You can adjust how many days per month in the world-gen (9 days a month by default I think)
How long winter lasts depends on where you are in the world (colder climates, longer winters) if you move closer to the equator, they'll last a shorter time.
I think somebody made a chart, but I sometimes check how cold it is at midnight if I get the feeling that I'm in a cold area.
After I get a reading, I'll move somewhere more north or south and check again. Either North OR South would get you to a warmer area.
We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.