October weather forecast and climate
Castries City, Saint Lucia

October, like September, is another tropical autumn month in Castries City, Saint Lucia, with average temperature varying between 23°C (73.4°F) and 30°C (86°F).

Temperature

The warmest months are May through October, with an average high-temperature of 30°C (86°F).

Rainfall

The month with the most rainfall is October when the rain falls for 18 days and typically aggregates up to 303mm (11.93") of precipitation.

Sea temperature

Months with the warmest seawater are September and October, with an average sea temperature of 29°C (84.2°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day is 11.8h.

Sunshine

October has the least sunshine of the year, with an average of 7h of sunshine.

UV index

In October, the average daily maximum UV index in Castries City is 11. A UV Index estimate of 11, and higher, represents an extreme threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 11 in October interpret into the following advice:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.