The best months to visit Saint Lucia are January and February. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in Saint Lucia: January 26°C / 37mm; February 27°C / 26mm; March 28°C / 31mm; April 29°C / 40mm; May 29°C / 53mm; June 28°C / 72mm; July 28°C / 92mm; August 28°C / 105mm; September 28°C / 107mm; October 28°C / 122mm; November 28°C / 106mm; December 27°C / 48mm.