Arunachal Pradesh has a warm temperate climate with warm summers and mild winters.
Arunachal Pradesh has an average annual temperature of 17.4°C across all 16 cities, with approximately 1951 mm of annual precipitation and average humidity of 76%. Temperatures peak in August and drop to their lowest in January, while rainfall is highest during summer months.
The warmest city is Lower Dibang Valley with average July highs of 38.5°C, while Dibang Valley is the coldest with average January lows of -8.6°C. Humidity remains high throughout the year creating warm and humid conditions. These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
| Month | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | 🌤️ | 18.9°C | 1.3°C | 10.1°C | 71% | 15 | 0.7 | 3.20 |
| February | 🌤️ | 20.4°C | 2.4°C | 11.4°C | 70% | 35 | 0.7 | 3.40 |
| March | 🌤️ | 24.3°C | 4.8°C | 14.6°C | 68% | 67 | 0.8 | 3.60 |
| April | 🌧️ | 26.6°C | 8.3°C | 17.4°C | 71% | 158 | 0.8 | 3.80 |
| May | 🌧️ | 28.9°C | 11.5°C | 20.2°C | 75% | 216 | 0.7 | 4.10 |
| June | 🌧️ | 29.7°C | 15.1°C | 22.4°C | 81% | 342 | 0.6 | 4.00 |
| July | 🌧️ | 29.8°C | 16.8°C | 23.3°C | 84% | 403 | 0.6 | 4.00 |
| August | 🌧️ | 29.9°C | 16.6°C | 23.3°C | 83% | 320 | 0.5 | 4.00 |
| September | 🌧️ | 28.8°C | 14.5°C | 21.6°C | 84% | 265 | 0.5 | 3.80 |
| October | ⛅ | 26.5°C | 9.4°C | 18.0°C | 80% | 107 | 0.5 | 3.90 |
| November | 🌤️ | 23.3°C | 5.8°C | 14.6°C | 75% | 14 | 0.6 | 3.80 |
| December | 🌤️ | 20.3°C | 2.7°C | 11.5°C | 72% | 10 | 0.6 | 3.40 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 16 cities in Arunachal Pradesh
🧥 Light layers are sufficient — this Mild Winter stays cool without prolonged hard freezes.
🌤️ 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 16 cities · 1981–2025 · °C
Temperatures rise steadily from spring, peak in August, 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
Monthly averages · 1981–2025
💧 Humidity peaks at 84% in July · annual avg 76%
The warmest year on record was 2025 (avg: 18.1°C), while the coldest year was 1997 (avg: 16.4°C).
Averaged across all 16 cities in Arunachal Pradesh · Last 10 years · °C
Averaged across all 16 cities in Arunachal Pradesh · Last 10 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 16 cities in Arunachal Pradesh for each year.
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 10.4°C | 18.1°C | 25.7°C | 2183 | 80% | 0.6 m/s |
2024 | 9.8°C | 17.8°C | 25.8°C | 2369 | 78% | 0.6 m/s |
2023 | 9.8°C | 18.0°C | 26.2°C | 2093 | 78% | 0.6 m/s |
2022 | 9.4°C | 17.3°C | 25.2°C | 2771 | 80% | 0.6 m/s |
2021 | 9.9°C | 17.9°C | 25.9°C | 2035 | 79% | 0.6 m/s |
2020 🌧️ | 9.8°C | 17.6°C | 25.3°C | 3107 | 81% | 0.6 m/s |
2019 | 9.6°C | 17.6°C | 25.6°C | 2297 | 80% | 0.6 m/s |
2018 | 9.9°C | 17.6°C | 25.2°C | 1992 | 80% | 0.6 m/s |
2017 | 10.1°C | 18.1°C | 26.0°C | 2563 | 80% | 0.6 m/s |
2016 | 10.5°C | 18.1°C | 25.7°C | 2226 | 81% | 0.6 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.
