Assam has a warm subtropical climate with warm summers and mild winters.
Assam has an average annual temperature of 24.3°C across all 23 cities, with approximately 1925 mm of annual precipitation and average humidity of 73%. Temperatures peak in May and drop to their lowest in January, while rainfall is highest during summer months.
The warmest city is Tinsukia with average July highs of 34.2°C, while Kamrup is the coldest with average January lows of 8.9°C. Humidity remains moderate throughout the year, especially in autumn, creating warm and humid conditions. These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
| Month | 🌤️ | Avg High | Avg Temp | Avg Low | Record High | Record Low | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|---|---|
| January | ☀️ | 22.6°C | 16.6°C | 10.5°C | 32.0°C | 1.8°C | 69% | 11 | 0.9 | 3.70 |
| February | ☀️ | 25.6°C | 19.0°C | 12.4°C | 35.4°C | 3.6°C | 62% | 27 | 1.0 | 4.20 |
| March | 😎 | 30.2°C | 23.3°C | 16.5°C | 40.7°C | 7.8°C | 56% | 58 | 1.1 | 4.80 |
| April | 🌧️ | 32.6°C | 26.6°C | 20.5°C | 43.1°C | 11.4°C | 62% | 172 | 1.2 | 5.00 |
| May | 🌧️ | 33.0°C | 28.1°C | 23.2°C | 42.9°C | 14.4°C | 70% | 255 | 1.1 | 4.90 |
| June | 🌧️ | 32.8°C | 29.0°C | 25.1°C | 44.9°C | 18.4°C | 79% | 346 | 1.1 | 4.50 |
| July | 🌧️ | 32.0°C | 28.7°C | 25.3°C | 42.7°C | 20.3°C | 83% | 365 | 1.1 | 4.40 |
| August | 🌧️ | 32.0°C | 28.7°C | 25.3°C | 45.6°C | 20.3°C | 83% | 302 | 1.0 | 4.50 |
| September | 🌧️ | 31.0°C | 27.6°C | 24.2°C | 43.0°C | 16.7°C | 83% | 245 | 0.9 | 4.30 |
| October | ⛅ | 29.2°C | 25.0°C | 20.9°C | 41.1°C | 12.8°C | 81% | 119 | 0.9 | 4.30 |
| November | ☀️ | 26.2°C | 21.1°C | 16.1°C | 35.9°C | 8.3°C | 77% | 15 | 0.9 | 4.20 |
| December | ☀️ | 23.3°C | 17.7°C | 12.1°C | 31.7°C | 4.5°C | 74% | 11 | 0.9 | 3.70 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 23 cities in Assam
🧥 Light layers are sufficient — this Mild Winter stays cool without prolonged hard freezes.
🌤️ Early mornings and evenings are most comfortable during this Hot Summer season.
☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.
Region-wide monthly averages across 23 cities · 1981–2025 · °C
Temperatures rise steadily from spring, peak in May, and gradually decline through autumn into winter.
These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
Region-wide monthly rainfall · 1981–2025 · mm/month
💧 Humidity peaks at 83% in September · annual avg 73%
Monthly averages · 1981–2025
Across 45 years, Assam's temperature has remained relatively stable over the past decade. 2016 was the warmest year overall and 2004 the coolest.
The warmest year on record was 2016 (avg: 25.1°C), while the coldest year was 2004 (avg: 23.7°C).
Averaged across all 23 cities in Assam · Last 30 years · °C
Averaged across all 23 cities in Assam · Last 30 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 23 cities in Assam for each year.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|---|---|
2025 | 29.0°C | 24.5°C | 20.0°C | 41.0°C | 7.3°C | 2190 | 77% | 1.0 m/s |
2024 | 29.4°C | 24.7°C | 19.9°C | 42.1°C | 6.5°C | 2377 | 74% | 1.0 m/s |
2023 | 29.8°C | 24.9°C | 20.0°C | 43.0°C | 6.0°C | 1947 | 74% | 1.0 m/s |
2022 | 28.7°C | 24.2°C | 19.6°C | 41.4°C | 5.5°C | 2505 | 78% | 1.1 m/s |
2021 | 29.3°C | 24.6°C | 19.9°C | 40.6°C | 5.9°C | 1848 | 76% | 1.0 m/s |
2020 🌧️ | 28.6°C | 24.3°C | 19.9°C | 39.9°C | 5.8°C | 2729 | 79% | 1.0 m/s |
2019 | 29.0°C | 24.5°C | 19.9°C | 43.3°C | 6.3°C | 2489 | 77% | 1.0 m/s |
2018 | 28.8°C | 24.4°C | 19.9°C | 40.8°C | 5.1°C | 2049 | 78% | 1.0 m/s |
2017 | 29.2°C | 24.8°C | 20.4°C | 41.1°C | 6.5°C | 2714 | 78% | 1.1 m/s |
2016 | 29.5°C | 25.1°C | 20.7°C | 40.8°C | 6.6°C | 2296 | 78% | 1.0 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.
