Sunny Yuma

Yuma, Arizona, is indeed among the sunniest cities: the city’s fact sheet lists about 4,050 sunshine hours per year out of 4,456 possible. A U.S. Weather Bureau historical table through 1948 gives 4,031 hours (90%). The exact figure therefore depends on the period and source, and “sunniest in the world” is best treated as a record or tourism designation rather than a timeless global normal.