average temperature by month saint lucia
Average temperature in St Lucia in March: 22 to 28Â°C, 72 to 84Â°F. Sea temperature in St Lucia in March: 26Â°C, 79Â°F. Average rainfall in March: 97mm, 3.8in. Events: St Luciaâs annual festival of comedy kicks off in March with events and shows throughout the month.