Yuichiro Miura, a professional mountaineer summited the 8,848 metre high peak at 9 am today, said Tilak Pandey, an official at Ministry of Tourism and Culture.
Miura was accompanied by his son Gota Miura, a professional skier, and eight other climbers on top of the world.
With this Miura has taken away the record from his closest rival Nepalese climber Min Bahadur Serchan who scaled the world's highest peak in 2008 at the age of 77, becoming the oldest person to do so.
Incidentally, Serchan had also broken the previous record set by Miura, who had climbed the Everest at the age of 70 in 2003 and became the oldest summitter then.
Even this time the 81-year-old Serchan too has reached the Everest base camp and has reportedly started the journey towards the peak.
Local media reports quoted Miura's website where he termed his attempt to scale Everest at such an advanced age as a "challenge to his own ultimate limit" and as a "honour to the great Mother Nature". "And if the limit of age 80 is at the summit of Mt. Everest, the highest place on earth, one can never be happier," he said in his website.
Miura had also climbed Mt Everest at the age of 76 in 2008 and broke his own record. In the same year, Nepali climber Min Bahadur Serchan broke Miura's record at the age of 77.
Today, the government has announced to waive royalty for Serchan to climbing Mt Everest. 81-year-old Serchan, currently at the base camp, is on his way towards the summit to set another record.