(a) India is closer to the equator; as a result the sun’s rays directly fall over there, while they fall at angles on the poles as in Greenland. Hence, places in India are warmer than the Greenland.
(b) It is generally cooler nights during the nights than during the day, as during the day the sun rays heat up the earth.
(c) As Mumbai is closer to the sea it has greater humidity than places like Delhi that are far away from the sea.