Our last peek at land was near the southern tip of the Baja peninsula. Though this picture on our final approach into Honolulu is through a scratchy window and isn't great, it illustrates several things. The Hawaiian islands are big enough and tall enough that they influence their own weather. Note that the only clouds in the picture are the ones over the land. That is pretty typical.
Trade winds force the moist ocean air up and over the islands' mass.
The Hawaiian islands are big enough that they change the processes from ocean processes to land processes. The tiny white cloud around the wing was formed by essentially the same process but this time the lower pressure and temperature were caused by the aerodynamics of the wing. An airplane wing generates lift by creating lower pressure on top of the wing. Look into the Bernoulli principle and you will learn that the low pressure is created by making the air expand a bit on top of the wing. That expansion makes the air cool just a tiny bit.