Weather is probably a major factor when you plan your trip to Yanam, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually May and April, with an average temperature of 31°C, while the coldest months are January and December, with an average of 25°C. The rainiest months in Yanam are July, September, August and June, with each month seeing an average of 280 mm of rainfall.