Bulk ageing a beer, what’s the correct temperature?

Northern Brewer General
1

For the ales that I bulk age I hold them at 68F.

2

I’m bulk aging a British barleywine in a corner in my brew room where it’s 62-64 in the winter.

3

I bulk age in my basement where the temp is 68f in the summer and slowly goes down to 60f during the coldest days of winter. I get mid 60’s for many months and do most of my ageing during this time.