East Sikkim has a temperate climate with warm summers and cold winters.
Temperatures peak in June and drop to their lowest in January, while rainfall is highest during summer months.
Humidity remains moderate throughout the year creating cold and damp conditions.
| Month | 🌤️ | Avg High | Avg Temp | Avg Low | Record High | Record Low | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|---|---|
| January | 🌨️ | 6.4°C | 0.9°C | -4.7°C | 14.8°C | -12.8°C | 58% | 5 | 1.2 | 3.47 |
| February | 🌨️ | 7.6°C | 1.8°C | -3.9°C | 15.5°C | -15.9°C | 58% | 12 | 1.5 | 3.81 |
| March | 🌨️ | 10.8°C | 5.0°C | -0.9°C | 18.0°C | -12.9°C | 56% | 28 | 1.7 | 4.37 |
| April | 🌨️ | 13.8°C | 7.9°C | 2.0°C | 19.2°C | -8.1°C | 61% | 53 | 1.8 | 4.90 |
| May | ☔ | 16.0°C | 10.7°C | 5.3°C | 22.3°C | -0.1°C | 75% | 95 | 1.8 | 4.86 |
| June | 🌧️ | 17.9°C | 13.5°C | 9.0°C | 23.5°C | 3.1°C | 83% | 171 | 1.9 | 4.61 |
| July | 🌧️ | 17.6°C | 13.9°C | 10.2°C | 22.5°C | 6.8°C | 88% | 265 | 1.8 | 4.15 |
| August | 🌧️ | 17.3°C | 13.6°C | 9.9°C | 20.9°C | 6.6°C | 89% | 213 | 1.7 | 4.10 |
| September | ☔ | 16.1°C | 12.2°C | 8.4°C | 20.0°C | 1.6°C | 88% | 145 | 1.5 | 3.90 |
| October | 🌨️ | 13.6°C | 9.0°C | 4.5°C | 18.9°C | -0.9°C | 81% | 46 | 1.2 | 4.23 |
| November | 🌨️ | 10.5°C | 5.7°C | 0.8°C | 16.1°C | -8.7°C | 71% | 5 | 1.0 | 3.90 |
| December | 🌨️ | 8.1°C | 2.8°C | -2.4°C | 13.9°C | -13.4°C | 60% | 3 | 1.0 | 3.48 |
Showing average climate conditions across 45 years (1981–2025)
🧥 Expect frosty nights and below-freezing temperatures during this Cold Winter period.
🌤️ Conditions are ideal for outdoor activities throughout the day in this Mild Summer.
☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.
Monthly averages · 1981–2025 climate normals · °C
Temperatures rise steadily from spring, peak in June, and gradually decline through autumn into winter.
These seasonal patterns make summer pleasant for travel, while winters can bring frost and occasional snowfall.
Monthly rainfall · 1981–2025 seasonal trends · mm/month
Rainfall is concentrated in the summer months. Humidity stays moderate (around 72%), peaking during summer months, which creates cold and damp conditions.
☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.
Monthly averages · 1981–2025
Across 45 years of records, East Sikkim's temperature has remained relatively stable over the past decade. Its hottest day reached 23.5°C in June 1988, and its coldest dropped to -15.9°C in February 1989. 2025 was the warmest year overall and 1997 the coolest.
The warmest year in East Sikkim's recorded history was 2025 (avg: 8.8°C), while the coldest was 1997 (avg: 7.1°C).
Average annual high/low · Last 30 years · °C
Total annual precipitation · Last 30 years · mm/year
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|---|---|
2025 | 13.4°C | 8.8°C | 4.3°C | 21.2°C | -6.7°C | 1692 | 79% | 1.4 m/s |
2024 🌧️ | 12.8°C | 8.4°C | 4.0°C | 20.4°C | -8.9°C | 2262 | 79% | 1.4 m/s |
2023 | 12.6°C | 8.2°C | 3.8°C | 20.4°C | -7.6°C | 1708 | 79% | 1.4 m/s |
2022 | 12.5°C | 8.2°C | 3.9°C | 19.6°C | -14.4°C | 1933 | 83% | 1.5 m/s |
2021 | 12.5°C | 8.2°C | 3.9°C | 19.3°C | -7.8°C | 1940 | 79% | 1.4 m/s |
2020 | 12.0°C | 7.7°C | 3.5°C | 19.5°C | -12.3°C | 2089 | 81% | 1.5 m/s |
2019 | 12.3°C | 7.8°C | 3.3°C | 20.3°C | -12.9°C | 1606 | 79% | 1.5 m/s |
2018 | 12.3°C | 7.9°C | 3.4°C | 19.0°C | -13.4°C | 1519 | 78% | 1.5 m/s |
2017 | 12.8°C | 8.4°C | 4.1°C | 20.3°C | -9.0°C | 1476 | 77% | 1.5 m/s |
2016 | 13.0°C | 8.6°C | 4.3°C | 19.2°C | -7.7°C | 1613 | 77% | 1.5 m/s |
Showing 1 to 10 of 45 years
Based on 45 years of data (1981–2025), June is typically the hottest month in East Sikkim, Sikkim, with average high temperatures around 17.9°C.
January is the coldest month in East Sikkim, with average low temperatures around -4.7°C.
July receives the most rainfall with approximately 265 mm, while December is the driest with 3 mm.
The highest recorded temperature was 23.5°C in June 1988. This is part of the historical record spanning 1981–2025.
The lowest recorded temperature was -15.9°C in February 1989.
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
East Sikkim receives the most sunlight in April with an average solar radiation of 4.90 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning and agriculture in Sikkim.
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.
