Locals have been relying on the kindness of strangers for grocery deliveries.
Another 400 homes have been yellow-stickered.
Sunday's torrential downpour left 15 houses uninhabitable.
Coastal flooding is likely to increase markedly across the world in the next 80 years, threatening hundreds of millions of people.
"We can't afford to become complacent."
"Please evacuate to safety as there is a significant risk you may be cut off."