Sikkim has a warm temperate climate with warm summers and cold winters.
Sikkim has an average annual temperature of 12.1°C across all 7 cities, with approximately 1237 mm of annual precipitation and average humidity of 70%. Temperatures peak in June and drop to their lowest in January, while rainfall is highest during summer months.
The warmest city is Pakyong with average July highs of 28.6°C, while Gyalshing district (West Sikkim) is the coldest with average January lows of -11.8°C. Humidity remains moderate throughout the year creating cold and damp conditions. These seasonal patterns make summer pleasant for travel, while winters can bring frost and occasional snowfall.
| Month | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | 🌤️ | 14.2°C | -4.4°C | 4.9°C | 55% | 5 | 1.2 | 3.50 |
| February | 🌤️ | 16.0°C | -3.6°C | 6.2°C | 52% | 12 | 1.4 | 3.80 |
| March | 🌤️ | 19.9°C | -0.1°C | 9.9°C | 49% | 28 | 1.6 | 4.40 |
| April | 🌤️ | 22.3°C | 3.5°C | 12.9°C | 54% | 56 | 1.7 | 4.90 |
| May | ⛅ | 23.5°C | 7.1°C | 15.3°C | 70% | 110 | 1.6 | 4.90 |
| June | 🌧️ | 23.8°C | 10.4°C | 17.1°C | 81% | 206 | 1.6 | 4.60 |
| July | 🌧️ | 22.7°C | 12.4°C | 17.5°C | 89% | 324 | 1.6 | 4.10 |
| August | 🌧️ | 22.3°C | 12.1°C | 17.2°C | 90% | 252 | 1.4 | 4.10 |
| September | 🌧️ | 21.2°C | 10.1°C | 15.7°C | 89% | 180 | 1.2 | 3.90 |
| October | 🌤️ | 19.7°C | 5.5°C | 12.6°C | 80% | 56 | 1.1 | 4.20 |
| November | 🌤️ | 17.0°C | 1.5°C | 9.3°C | 69% | 5 | 1.0 | 3.90 |
| December | 🌤️ | 14.9°C | -2.8°C | 6.1°C | 59% | 4 | 1.0 | 3.50 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 7 cities in Sikkim
🧥 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.
Region-wide monthly averages across 7 cities · 1981–2025 · °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.
Region-wide monthly rainfall · 1981–2025 · mm/month
Monthly averages · 1981–2025
💧 Humidity peaks at 90% in August · annual avg 70%
The warmest year on record was 2016 (avg: 12.9°C), while the coldest year was 1982 (avg: 11.3°C).
Averaged across all 7 cities in Sikkim · Last 10 years · °C
Averaged across all 7 cities in Sikkim · Last 10 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 7 cities in Sikkim for each year.
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 5.5°C | 12.6°C | 19.7°C | 1924 | 78% | 1.3 m/s |
2024 | 5.2°C | 12.4°C | 19.6°C | 2517 | 77% | 1.3 m/s |
2023 | 5.1°C | 12.4°C | 19.7°C | 1957 | 76% | 1.3 m/s |
2022 | 4.8°C | 11.8°C | 18.7°C | 2155 | 81% | 1.3 m/s |
2021 | 5.0°C | 12.2°C | 19.4°C | 2143 | 77% | 1.3 m/s |
2020 🌧️ | 4.4°C | 11.6°C | 18.8°C | 2525 | 79% | 1.3 m/s |
2019 | 4.0°C | 11.6°C | 19.1°C | 1733 | 76% | 1.4 m/s |
2018 | 4.5°C | 11.8°C | 19.0°C | 1575 | 74% | 1.3 m/s |
2017 | 5.1°C | 12.5°C | 19.9°C | 1591 | 75% | 1.4 m/s |
2016 | 5.9°C | 12.9°C | 19.8°C | 1738 | 73% | 1.4 m/s |
Showing 1 to 10 of 45 years
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.
