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Cao Bằng, Vietnam climate
Cwa Monsoon-influenced humid subtropical
Cao Bằng has a mildly seasonal warm-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is July with an average daily high near 91°F, while the coldest is January averaging around 52°F at night. Precipitation totals about 54 inches a year and is strongly seasonal — June alone averages 9.6 inches while February barely receives 0.81 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)Cao Bằng climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 65 | 69 | 74 | 83 | 88 | 90 | 91 | 90 | 89 | 84 | 77 | 69 |
| Avg temp (°F) | 58 | 62 | 67 | 75 | 80 | 83 | 83 | 83 | 80 | 75 | 68 | 61 |
| Avg low (°F) | 52 | 55 | 61 | 67 | 72 | 75 | 76 | 75 | 72 | 67 | 60 | 53 |
| Precipitation (in) | 1.7 | 0.8 | 2.5 | 2.8 | 7.9 | 9.6 | 9.4 | 9.1 | 5.3 | 2.6 | 1.5 | 1.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 65 | 69 | 74 | 83 | 88 | 90 |
| Avg temp (°F) | 58 | 62 | 67 | 75 | 80 | 83 |
| Avg low (°F) | 52 | 55 | 61 | 67 | 72 | 75 |
| Precipitation (in) | 1.7 | 0.8 | 2.5 | 2.8 | 7.9 | 9.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 91 | 90 | 89 | 84 | 77 | 69 |
| Avg temp (°F) | 83 | 83 | 80 | 75 | 68 | 61 |
| Avg low (°F) | 76 | 75 | 72 | 67 | 60 | 53 |
| Precipitation (in) | 9.4 | 9.1 | 5.3 | 2.6 | 1.5 | 1.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 77 | 79 | 79 | 79 | 87 | 84 | 79 | 68 | 64 | 61 | 64 |
| Relative humidity (%) | 79 | 78 | 78 | 77 | 80 | 86 | 87 | 86 | 84 | 82 | 79 | 77 |
| Wind speed (mph) | 5.1 | 5.5 | 5.6 | 5.5 | 4.8 | 4.2 | 4.2 | 3.7 | 4.1 | 4.5 | 4.5 | 4.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 77 | 79 | 79 | 79 | 87 |
| Relative humidity (%) | 79 | 78 | 78 | 77 | 80 | 86 |
| Wind speed (mph) | 5.1 | 5.5 | 5.6 | 5.5 | 4.8 | 4.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 84 | 79 | 68 | 64 | 61 | 64 |
| Relative humidity (%) | 87 | 86 | 84 | 82 | 79 | 77 |
| Wind speed (mph) | 4.2 | 3.7 | 4.1 | 4.5 | 4.5 | 4.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Cao Bang, a weather station, inside the city. 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.