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Shiyan, China climate
Cwa Monsoon-influenced humid subtropical
Shiyan has a strongly seasonal mild-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is July with an average daily high near 32°C, while the coldest is January averaging around −2°C at night. Precipitation totals about 898 mm a year and is strongly seasonal — July alone averages 199 mm while December barely receives 12 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)Shiyan climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 10 | 15 | 22 | 27 | 31 | 32 | 31 | 27 | 22 | 15 | 9 |
| Avg temp (°C) | 2 | 5 | 10 | 16 | 21 | 26 | 28 | 27 | 22 | 17 | 10 | 4 |
| Avg low (°C) | −2 | 0 | 5 | 11 | 16 | 21 | 23 | 22 | 18 | 12 | 5 | −1 |
| Precipitation (mm) | 13 | 18 | 36 | 60 | 91 | 140 | 199 | 148 | 86 | 56 | 39 | 12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 10 | 15 | 22 | 27 | 31 |
| Avg temp (°C) | 2 | 5 | 10 | 16 | 21 | 26 |
| Avg low (°C) | −2 | 0 | 5 | 11 | 16 | 21 |
| Precipitation (mm) | 13 | 18 | 36 | 60 | 91 | 140 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 27 | 22 | 15 | 9 |
| Avg temp (°C) | 28 | 27 | 22 | 17 | 10 | 4 |
| Avg low (°C) | 23 | 22 | 18 | 12 | 5 | −1 |
| Precipitation (mm) | 199 | 148 | 86 | 56 | 39 | 12 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 54 | 62 | 66 | 67 | 71 | 72 | 73 | 66 | 66 | 62 | 54 | 50 |
| Relative humidity (%) | 65 | 64 | 63 | 60 | 60 | 64 | 73 | 73 | 70 | 66 | 67 | 65 |
| Wind speed (m/s) | 1.9 | 2.1 | 2.3 | 2.3 | 2.1 | 1.9 | 1.9 | 1.9 | 1.8 | 1.8 | 1.9 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 54 | 62 | 66 | 67 | 71 | 72 |
| Relative humidity (%) | 65 | 64 | 63 | 60 | 60 | 64 |
| Wind speed (m/s) | 1.9 | 2.1 | 2.3 | 2.3 | 2.1 | 1.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 66 | 66 | 62 | 54 | 50 |
| Relative humidity (%) | 73 | 73 | 70 | 66 | 67 | 65 |
| Wind speed (m/s) | 1.9 | 1.9 | 1.8 | 1.8 | 1.9 | 1.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Nanyang, a weather station, about 167 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.