The best months to visit Gibraltar are June and May. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in Gibraltar: January 17°C / 88mm; February 17°C / 76mm; March 17°C / 79mm; April 19°C / 63mm; May 21°C / 31mm; June 23°C / 7mm; July 28°C / 1mm; August 29°C / 4mm; September 25°C / 37mm; October 21°C / 87mm; November 19°C / 100mm; December 16°C / 116mm.