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Haiphong, Vietnam climate
Cwa Monsoon-influenced humid subtropical
Haiphong has a mildly seasonal tropical climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is June with an average daily high near 90°F, while the coldest is January averaging around 58°F at night. Precipitation totals about 58 inches a year and is strongly seasonal — August alone averages 12.9 inches while February barely receives 0.82 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)Haiphong climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 68 | 70 | 73 | 80 | 87 | 90 | 90 | 89 | 88 | 85 | 79 | 72 |
| Avg temp (°F) | 63 | 65 | 69 | 75 | 81 | 84 | 84 | 83 | 82 | 78 | 73 | 66 |
| Avg low (°F) | 58 | 60 | 64 | 70 | 75 | 79 | 79 | 78 | 76 | 72 | 66 | 60 |
| Precipitation (in) | 1.5 | 0.8 | 2.1 | 2.5 | 7.1 | 7.0 | 9.2 | 12.9 | 8.6 | 3.1 | 1.8 | 1.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 68 | 70 | 73 | 80 | 87 | 90 |
| Avg temp (°F) | 63 | 65 | 69 | 75 | 81 | 84 |
| Avg low (°F) | 58 | 60 | 64 | 70 | 75 | 79 |
| Precipitation (in) | 1.5 | 0.8 | 2.1 | 2.5 | 7.1 | 7.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 90 | 89 | 88 | 85 | 79 | 72 |
| Avg temp (°F) | 84 | 83 | 82 | 78 | 73 | 66 |
| Avg low (°F) | 79 | 78 | 76 | 72 | 66 | 60 |
| Precipitation (in) | 9.2 | 12.9 | 8.6 | 3.1 | 1.8 | 1.1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 76 | 79 | 77 | 74 | 82 | 81 | 80 | 71 | 59 | 59 | 66 |
| Relative humidity (%) | 79 | 81 | 82 | 82 | 83 | 86 | 87 | 86 | 83 | 80 | 78 | 76 |
| Wind speed (mph) | 6.0 | 5.9 | 5.7 | 5.3 | 5.1 | 5.1 | 5.1 | 4.3 | 4.7 | 5.5 | 5.5 | 6.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 76 | 79 | 77 | 74 | 82 |
| Relative humidity (%) | 79 | 81 | 82 | 82 | 83 | 86 |
| Wind speed (mph) | 6.0 | 5.9 | 5.7 | 5.3 | 5.1 | 5.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 80 | 71 | 59 | 59 | 66 |
| Relative humidity (%) | 87 | 86 | 83 | 80 | 78 | 76 |
| Wind speed (mph) | 5.1 | 4.3 | 4.7 | 5.5 | 5.5 | 6.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Phu Lien, a weather station, about 9 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.