India has a hot tropical weather with variations from region to region. Coolest weather lasts from November to mid-March, with cool, fresh mornings and evenings and dry, sunny days. Really hot weather, when it is dry, dusty and unpleasant, is between April and June. Monsoon rains occur in most regions in summer between June and September.
The Himalayas
Most hill stations are best from March to June. July to August is the monsoon. Winters can be quite cold. Shimla is higher and therefore colder in winter and places like Pahalgam. Gulmarg and Manali under several feet of snow (December to March) and temperatures in Ladakh can be extremely cold. The road to Leh is open from June to October.
Required clothing – Lightweight to medium weights from March to October. Warmer wear for winter. Weather can change rapidly in mountains and it is therefore important to be suitably equipped.
Northern Plains
This region has an extreme climate, warm inland from April to mid-June falling to almost freezing at night in winter, between November and February. Summers are hot with monsoons between June and September.
Required clothing
Lightweight cottons and linens in summer with warmer clothes in winter and on cooler evenings. Waterproofing essential during monsoons.
Central India
The State of Madhya Pradesh escapes very worst of hot season but monsoons are heavy between July and September. Temperatures fall at night during winter.
Required clothing
Lightweights most of the year with warmer clothes during evenings particularly in winter. Waterproofing essential during monsoons.
Western India
November to February is most comfortable, although nights can be cold. Summers can be extremely hot with monsoon rainfall between mid-June and mid-September.
Required clothing
Lightweight cottons and linen most of the year with warmer clothes for cooler winter and Waterproofing essential during monsoons.
Southern India
The most pleasant weather is from November to March. Monsoon rains between late April and July. Summer temperatures are hot as high as Northern India although humidity is extreme. Cooling breezes on coast . Inland, Mysore and Bijapur have pleasant climates with relatively low rainfall.
Required clothing
Lightweight cottons and linen throughout the year. Waterproofing essential during monsoons.