Regional variations in the Climatic Conditions of India.
(i) Temperatures
(a) During summer Rajasthan desert experiences temperatures as high as 50°C on a day while Pahalgaon in J and It·as low as 20°C.
(b) On a winter night Drass (J and K) experiences temperature as low as - 45°C while temperature on the same night is 20°C at Thiruvananthapuram.
(c) Temperatures in Kerala and in Andaman and Nicobar Islands remain uniform throughout the year.
(ii) Precipitation
(a) In the Himalayas precipitation generally occurs in the form of snow while in the rest of the country, precipitation occurs in the form of rainfall (water droplets).
(b) Precipitation is very heavy in Meghalaya. It is more than 400 cms of rainfall annually. On the other hand, it is less than 10 cm. in the Rajasthan desert and Ladakh region.
(c) Tamil Nadu coast receives rainfall during the seasons of retreating and winter (October to December) while rest of the country receives rainfall during the season of south-west monsoon (June to September).

Parts of Rajesthan, Gujarat and the leeward side of the Western Ghats are dought prone because of the following reasons:
(a) Rajesthan and Gujarat generally fall parallel to the Arabian branch of the south-west monsoon. This branch does not cause rainfall in this region as Aravli hills fall parallel to these monsoon winds and do not cut as a barrier.
(b) The windward side of the Western Ghats receive heaviest rainfall due to instant ascent of the south-west monsoon winds on the slope of the Western Ghats and shed maximum moisture there.
When they cross the windward slops and come on the leeward side they become dry and cause very little rainfall. Hence, these areas remain rainless or receive very scanty rainfall.

1. The delta region of the eastern coast is frequently struck by cyclones of the following reasons:
2. When there is dry season, tropical cyclones develop on the Andamen Sea.
3. Intense cyclones come in the infulence of  easterly jet stream. They are boosted into Ondia. They first the delta regions on the east coast and cause heavy rainfall.
4. Some cyclones also develop during the season of retreating monsoon. they are very intense and cause havoc on the Orissa Andhra and Tamil Nadu coasts, during October and November.

(i) The unifying influence of the monsoon is quite perceptible.
(ii) The Indian landscape, animals, plants, agriculture, peiople including their festivities, revolve around this phenomenon.
(iii) All indians from north to south and from east to west , eagerly await the arrivals of the monsoon.
(iv) These monsoon winds bind the whole country by providing wwater to set the agricultural activities in motion.

The word monsoon is derived from Arabic word 'Mausim' which means season. IT implies the seasonal reverasal in the wind pattern over the year. Monsoon is the seasonal winds reverse their direction with change in seasons:
(a) From sea to land during summer.
(b) From land to sea during winter.
(i) 'Break' in monsoon means the sudden start of the monsson or onset of the monsoon.
(ii) The monsoon has tendency to have burst or 'breaks' in rainfall. In other words it has wet and dry spells.
(iii) Monsoon rains take place only for a few days at a time.
(iv) They are interspersed with rainless intervals.

Latitude, altitude, pressure and wind systems, distance from the sea, ocean currents and relief.

Rajasthan desert have hot climate temperature and low rainfall.

(i) Because there are perceptible regional variations in climatic conditions within the country.
(ii) These conditions vary from place to place and season to season.

Rainiest month July and the rainfall is 19.3

We find great variations not only in the form and types of precipitation but also in its amount and the seasonal distribution
(a) Forms and Types of Precipitation
1. Precipitation is mostly in the form of snowfall in the Himalayas.
2. It is only in the form of rains over the rest of the country
(b) Annual Variation in Rainfall
1. Annual precipitation varies from over 400 cm in Meghalaya to less than 10 cm in Ladakh and western Rajasthan.
2. Most parts of the country receive rainfall from June to September
3. Tamil Nadu coast gets most of its rains during November and December (the months of retreating and winter respectively). 
(c) Locationwise Variations in Rainfall and Temperature
1. Coastal areas experience less variations in temperature conditions.
2. Interior of the country have more seasonal variations
3. Rainfall decreases generally from east to west in northern plains.
4. Climatic variations have resulted in variety of lives of people -in terms of the food, the clothes and the kind of houses of the people.