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Itanagar, India climate
Cwa Monsoon-influenced humid subtropical
Itanagar has a mildly seasonal warm-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around 9°C at night. Precipitation totals about 3394 mm a year and is strongly seasonal — June alone averages 614 mm while December barely receives 19 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Itanagar climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 26 | 28 | 28 | 31 | 32 | 32 | 32 | 32 | 31 | 29 | 26 |
| Avg temp (°C) | 17 | 19 | 22 | 23 | 26 | 28 | 28 | 28 | 28 | 26 | 22 | 18 |
| Avg low (°C) | 9 | 12 | 16 | 19 | 22 | 24 | 25 | 24 | 24 | 20 | 14 | 10 |
| Precipitation (mm) | 53 | 109 | 195 | 263 | 381 | 614 | 606 | 546 | 489 | 96 | 23 | 19 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 26 | 28 | 28 | 31 | 32 |
| Avg temp (°C) | 17 | 19 | 22 | 23 | 26 | 28 |
| Avg low (°C) | 9 | 12 | 16 | 19 | 22 | 24 |
| Precipitation (mm) | 53 | 109 | 195 | 263 | 381 | 614 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 32 | 32 | 31 | 29 | 26 |
| Avg temp (°C) | 28 | 28 | 28 | 26 | 22 | 18 |
| Avg low (°C) | 25 | 24 | 24 | 20 | 14 | 10 |
| Precipitation (mm) | 606 | 546 | 489 | 96 | 23 | 19 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 6 | 7 | 11 | 13 | 15 | 17 | 15 | 13 | 7 | 3 | 2 |
| Days with high ≥ 32°C (days) | — | 0.3 | 3 | 4 | 8 | 7 | 10 | 11 | 11 | 11 | 2 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 6 | 7 | 11 | 13 | 15 |
| Days with high ≥ 32°C (days) | — | 0.3 | 3 | 4 | 8 | 7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 17 | 15 | 13 | 7 | 3 | 2 |
| Days with high ≥ 32°C (days) | 10 | 11 | 11 | 11 | 2 | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 45 | 60 | 72 | 81 | 82 | 82 | 83 | 82 | 74 | 56 | 42 | 37 |
| Relative humidity (%) | 68 | 63 | 58 | 62 | 69 | 78 | 83 | 82 | 82 | 79 | 76 | 72 |
| Wind speed (mph) | 1.8 | 1.9 | 2.3 | 2.7 | 2.6 | 2.7 | 2.8 | 2.3 | 2.2 | 2.1 | 2.0 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 45 | 60 | 72 | 81 | 82 | 82 |
| Relative humidity (%) | 68 | 63 | 58 | 62 | 69 | 78 |
| Wind speed (mph) | 1.8 | 1.9 | 2.3 | 2.7 | 2.6 | 2.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 83 | 82 | 74 | 56 | 42 | 37 |
| Relative humidity (%) | 83 | 82 | 82 | 79 | 76 | 72 |
| Wind speed (mph) | 2.8 | 2.3 | 2.2 | 2.1 | 2.0 | 1.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 17 years of daily observations at North Lakhimpur, a weather station, about 53 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.