Nandi Hills, early in the morning around 5:30, in the month of Jan-Feb or during monsoons.
Other best places to visit in monsoon are Chimagalur, famous for coffee plantation and has highest trekking point, and, Manglore, Madikeri and Ooty. You can also visit historical places like Hampi, Mysuru.
Bengaluru offers you many options for weekend Getaways.. Within 250kms,
Coorg- Nature and resorts, Mysore and Bandipur - perfect combo of nature and culture
Hassan ( Beluru and Halebeedu, Shravanabelagola) - Known for temples and its architecture.
Sakleshpur, chikamagaluru - Nature, coffee estates and spices... Hope you will have a great vacation 😊