Average high temperature and rainfall for St. Lucia in June. © Scott S. Bateman

St. Lucia’s weather in June has an increasing risk of rain thanks to the annual Caribbean hurricane season.

St. Lucia is a popular island to visit for its hotels and resorts. It’s also a common stop on eastern Caribbean cruises.

The island is especially popular during the dry season from January through May. Its popularity drops off during the St. Lucia rainy season, which begins in June and gets steadily worse until September and October.

The following averages come from years of data and may vary somewhat from year to year. But they are a useful guide for what to expect with St. Lucia in June.

St. Lucia Temperatures in June

The average high temperature for St. Lucia in June is 87 degrees Fahrenheit or nearly 31 Celsius, according to St. Lucia Meteorological Services. The average low temperature, usually at night, is 77 degrees Fahrenheit or 25 Celsius.

St. Lucia temperatures in June historically reach the highest level of the year. The average high temperature stays at 87 degrees Fahrenheit or 31 Celsius from June through October.

Water temperatures hover about midway between the daytime high and nighttime low air temperatures. They are comfortable for swimmers in June.

Rainfall in June

This compares to just less than three inches in May, a low point of the year of less than two inches in January and a high point of nearly eight inches in September and October.

It rains on average 16 days in June compared to 14 days in May. This compares to a low of 11 days in January and a high of 21 days in July and August.

Should I Go in June?

St. Lucia weather in June historically is not any warmer in June than it is in May. But the risk of total rain and how often it rains is somewhat higher in June.

So May is a better month than June for anyone planning to visit the island via hotel or cruise. But June also has a lower risk of rain than July or August. So travelers who want a summer visit to the Caribbean because of breaks from school should consider June as a better choice than July or August.

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