Fairweather is a surname. Notable people with the surname include:
Al Fairweather (1927–1993), British jazz musician
Andy Fairweather Low (born 1946), Welsh guitarist, songwriter and vocalist
Bruce Fairweather, American guitarist/bassist
Carlton Fairweather (born 1961), English footballer (association football)
Denvor Fairweather (born 1975), Belizean television producer and executive
Digby Fairweather (born 1946), British jazz cornettist and broadcaster
Drew Fairweather (born 1979), American author
Fred Fairweather (born 1913), Australian footballer (Australian rules football)
G. Ernest Fairweather, Canadian architect
Gaynor Fairweather, British ballroom dancer
Gordon Fairweather (1923–2008), Canadian lawyer and politician
Ian Fairweather (1891–1974), Australian painter
Jack Fairweather (1878–1948), Canadian lawyer and politician
Jackie Fairweather (born 1967), Australian triathlete and long-distance runner
Kate Fairweather (born 1975), Australian archer
Ken Fairweather, Papua New Guinean politician
Patrick Fairweather (born 1936), British diplomat
Simon Fairweather (born 1969), Australia archer
Steven Fairweather (born 1977), Canadian musician
Fictional characters:
Angela Fairweather, character in the Power Rangers universe
Gerry Fairweather, character in the BBC soap opera EastEnders