With a population of around 19,800, Onsong sits in North Hamgyong, KP. The city operates in the Asia/Pyongyang time zone.
Recent weather here gives a sense of typical conditions: in 2025, Onsong recorded a mean annual temperature of 46°F, ranging from -6°F lows in February to 95°F highs in July, with about 27 inches of precipitation across the year.
View historical weather for Onsong · More cities in North Hamgyong