Weather will likely play an important role when you plan your trip to Erimo, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and September, with an average temperature of 18°C, while the coldest months are February and January, with an average of 1°C. The rainiest months in Erimo are August, September, October and July, with each month seeing an average of 181 mm of rainfall.