Hello Doves
I see there is controversy as to when the flood waters subsided, and the time of year it came about.
I asked myself  these questions:

1.  What was the temperature at the time, (if) it were Chesvan/ September-October?
Answer: Mount Ararat or Agri Weather (10-18 F)
  http://www.mountain-forecast.com/peaks/Mount-Ararat/forecasts/5165

2. What time of year is best for planting a vineyard?
Answer:
Late winter or early spring, (if) there is enough moisture to sustain the plants until the spring rains. (or where one can irrigate without freezing)

Why these two questions?
Because we know that Noah planted a vineyard;
1. Around the time the Ark had come to rest
2. After the waters had subsided
3. After the land was dry, and they could all go forth on dry land.

I do not think Noah planted the vineyard on the first day the earth was dry.

No doubt he had plenty of work to do, after all, the animals and birds etc. had left the Ark. Noah lived there where the Ark had rested.
I am sure he did not want all the poo and waste in there, once the animals left.
One  would want a clean house.
I believe the time was 17th day of Chesvan  (Sept/Oct) when the earth was dry.
In late winter, early spring, (prime time for planting a vineyard) he planted [his] vineyard. (Jan/Feb- March-April)
There would have been plenty of moisture.

God Bless You
KML