries).
June compared
How the weather changes from May to July. Tap a month to open it.
More details for June
- Daylight
- 12 h 57 min05:36 – 18:32
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 26 km/haverage daily peakAll months
- Cloud cover
- 63 %on averageAll months
- Hot days
- 3 days30 °C or moreAll months
- Time zone
- UTC−4America/St_Lucia
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 20 %16 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in June
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Saint Lucia (Castries) in June: quick answers
Is Saint Lucia (Castries) hot in June?
Yes. In June, Saint Lucia (Castries) is hot: daytime highs average 29 °C and nights stay around 25 °C. On about 3 days the thermometer climbs to 30 °C or more.
Can you swim in Saint Lucia (Castries) in June?
Yes. In June the sea averages 28.0 °C – lovely and warm for swimming.
Does it rain much in Saint Lucia (Castries) in June?
It rains often – on about 16 days, adding up to 71 mm.
Saint Lucia (Castries) month by month
The whole year in Saint Lucia (Castries)All destinations: Saint LuciaCaribbean weather in JuneWhere to go in JuneSea temperature in June
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences