Commentary
April to June and September to December are the most comfortable times in Hanoi. April is hot with temperatures around 30 degrees C, but sunny weather is common; September to November is slightly cooler, with temperatures around 25 degrees C, and there are many sunny days. June is a very hot month with temperatures around 40 degrees C, and the rainy season is from June to August. December is cool and misty, and it is cold and below 10 degrees C from the end of December to March, so bringing a coat, jacket, scarf, etc. is recommended.
Reference
Reference
Tokyo's climate
Weather Altas "Monthly weather forecast and climate Tokyo, Japan"
Retrieved June 5, 2020, from https://bit.ly/3dBbSTF
Hanoi's climate
Weather Altas "Monthly weather forecast and climate Hanoi, Vietnam"
Retrieved June 9, 2020, from https://bit.ly/2XJ5F2w
Comment
Vietnam National Administration of Tourism, "Official Website Vietnam Tourism"
Retrieved July 27, 2020, from https://bit.ly/2EiMs0h
