Singapore lies north of the equator.
Singapore . It lies one degree ( 137 km ) north of the equator , at the southern tip of peninsular Malaysia , with Indonesia 's Riau Islands to the south . Tropical waves , easterly waves , or tropical easterly waves , also known as African easterly waves in the Atlantic region , are a type of atmospheric trough , an elongated area of relatively low air pressure , oriented north to south , which moves from east to west across the tropics causing areas of cloudiness and thunderstorms .