Sikkim basically observes temperate climate; it enjoys five seasons, including summer, winter, monsoon, autumn and spring. Being sprawled in an area of 7,096 km², Sikkim stretches from an altitude of 280 mtr to 8,585 mtr. Due to such diverse altitudes, it experiences tropical, temperate and frigid weather in different regions. In its southern part, the climate is generally sub-tropical; while in the northern part, it is usually tundra.
In summers, the populated parts are influenced by temperate climate, where temperature seldom reaches maximum of 28°C. However, in winters, the temperature frequently drops below 0°C. The average annual temperature recorded is 18°C (approx). Although the weather continues to be chilly and humid as the rain showers come about every month. Monsoon exists from late-June to early-September; landslide becomes a common feature throughout Sikkim.
Autumn prevails from September to October, offering the best time to visit the beautiful state. Also Sikkim is one of the very few states in India to receive regular snowfall. With snowline of approx. 6,000 meters, the state's high altitude areas observe even -40°C in winters. The chilly winter begins from late-December and remains till February. At such point of time, the region gets too cold and damp because of erratic rain showers.
Location: 27°5' N - 20°9'N, 87°59' E - 88°56' E
Altitude: 280 m (920 ft) to 8,585 m (28,000 ft) above sea level
Area: 7,096 km²
Nestled below the eastern Himalayas, Sikkim lies between latitudes of 27° 5' N to 20° 9' N and longitudes of 87° 59' E to 88° 56' E. This second smallest state of India is situated in north-east. Sikkim shares its borders with the neighboring countries, such as, Nepal, Bhutan, China; and the only Indian state of West Bengal. Amidst area of 7,096 km², it stretches about 100 kms in length and approx. 60 kms in breadth.
Sikkim is oblong in its shape and is greatly influenced by mountainous terrain. The rivers, like Teesta and Rangeet, supply salubrious waters to this state. The complete setting of the state makes a horseshoe corral that works like a trap for moisture-laden winds from the Bay of Bengal. Probably that's why Sikkim receives ample rain showers throughout the year.
Kanchenjunga peak marks the coronet of Sikkim. Sikkim also brags of 28 mountain peaks, 227 high-altitude lakes, 5 hot springs, 21 glaciers, and over 100 streams. The state's one-third is covered with forests. Being dominated by rocks and hills, the region is not good for farming and agriculture. Due to deviation in elevation, Sikkim boasts of varied climate - tropical and tundra. Possibly the rich collection of flora and fauna is the outcome of its geography.