STRADDLE VEHICLE

A straddle vehicle includes: an on-vehicle part disposed behind an engine and including a battery; and a traveling wind passage structure disposed at a lateral side of the on-vehicle part. The battery includes a heat radiator exposed a side surface of the battery. The traveling wind passage structure includes: an inflow port into which traveling wind flows; a outflow port from which the traveling wind flows; and a side wall that is located between the inflow port and the outflow port and defines a passage between the side wall and a side surface of the on-vehicle part. The passage includes: a heat exchange region adjacently located at a lateral side of the heat radiator; and an upstream region adjacently located upstream of the heat exchange region. A passage sectional area of the heat exchange region is smaller than a passage sectional area of the upstream region.