Due to the fact that fewer people relocate during wintertime, the competition in the housing market is not so intense. Hence, landlords cannot demand high rents, as it is a well-known fact that many apartments are vacated throughout this period, and that is a clear loss for the landlord.
Also, if you are looking to buy real estate, one of the more common house-hunting tips is to do it during wintertime, as lighter competition has the potential to affect real estate prices even more. Most people who are selling are often in a hurry to do so, and negotiating a good price is more likely. Nonetheless, be sure to check websites like Numbeo and see the cost of living of your desired destination.