Internet Speed in Japan increased to 20171.96 KBps in the first quarter of 2017 from 19574.52 KBps in the fourth quarter of 2016. Internet Speed in Japan averaged 11538.60 KBps from 2007 until 2017, reaching an all time high of 20171.96 KBps in the first quarter of 2017 and a record low of 6541.92 KBps in the third quarter of 2007. source: AKAMAI