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Biratnagar, Nepal climate
Cwa Monsoon-influenced humid subtropical
Biratnagar has a mildly seasonal tropical climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is May with an average daily high near 98°F, while the coldest is January averaging around 51°F at night. Precipitation totals about 67 inches a year and is strongly seasonal — July alone averages 16.8 inches while November barely receives 0.18 inches.
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)Biratnagar climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 75 | 82 | 91 | 97 | 98 | 95 | 89 | 88 | 86 | 85 | 81 | 76 |
| Avg temp (°F) | 63 | 69 | 78 | 84 | 87 | 87 | 83 | 82 | 80 | 77 | 71 | 65 |
| Avg low (°F) | 51 | 56 | 64 | 71 | 76 | 79 | 77 | 77 | 75 | 69 | 61 | 54 |
| Precipitation (in) | 0.4 | 0.5 | 0.5 | 1.5 | 5.1 | 12.8 | 16.8 | 14.2 | 11.2 | 3.2 | 0.2 | 0.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 75 | 82 | 91 | 97 | 98 | 95 |
| Avg temp (°F) | 63 | 69 | 78 | 84 | 87 | 87 |
| Avg low (°F) | 51 | 56 | 64 | 71 | 76 | 79 |
| Precipitation (in) | 0.4 | 0.5 | 0.5 | 1.5 | 5.1 | 12.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 89 | 88 | 86 | 85 | 81 | 76 |
| Avg temp (°F) | 83 | 82 | 80 | 77 | 71 | 65 |
| Avg low (°F) | 77 | 77 | 75 | 69 | 61 | 54 |
| Precipitation (in) | 16.8 | 14.2 | 11.2 | 3.2 | 0.2 | 0.2 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | — | 1 | 19 | 28 | 29 | 24 | 9 | 6 | 3 | 3 | 0.5 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | — | 1 | 19 | 28 | 29 | 24 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 9 | 6 | 3 | 3 | 0.5 | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 32 | 35 | 38 | 45 | 55 | 72 | 83 | 81 | 69 | 38 | 23 | 24 |
| Relative humidity (%) | 45 | 36 | 29 | 34 | 50 | 66 | 83 | 85 | 84 | 73 | 60 | 52 |
| Wind speed (mph) | 3.1 | 3.9 | 4.7 | 4.6 | 4.3 | 4.7 | 4.5 | 4.0 | 3.6 | 2.6 | 2.5 | 2.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 32 | 35 | 38 | 45 | 55 | 72 |
| Relative humidity (%) | 45 | 36 | 29 | 34 | 50 | 66 |
| Wind speed (mph) | 3.1 | 3.9 | 4.7 | 4.6 | 4.3 | 4.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 83 | 81 | 69 | 38 | 23 | 24 |
| Relative humidity (%) | 83 | 85 | 84 | 73 | 60 | 52 |
| Wind speed (mph) | 4.5 | 4.0 | 3.6 | 2.6 | 2.5 | 2.6 |
Methodology & sources
Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
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.