Monaco in March

April through June offers perfect weather without the summer crowds. The Monaco Grand Prix in late May transforms the principality into pure chaos — book accommodation a year ahead or stay elsewhere. September and October bring warm days and cooler evenings, ideal for walking around. July and August see temperatures hit 30°C and hotel prices double. The Monaco Yacht Show in September draws the biggest boats and biggest egos. Winter months offer mild weather but many restaurants close for renovations. The Monte-Carlo Casino stays busy year-round, though summer brings more casual visitors in shorts — which the dress code doesn't allow after 8 PM.