View from the Kahekili Highway on Maui, looking east. The narrow winding road stretches along the mostly-undeveloped north shore of West Maui, in the foreground. The dormant Haleakala volcano that forms East Maui looms in the background. Though it looks like another island, an isthmus formed by ancient lava flows from Haleakala connects it to West Maui.
If you look closely at East Maui, at the upper right of the picture, you can see an area of falling rain. Patches of isolated showers are an example of “micro-climate,” a distinctive feature of Hawaiian weather. Rain can be falling on one beach while another beach a few kilometers away enjoys cloudless sunshine.