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Changsha, China climate
Cfa Humid subtropical
Changsha has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 93°F, while the coldest is January averaging around 37°F at night. Precipitation totals about 59 inches a year and is strongly seasonal — June alone averages 9.5 inches while December barely receives 2.16 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsChangsha climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 47 | 53 | 61 | 72 | 81 | 86 | 93 | 91 | 83 | 74 | 64 | 53 |
| Avg temp (°F) | 42 | 47 | 54 | 65 | 74 | 80 | 86 | 84 | 76 | 67 | 57 | 47 |
| Avg low (°F) | 37 | 41 | 48 | 58 | 67 | 73 | 79 | 77 | 70 | 60 | 50 | 40 |
| Precipitation (in) | 3.2 | 3.5 | 6.0 | 7.2 | 8.3 | 9.5 | 6.2 | 4.3 | 3.5 | 2.4 | 3.0 | 2.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 47 | 53 | 61 | 72 | 81 | 86 |
| Avg temp (°F) | 42 | 47 | 54 | 65 | 74 | 80 |
| Avg low (°F) | 37 | 41 | 48 | 58 | 67 | 73 |
| Precipitation (in) | 3.2 | 3.5 | 6.0 | 7.2 | 8.3 | 9.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 93 | 91 | 83 | 74 | 64 | 53 |
| Avg temp (°F) | 86 | 84 | 76 | 67 | 57 | 47 |
| Avg low (°F) | 79 | 77 | 70 | 60 | 50 | 40 |
| Precipitation (in) | 6.2 | 4.3 | 3.5 | 2.4 | 3.0 | 2.2 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 13 | 17 | 16 | 16 | 14 | 10 | 10 | 9 | 9 | 10 | 10 |
| Days with high ≥ 90°F (days) | — | — | 0.1 | 0.9 | 4 | 9 | 19 | 16 | 6 | 0.5 | — | — |
| Days with low ≤ 32°F (days) | 7 | 2 | 0.3 | — | — | — | — | — | — | — | 0.2 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 13 | 17 | 16 | 16 | 14 |
| Days with high ≥ 90°F (days) | — | — | 0.1 | 0.9 | 4 | 9 |
| Days with low ≤ 32°F (days) | 7 | 2 | 0.3 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 10 | 9 | 9 | 10 | 10 |
| Days with high ≥ 90°F (days) | 19 | 16 | 6 | 0.5 | — | — |
| Days with low ≤ 32°F (days) | — | — | — | — | 0.2 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 77 | 78 | 77 | 77 | 79 | 71 | 68 | 67 | 67 | 63 | 64 |
| Clear days (≤ 30% cloud) | 5 | 3 | 3 | 3 | 4 | 2 | 4 | 4 | 6 | 7 | 8 | 8 |
| Partly cloudy days (30–70%) | 5 | 6 | 6 | 6 | 5 | 6 | 8 | 10 | 7 | 6 | 6 | 6 |
| Cloudy days (≥ 70%) | 21 | 20 | 22 | 21 | 22 | 22 | 19 | 17 | 17 | 18 | 17 | 17 |
| Relative humidity (%) | 78 | 78 | 80 | 80 | 81 | 84 | 83 | 82 | 78 | 75 | 76 | 75 |
| Wind speed (mph) | 4.6 | 5.1 | 5.3 | 5.3 | 4.9 | 4.6 | 5.0 | 4.2 | 4.3 | 4.4 | 4.4 | 4.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 77 | 78 | 77 | 77 | 79 |
| Clear days (≤ 30% cloud) | 5 | 3 | 3 | 3 | 4 | 2 |
| Partly cloudy days (30–70%) | 5 | 6 | 6 | 6 | 5 | 6 |
| Cloudy days (≥ 70%) | 21 | 20 | 22 | 21 | 22 | 22 |
| Relative humidity (%) | 78 | 78 | 80 | 80 | 81 | 84 |
| Wind speed (mph) | 4.6 | 5.1 | 5.3 | 5.3 | 4.9 | 4.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 68 | 67 | 67 | 63 | 64 |
| Clear days (≤ 30% cloud) | 4 | 4 | 6 | 7 | 8 | 8 |
| Partly cloudy days (30–70%) | 8 | 10 | 7 | 6 | 6 | 6 |
| Cloudy days (≥ 70%) | 19 | 17 | 17 | 18 | 17 | 17 |
| Relative humidity (%) | 83 | 82 | 78 | 75 | 76 | 75 |
| Wind speed (mph) | 5.0 | 4.2 | 4.3 | 4.4 | 4.4 | 4.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 24 years of daily observations at Changsha, a weather station, about 11 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.