monthly magazine
A magazine published once a month. Common in publishing and subscription contexts.
This monthly magazine goes on sale on the 25th of every month.
He subscribes to several monthly magazines.
月刊誌 and 月刊雑誌 both mean a monthly magazine, but 月刊誌 is the more common, everyday term while 月刊雑誌 sounds slightly more formal or technical.
Compound of 月刊 (monthly publication) and 雑誌 (magazine).