The present invention provides a coating fluid including: a hydroxy group-containing resin; an inorganic layered compound; and a liquid medium, in which a ratio (outflow time (B)/outflow time (A)) of outflow time (B) of a coating fluid at 5° C. measured by a Zahn cup to outflow time (A) of a coating fluid at 24° C. measured by a Zahn cup is 1.40 or less.