Weather Underground: Japan Offers current weather conditions for a nationwide list of cities, including barometric pressure, humidity, winds, and time of last update. http://www.wunderground.com/global/JP.html Wunderground.com~Site InfoWhoisTrace RouteRBL Check
NOAA NWS - Japan Weather US government site provides hour-by-hour weather conditions for the past 24 hours for major cities and locations in the country. http://weather.noaa.gov/weather/JP_cc.html Noaa.gov~Site InfoWhoisTrace RouteRBL Check