It’s the height of summer here in North America and the sun is often beating down; but pumps still need coverings even in the hot/dry weather! We’ve had NPSH issues because of temperate increases of pipping being in the sun, and even pumps misaligning because of being painted black and sitting in direct sunlight, causing thermal expansion.
Proper pump housing will also be important in six months during winter weather, when the elements can cause pipe freezing, issues with dry-priming systems, electrical issues in water, and more.