San Diego enjoys beautiful weather year round with an average daily temperature of 70.5 degrees Fahrenheit (21.4 degrees Celsius). In April, the city typically experiences 72% sunshine and 70% humidity with an average rainfall for the month of 0.78 inches (1.98 cm).
Casual and layering options are ideal for San Diego's comfortable weather both indoors and out. Evenings are cooler, even in the summer, so be sure to bring a jacket or a light sweater. Finally, bring comfortable, breathable walking shoes especially if you plan on doing any sightseeing.
Photo Courtesy: San Diego Convention Center Corporation