Weather is probably a major factor when you plan your trip to Trimbak, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and May with an average temp of 81°F, while the coldest months are January and December with an average of 73°F. The rainiest months in Trimbak are July, August, September, and June, with each month seeing an average of 11 inches of rainfall.