Gangtok climate — normals and trends
Gangtok (India) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 16.2 °C and it receives 5,016 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is June (20.9 °C on average) and the coldest is January (9.4 °C). Rainfall peaks in July.
Gangtok averages 1 frost days, 0 hot days (≥ 30 °C) and 316 rainy days per year.
Gangtok has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The hottest day of the period reached 30.8 °C (on 2 May 1960) and the coldest -7.6 °C (on 25 January 1953).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
GangtokSikkim
- coords
- 27.33°, 88.61°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.2°C
Average daily high
20.1°C
Average daily low
13.0°C
Annual rainfall
5,016mm
Sunshine / day
8.4h
Mean relative humidity
83%
Average peak wind
6.0km/h
Seasonal range
11.5°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
316 d/yr
Annual snowfall
9.4 cm
Average feels-like high
21.5 °C
Average feels-like low
13.2 °C
Average peak gust
30.2 km/h
Tropical nights (≥ 20 °C)
10 d/yr
Solar radiation
13.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.74 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
30.8 °C
2 May 1960
Coldest day
-7.6 °C
25 January 1953
Wettest day
305 mm
17 August 2011
Windiest day
12.4 km/h
7 October 2021
Strongest gust
70.2 km/h
5 October 2025
Hottest feels-like
35.6 °C
1 August 2024
Coldest feels-like
-11.5 °C
25 January 1953
Snowiest day
17.0 cm
6 January 1945
Sunniest day
13.6 h
8 June 1960
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 16.1 °C | +2.6 °C | 142 mm | -87 mm |
| Feb | 15.3 °C | +0.1 °C | 363 mm | +137 mm |
| Mar | 19.3 °C | +0.5 °C | 320 mm | +108 mm |
| Apr | 22.3 °C | +0.4 °C | 182 mm | -11 mm |
| May | 23.2 °C | -0.1 °C | 501 mm | +219 mm |
| Jun | 25.7 °C | +1.7 °C | 453 mm | -173 mm |
| Jul | 26.0 °C | +2.7 °C | 673 mm | -468 mm |
| Aug | 24.8 °C | +1.2 °C | 1394 mm | +432 mm |
| Sep | 25.3 °C | +2.1 °C | 998 mm | +449 mm |
| Oct | 23.2 °C | +1.8 °C | 335 mm | +89 mm |
| Nov | 20.6 °C | +2.6 °C | 76 mm | -107 mm |
| Dec | 17.4 °C | +2.2 °C | 84 mm | -85 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Gangtok?
Gangtok has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 16.2 °C and it receives 5,016 mm of precipitation per year.
What is the hottest day ever recorded in Gangtok?
The hottest day measured in Gangtok between 1940 and 2025 was 2 May 1960, reaching 30.8 °C.
What is the coldest day in Gangtok?
The coldest day measured in Gangtok between 1940 and 2025 was 25 January 1953, at -7.6 °C.
Does it snow in Gangtok?
Yes. Gangtok gets on average 9.4 cm of snow per year and has around 1 frost days.
Has the climate of Gangtok warmed?
Yes: Gangtok warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gangtok?
The wettest day measured in Gangtok between 1940 and 2025 was 17 August 2011, with 305 mm of rain in 24 hours.
What was the windiest day in Gangtok?
The windiest day measured in Gangtok between 1940 and 2025 was 7 October 2021, with winds reaching 12.4 km/h.
What is the warmest month in Gangtok?
The warmest month in Gangtok is June (20.9 °C on average); the coldest is January (9.4 °C).
How much does it rain in Gangtok?
Gangtok receives on average 5,016 mm of precipitation per year, spread over about 316 rainy days.
Is it sunny in Gangtok?
Gangtok gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gangtok?
The heaviest 24-hour snowfall measured in Gangtok between 1940 and 2025 was 6 January 1945, with 17.0 cm.
Are there tropical nights in Gangtok?
Yes: Gangtok has on average 10 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gangtok?
In Gangtok, between 1940 and 2025, the highest apparent temperature reached 35.6 °C on 1 August 2024, and the lowest was -11.5 °C on 25 January 1953.
Compare Gangtok with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gangtok