Weather will likely play an important role when you plan your trip to Atambua, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually October and September, with an average temperature of 26°C, while the coldest months are August and July, with an average of 26°C. The rainiest months in Atambua are March, December, February and January, with each month seeing an average of 294 mm of rainfall.