Public health is the science of protecting and improving the health of families and communities through promotion of healthy lifestyles, research for disease and injury prevention and detection and control of infectious diseases.
In the spring, southern and western Japan can be quite warm and sunny, from 59 to 77 degrees. Northern Japan ranges from 50 to 68 degrees. Snow remains on the hills into April or May in northern areas. And like Spring in much of the U.S., weather can range significantly from mild, to warm, to cold, on a daily basis.
Japan Climate - overview of Japan's climate and Japan's Weather including weather forecasts for Tokyo. Japanese are proud of their four seasons (and a surprising number believe the phenomenon is unique to Japan), but the discerning tourist should try to aim for two of them. Spring is probably the best time of year to be in Japan. The temperatures are warm but not hot, there's not too much rain, and March-April brings the justly famous cherry blossoms and is a time of revelry and festivals.