How do you say eight clouds in Japanese?

Answer 1

hachi kumo

hachi -> 8

kumo -> cloud

Improvement:

Japanese words for numbers when used as counters have different readings and usage methods, you don't say 'ichi kumo' for 'one cloud', the same kanji for one plus a 'tsu' (つ) reads hitotsu and is followed by 'no'. In case of '8' you say 'yattsu no kumo', while the 'double T' in 'yattsu' refers to slight emphasis on pronouncing tsu as geminate.