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Lào Cai, Vietnam climate
Cwa Monsoon-influenced humid subtropical
Lào Cai has a mildly seasonal tropical climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is June with an average daily high near 92°F, while the coldest is January averaging around 58°F at night. Precipitation totals about 63 inches a year and is strongly seasonal — August alone averages 12.8 inches while February barely receives 1.02 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)Lào Cai climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 69 | 72 | 78 | 85 | 90 | 92 | 91 | 91 | 89 | 84 | 79 | 71 |
| Avg temp (°F) | 63 | 66 | 71 | 78 | 82 | 85 | 85 | 84 | 82 | 78 | 72 | 65 |
| Avg low (°F) | 58 | 60 | 65 | 71 | 75 | 78 | 78 | 77 | 75 | 71 | 65 | 59 |
| Precipitation (in) | 1.3 | 1.0 | 2.5 | 4.6 | 7.0 | 7.6 | 10.7 | 12.8 | 7.8 | 4.0 | 2.1 | 1.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 69 | 72 | 78 | 85 | 90 | 92 |
| Avg temp (°F) | 63 | 66 | 71 | 78 | 82 | 85 |
| Avg low (°F) | 58 | 60 | 65 | 71 | 75 | 78 |
| Precipitation (in) | 1.3 | 1.0 | 2.5 | 4.6 | 7.0 | 7.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 91 | 91 | 89 | 84 | 79 | 71 |
| Avg temp (°F) | 85 | 84 | 82 | 78 | 72 | 65 |
| Avg low (°F) | 78 | 77 | 75 | 71 | 65 | 59 |
| Precipitation (in) | 10.7 | 12.8 | 7.8 | 4.0 | 2.1 | 1.3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 57 | 58 | 65 | 76 | 89 | 89 | 84 | 73 | 69 | 57 | 61 |
| Relative humidity (%) | 81 | 76 | 73 | 73 | 75 | 80 | 82 | 82 | 81 | 82 | 81 | 81 |
| Wind speed (mph) | 1.7 | 1.9 | 2.0 | 2.0 | 1.8 | 1.7 | 1.6 | 1.5 | 1.5 | 1.6 | 1.6 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 57 | 58 | 65 | 76 | 89 |
| Relative humidity (%) | 81 | 76 | 73 | 73 | 75 | 80 |
| Wind speed (mph) | 1.7 | 1.9 | 2.0 | 2.0 | 1.8 | 1.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 89 | 84 | 73 | 69 | 57 | 61 |
| Relative humidity (%) | 82 | 82 | 81 | 82 | 81 | 81 |
| Wind speed (mph) | 1.6 | 1.5 | 1.5 | 1.6 | 1.6 | 1.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Lao Cai, a weather station, about 2 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.