Bangalore is a quite pleasant city throughout the year.
Summers (March to May) - the climate is very pleasant in Bangalore. It offers all the tourists to visit in mild climate with a maximum. It has temperature of 34°C even in summers.
Monsoons (June to August) are a windy season with mild to heavy rains. From September to October North-West monsoon with rainy days are expected to be seen.
Winters (November to February) - it is one of the coolest periods with temperature falling near to 10°C.
Even though tourists can make a picnic trip to Bangalore but the pefect season to visit is September to February in order to experience the cool serene environment and enjoy the posh celebrations.