Weather will likely play an important role when you plan your trip to Hassan, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and March, with an average temperature of 25°C, while the coldest months are January and December, with an average of 21°C. The rainiest months in Hassan are July, August, June and October, with each month seeing an average of 225 mm of rainfall.