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.
The winter season is the driest time of the year. The only precipitation is the snowfall in the north and west coast of Japan where it is good for winter sports. December to February has very short days, 5:00 pm sunsets, and very cold temperatures, around 40 degrees Fahrenheit or 5 degrees Celsius.