OCN is a three letter abbreviation that stands for: 1  OCLC Control Number, a bibliographic record identifier. 2  In Oncology nursing, an Oncology Certified Nurse. 3  Opaskwayak Cree Nation. 4  Open College Network.
Autumn is from September to November and is characterised by light breezes and cooler temperatures of around 46-50ÂºF. Itâs during autumn that many exhibitions, music concerts and sports tournaments are held in Japan.
Posts: 1,495. Average high temperature of Tokyo during September is 81 F, and average low temperature of Tokyo during September is 70 F. Due to humidity in Japan temperature may feel hotter if you are not used to in humid climate. Also there is temperature difference between night and day.