In the comments, a farmer in New Zealand described the impact on him of October (or, to him, April):
"The darkness and the bitter cold"
Even though the winters are not too cold and there is no snow here at 36 south latitude, they can be miserable with over 1000mm of rain .
My farming ancestors are from Sweden , Scotland and England. Farming engenders a low-level background anxiety and reaches a peak in the autumn , when the shortening days and lower light levels have an almost physical influence on me as a farmer.
The anxiety is much heightened as I do the mental inventory of stock feed for the winter, food in the deep freeze for the family, completion of summer tasks, enough firewood to see us through the winter etc. Some days I am literally running at this time of year, and as one gets older , there is certainly more awareness of one's genetic make-up and deep history and the resulting drives.