The best time to see Christmas Island Red Crab Migration in 2026 is November to December 2026.
Timing status: Natural timing window.
Wildlife migration · November to December 2026
Annual · rain-triggered
Tens of millions of red crabs march from the forest to the sea to spawn.
When the wet season arrives, Christmas Island's red crabs leave the rainforest en masse and stream to the coast to breed, timed to the moon. It is one of the planet's great mass-movement spectacles.
red crabs migrate: Tens of millions
Where it is visible: Christmas Island, Australia
The march is triggered by the first wet-season rain and timed to a lunar phase, so exact dates vary.
Christmas Island Red Crab Migration 2026: November to December 2026.
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