average temperature st lucia
St Lucia: Annual Weather Averages. November is the hottest month in St Lucia with an average temperature of 29Â°C (83Â°F) and the coldest is January at 26Â°C (79Â°F) with the most daily sunshine hours at 10 in March.The wettest month is September with an average of 193mm of rain.t Lucia: Annual Weather Averages. November is the hottest month in St Lucia with an average temperature of 29Â°C (83Â°F) and the coldest is January at 26Â°C (79Â°F) with the most daily sunshine hours at 10 in March.