Weather will likely play an important role when you plan your trip to Merauke, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually November and December, with an average temperature of 28°C, while the coldest months are August and July, with an average of 26°C. The rainiest months in Merauke are March, January, February and April, with each month seeing an average of 328 mm of rainfall.