Hanoi autumn is a season to be sang about.The cool weather of autumn bridges the crips, cold weather of winter with the brilliant, sparkling hot sun of summer, giving Hanoi a unique atmosphere from September to November each year.The autumn sky clears into a brilliant, cloudless blue, giving space to the greenery that's unfolded during a lush season of rain.The autumn twilight gives a golden shade of familiar summer sun and a change of cool breeze typical of the season.Source: Vietnam News Agency