If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Ngatangiia: The hottest months are usually March and February, with an average temperature of 27°C, while the coldest months are August and September, with an average of 23°C. The rainiest months in Ngatangiia are January, March, December and February, with each month seeing an average of 232 mm of rainfall.