In Romania, autumn is consider to be the period between September to November. The weather in September is pleasantly warm with high temperatures ranging between 25 to 30 degrees Celsius ( 77 to 86 F) , and low temperature ranging from 0 to 15 degrees Celsius ( 32 to 59 F) during the night. September is the month when the leaves from the treas are starting their transition from green to rust, but the clorophil is still existing in large amounts in the foliage, masking any other pigment that might dare to challenge its supremacy in the melting pot of colors.
In October, the weather it’s starting its shift to cold season, with some nights with freezing temperatures, but with still a lot of warm and sunny days. The predominant color is green at the begging of the month, but the signs that it is starting to loose the battle with the army of amber are more and more present.
But the wonder of autumn is starting to appear in mid October, when the battle between emerald tones and orange hue is ending with an explosion of a stunning array of browns, pinks, oranges, auburns, yellows and ochres. Is the period when the leaves are still decorating the trees, and the joy of life doesn’t show any sign of weariness.
November is the month when winter is waiting at the corner, the night are freezing cold, the mornings are bathed in mist, and the trees are naked, with the leaves resting at their feet, like a rusting blanket.
So, if you want to tour in Romania, for admiring the autumn colors, my suggestion is to choose the mid October. Look for the forest with different type of trees ( linden, birch, walnut, beech, sycamore, maple, oak,) in order to get the whole array of colors. There are good chances of pleasant weather in this period (this year for example we had 2 weeks of Indian summer ).
A tour on Transfagarasan in this time of the year gives you the opportunity the contrast between the birch trees and the fir trees on the north side, or the kaleidoscope of orange, red and brown of the deciduous forests from the South side. A tour in the country side would be also a good option, as you’ll find there a lot of walnuts, linden or acacia trees.