Weather in Gangtok

Find out the most up-to-date information about weather conditions in Gangtok. Below you will find current data, forecasts, and useful charts to help plan your time.

The climate in Gangtok, located in the foothills of the Himalayas in India, can be described as temperate with a distinct monsoon influence. Distinct seasonal changes are observed throughout the year. Winter, lasting roughly from December to February, is quite cool, with average temperatures around 4.8°C - 6.9°C. Summer, from June to August, is warm and very humid, with average temperatures hovering around 16.7°C - 17.3°C. The spring (March-May) and autumn (September-November) months represent pleasant transitional periods with moderate temperatures.

One of the main features of the weather in Gangtok is high humidity and significant rainfall, which is distributed fairly evenly throughout most of the year, peaking during the summer monsoon. The highest amount of rainfall (up to 35 mm per month) and the maximum number of rainy days (30-31 days) occur in July and August. However, it is worth noting that even in relatively "dry" months, such as November or December, the number of days with precipitation remains high (about 25-26 days), creating a sensation of almost constant humidity. Extreme heat or severe frosts are not characteristic of Gangtok; the temperature regime is generally comfortable for visiting, provided you are prepared for frequent rains.

The climate in Gangtok is characterised by noticeable seasonal temperature fluctuations throughout the year. The average annual temperature varies from a cool 4.8°C in January to a comfortable 17.3°C in July. The warmest months are usually July and August, when the average maximum temperature rises to marks around 19.6°C - 19.8°C. Conversely, January is the coldest month, with an average temperature of 4.8°C and average minimums dropping to 1.6°C.

The summer period in Gangtok, covering the months from June to August, is distinguished by pleasant warm weather rather than sweltering heat. Average daily highs during this time range from 19.2°C to 19.8°C, while nighttime temperatures usually remain at the level of 14.1°C - 15.0°C. July and August are also the wettest months, which adds a feeling of warm but not excessively muggy weather. This time of year is suitable for those who prefer moderate summer temperatures for outdoor activities and walks.

Winter in Gangtok, continuing from December to February, brings cool weather. Average daytime temperatures in this season stay within the range of 8.0°C - 10.1°C, while at night they can drop to 1.6°C - 3.8°C, which is close to freezing, although severe frosts are not typical. The spring months (March-May) are characterised by gradual warming from an average of 8.7°C in March to 13.7°C in May. In autumn (September-November), there is a smooth decrease in temperature from 16.3°C in September to 9.5°C in November. Throughout the year, there is a noticeable but not extreme difference between day and night temperatures, usually around 5-7°C, ensuring cooler and fresher evenings.

In the city of Gangtok, precipitation is a frequent occurrence throughout the year; however, its intensity and amount vary noticeably depending on the season. The greatest amount of precipitation falls during the summer months, while late autumn and early winter are characterised by lower volume but still frequent precipitation.

The wettest months in Gangtok are traditionally July and August, when the average monthly rainfall reaches 35 mm. During this period, which also covers June (25 mm) and September (22 mm), a distinct monsoon rain season is observed. It rains almost daily, as evidenced by the maximum number of "wet days" – 30-31 days per month. Precipitation at this time can be quite intense.

The lowest amount of precipitation falls in November and December – averaging just 8 mm per month. However, even in these nominally "dry" months, precipitation is not a rarity: November sees about 25 "wet days," and December sees 26. This means that precipitation is likely to take the form of light rain or drizzle. Given the winter temperatures, especially the minimums (January: 1.6°C, February: 2.2°C), snowfall or mixed precipitation is possible from December to February, and sometimes in March, especially during the night and morning hours.

Overall, Gangtok is characterised by a very high frequency of precipitation year-round. The number of days with precipitation practically never drops below 25 per month (November), and at the peak of the rainy season (July, August), it reaches 31 days. This suggests that the sky over the city is often overcast, and the likelihood of encountering rain or other types of precipitation remains high regardless of the time of year; only the intensity and volume change.

When planning a trip to Gangtok, it is important to consider its unique mountain climate with frequent precipitation and noticeable temperature fluctuations throughout the year. The key principle when packing should be layering. Regardless of the season, be sure to take a waterproof windbreaker or a light raincoat, as well as a sturdy umbrella, as the number of rainy days here is high all year round. Comfortable, preferably waterproof, walking shoes are absolutely essential for exploring the hilly terrain of the city and its surroundings.

In the winter months (from December to February), when the average temperature hovers around 4-7°C and night frosts are not uncommon, you will need warm clothes: sweaters, fleece jackets, thermal underwear, a warm jacket, a hat, gloves, and a scarf. In spring (March-May), the weather gradually warms up: while the average temperature in March is about 8-9°C, by May it reaches approximately 14°C, and daily highs can rise to 17°C. In autumn (October-November), the weather is also mild, with average temperatures from 9°C to 13°C. Both in spring and autumn, warm layers and rain protection remain relevant. In summer (June-September), the average temperature rises to 16-17°C, but this is also the monsoon period with maximum rainfall. At this time, lightweight, quick-drying clothing will come in handy, but reliable rain protection remains critically important.

Besides clothing, do not forget sunscreen, as even on cloudy days, UV radiation in the mountains can be strong. Insect repellent may also be useful, especially if you plan nature hikes during the warm season. Given the frequent rains and coolness, several pairs of socks and the ability to dry things quickly will be a big plus during your journey to Gangtok.