noun
Refers to a moderate amount of moisture or dampness, often in the air, soil, or objects. Not as strong as 湿気 (しっけ), which can imply uncomfortable humidity.
この部屋は湿り気が多い。
This room has a lot of dampness.
土に湿り気があるうちに種をまく。
Sow the seeds while the soil still has moisture.
湿気 (しっけ) often refers to uncomfortable, excessive humidity, while 湿り気 (しめりけ) is a more neutral term for moderate moisture or dampness.
Compound of 湿り (しめり, 'moisture', from verb 湿る しめる) + 気 (け, 'feeling, sign'). The け is a suffix indicating a state or quality.