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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 33°C, while the coldest is January averaging around 11°C at night. Precipitation totals about 1378 mm a year and is strongly seasonal — June alone averages 243 mm while February barely receives 20 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)Cao Bằng climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 18 | 21 | 23 | 28 | 31 | 32 | 33 | 32 | 31 | 29 | 25 | 21 |
| Avg temp (°C) | 15 | 17 | 20 | 24 | 27 | 28 | 28 | 28 | 27 | 24 | 20 | 16 |
| Avg low (°C) | 11 | 13 | 16 | 20 | 22 | 24 | 24 | 24 | 22 | 19 | 15 | 11 |
| Precipitation (mm) | 43 | 20 | 64 | 70 | 200 | 243 | 239 | 230 | 135 | 65 | 39 | 30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 18 | 21 | 23 | 28 | 31 | 32 |
| Avg temp (°C) | 15 | 17 | 20 | 24 | 27 | 28 |
| Avg low (°C) | 11 | 13 | 16 | 20 | 22 | 24 |
| Precipitation (mm) | 43 | 20 | 64 | 70 | 200 | 243 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 32 | 31 | 29 | 25 | 21 |
| Avg temp (°C) | 28 | 28 | 27 | 24 | 20 | 16 |
| Avg low (°C) | 24 | 24 | 22 | 19 | 15 | 11 |
| Precipitation (mm) | 239 | 230 | 135 | 65 | 39 | 30 |
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 (km/h) | 8.2 | 8.8 | 9.0 | 8.9 | 7.8 | 6.8 | 6.7 | 5.9 | 6.6 | 7.3 | 7.3 | 7.9 |
| 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 (km/h) | 8.2 | 8.8 | 9.0 | 8.9 | 7.8 | 6.8 |
| 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 (km/h) | 6.7 | 5.9 | 6.6 | 7.3 | 7.3 | 7.9 |
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.