When talk turns to near-perfect year-round climates, Perth and Cape Town may have their followers but our vote goes to a holiday in San Diego. The average daily high temperature does not fall below 65f at any time of the year, neither does it rise above 80f. Humidity is low and the sunshine average is around 70f. It's hardly surprising that the lifestyle here is based around outdoor activities. There are 70 miles of coastline beaches, it's a sailing mecca and the area boasts some 80 golf courses.