Tahiti actually doesn't get all that cold and actually Tahiti stays pretty warm even in winter months.
If you want to escape winter where you are then going to Tahiti in wintertime is a great thing because it stays nice and warm in Tahiti during winter.
Tahiti winter temperatures range from 70-82 degrees Fahrenheit, while in the low season, summer, temperatures vary from 70-85 degrees Fahrenheit.
Winter time is the high season for Tahiti and during those times it stays really nice and warm.
At night the low temperatures usually stay around 60 F to 70 F all year long.
Tahiti would be a wonderful place for some people to live year round especially if you hate winter.