In studying the causes of crime, most criminologists have concentrated on traditional socio-demographic variables, such as age, sex, race, and socio-economic status. However, some researchers have investigated the influence of the physical environment on criminal behaviour. There is a recent theoretical basis for research into the influence of weather on crime: the situational approach, rational choice theory, and routine activities theory all suggest that weather could significantly influence crime rates and criminal behaviour. This paper brings together for the first time the accumulated research on weather and crime. It discusses the theoretical background, examines research into the influence of different weather conditions (such as high temperatures, rain, and wind) on various types of criminal behaviour, outlines problems with the current research, and suggests ways of advancing knowledge about weather and crime.