Sky-watchers will be burning the midnight oil as one of the year's most spectacular meteor showers reaches its fiery peak.

At their height, the Geminids could produce between 50 and 100 shooting stars every hour on Sunday night.

They might be glowing in multiple colours and include occasional rapid bursts of two or three.

Sydney Observatory's astronomy curator Andrew Jacob says the meteors will be most visible between 11pm and 1am in eastern Australian skies, but should be visible throughout the night.