The best time to visit Howrah is from September to March, when you will get to enjoy the festivity and enjoy sightseeing of this place. During this time, you would be able to to witness the grand celebrations of Durga Puja, the worship of the goddess of strength, which symbolizes good over evil. Durga Puja is a ten day ritual / celebration held during the month of October. So, make your Howrah trip plan accordingly.