Saint Lucia Weather & Climate: Best Time to Visit

With minimal seasonal shifts, Saint Lucia experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in September to a comfortable 29°C (84°F) in the coolest month, January.

Nights vary from 26°C (79°F) in September to around 24°C (75°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Saint Lucia receives mid-range precipitation levels, with 969 mm (38 in) annually. The climate in Saint Lucia shows significant variation throughout the year. Expect high rainfall in October, the wettest month, with an average of 137 mm (5.4 in) of precipitation over 18 rainy days.

In contrast, the driest month February offers drier and sunnier days, with around 36 mm (1.4 in) of rainfall over 13 rainy days. For more details, please visit our Saint Lucia Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

If you're planning a trip to Saint Lucia, rest assured that sunshine is an important factor. With peak sunshine in May at 8.3 hours daily and a slight dip to 7.1 hours in October, it maintains a sunny destination year-round.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Saint Lucia.

The city experiences its highest humidity in November, reaching 84%. In April, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year