The MET Service is forecasting bad weather on Sunday into Monday.
It has issued a yellow level adverse weather alert that will be active from 6am on Sunday, to 8pm on Monday.
It says there is a medium (40-60%) chance of heavy to intense showers and/or thunderstorms developing from Sunday morning, with significant rainfall to continue into Monday.
Heavy/intense downpours will lead to street/flash flooding, while gusty winds in excess of 65 km/hr can be expected.
It warns that the risk of landslides/landslips is very high in areas so prone, and persons are urged to make preparations to safeguard life and property.