Japanese houses can feel cold during the winter months due to several factors such as their geographical location, construction materials, lack of insulation and traditional heating systems. However, newer homes may have better insulation and double-glazed windows installed. Japanese culture also values conservation of resources, which means that people tend to keep their homes at a lower temperature. The temperature inside Japanese homes can vary depending on their location within the country, with homes in colder regions feeling colder than those in warmer areas.