London's dark charm reveals itself on rainy days. Not the cosiest place to spend a Saturday afternoon, but quite worth the odd splash from cabs passing by.
The insanely difficult London geography test required of black-cab drivers in the city, you must master 320 basic routes, all of the 25,000 streets that are scattered within those routes, and about 20,000 landmarks and places interest within a six-mile radius of Charing Cross.
The climate of London is temperate, with modest daily high temperatures during summer and winter lows that seldom fall below freezing. Rainfall is fairly regular, occurring throughout the year. Snow occurs sometimes in winter but rarely settles more than a few millimeters deep.