Weather is probably a major factor when you plan your trip to Hamirpur, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually May and June, with an average temperature of 34°C, while the coldest months are January and December, with an average of 19°C. The rainiest months in Hamirpur are July, August, September and June, with each month seeing an average of 217 mm of rainfall.