Sunniest cities in the world
This Map Reveals the Sunniest (and Least Sunny) Cities in the World Thrillist July 2019
Based on total annual sunlight hours
Not clear if it account for clouds
Does not consider elevation (higher = more vitamin D)
Most sunny cities in the world (#1 = most)
El Paso, Texas
Khargo, Egypt
Tuscon, Arizona
Las Vegas, Nevada
Keetmanshoop, Namibia
Phoenix, Arizona
Dakhla Oasis, Egypt
Calama, Chile
Marsa Elam, Egypt
Yuma, Arizona
Least sunny cities in the world (#1 = least)
Bogotá, Colombia
Reykjavik, Iceland
Ushuaia, Argentina
Lima, Peru
Buenaventura, Colombia
Malabo, Equatorial Guinea
Dikson, Russia
Chongqing, China
Tórshavn, Faroe Islands
Totoró, Colombia
Detailed maps and photos of the cities

See also Vitamin D Life
SAD rate 10X higher in cloudy Seattle than sunny Florida - April 2011
US Cities with least amount of sunshine - top 15 all in Washington

Note: The Founder of Vitamin D Life has lived his entire life in Western (cloudy) Washington
But is currently living in Port Townsend, 75 miles NW of Seattle, which is the sunniest portion of the state