Hi Adriaan – Thanks for the informative comment. Yes, plums bloom at the very beginning of spring in Japan, so it would’ve been a cold night, and his original audience would’ve understood that immediately. I didn’t go into kigo in this commentary because I didn’t want to scare off the average reader by making him or her think that one needs a specialized knowledge to understand haiku. But as with everything, the more one knows about something, the better one can appreciate it.
I really like your translation! Short and sweet.