Saudi-led coalition air raids fell in September to 231 from 249 in August.
The number of air raids in September was 45% below the monthly average of air raids per month since the air campaign began in March 2015.
While the number of monthly strikes remains well below average for the 3.5 year-long air campaign, Sa'ada and Al-Hudaydah governorates have become the focus of the bombing with more than 76% of strikes in September targeting these two governorates.
Air raids targeted 10 of Yemen's 22 governorates in September.
The highest number of air raids recorded in a single month was September 2015, at 920.