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Huai'an, China climate
Cwa Monsoon-influenced humid subtropical
Huai'an has a strongly seasonal mild-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is July with an average daily high near 30°C, while the coldest is January averaging around −3°C at night. Precipitation totals about 937 mm a year and is strongly seasonal — July alone averages 245 mm while January barely receives 17 mm.
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 countsHuai'an climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 7 | 13 | 19 | 25 | 28 | 30 | 29 | 26 | 21 | 14 | 7 |
| Avg temp (°C) | 1 | 3 | 8 | 14 | 20 | 24 | 27 | 26 | 22 | 17 | 10 | 3 |
| Avg low (°C) | −3 | −1 | 3 | 9 | 15 | 20 | 24 | 23 | 18 | 12 | 5 | −1 |
| Precipitation (mm) | 17 | 23 | 34 | 45 | 73 | 108 | 245 | 228 | 88 | 28 | 31 | 19 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 7 | 13 | 19 | 25 | 28 |
| Avg temp (°C) | 1 | 3 | 8 | 14 | 20 | 24 |
| Avg low (°C) | −3 | −1 | 3 | 9 | 15 | 20 |
| Precipitation (mm) | 17 | 23 | 34 | 45 | 73 | 108 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 29 | 26 | 21 | 14 | 7 |
| Avg temp (°C) | 27 | 26 | 22 | 17 | 10 | 3 |
| Avg low (°C) | 24 | 23 | 18 | 12 | 5 | −1 |
| Precipitation (mm) | 245 | 228 | 88 | 28 | 31 | 19 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 5 | 5 | 6 | 8 | 7 | 13 | 12 | 8 | 5 | 5 | 4 |
| Days with high ≥ 32°C (days) | — | — | — | 0.0 | 1 | 3 | 7 | 4 | 0.6 | — | — | — |
| Days with low ≤ 0°C (days) | 25 | 17 | 6 | 0.2 | — | — | — | — | — | — | 4 | 20 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 5 | 5 | 6 | 8 | 7 |
| Days with high ≥ 32°C (days) | — | — | — | 0.0 | 1 | 3 |
| Days with low ≤ 0°C (days) | 25 | 17 | 6 | 0.2 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 12 | 8 | 5 | 5 | 4 |
| Days with high ≥ 32°C (days) | 7 | 4 | 0.6 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | — | 4 | 20 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 52 | 55 | 58 | 60 | 65 | 70 | 70 | 64 | 59 | 53 | 50 | 48 |
| Clear days (≤ 30% cloud) | 9 | 8 | 7 | 6 | 5 | 3 | 3 | 5 | 7 | 10 | 11 | 12 |
| Partly cloudy days (30–70%) | 12 | 9 | 11 | 10 | 10 | 10 | 10 | 11 | 10 | 10 | 9 | 10 |
| Cloudy days (≥ 70%) | 10 | 11 | 13 | 13 | 16 | 17 | 18 | 15 | 13 | 11 | 10 | 10 |
| Relative humidity (%) | 69 | 71 | 71 | 69 | 70 | 76 | 83 | 82 | 75 | 70 | 71 | 71 |
| Wind speed (m/s) | 3.6 | 3.5 | 3.6 | 3.5 | 3.3 | 3.1 | 3.0 | 3.2 | 3.2 | 3.4 | 3.8 | 3.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 52 | 55 | 58 | 60 | 65 | 70 |
| Clear days (≤ 30% cloud) | 9 | 8 | 7 | 6 | 5 | 3 |
| Partly cloudy days (30–70%) | 12 | 9 | 11 | 10 | 10 | 10 |
| Cloudy days (≥ 70%) | 10 | 11 | 13 | 13 | 16 | 17 |
| Relative humidity (%) | 69 | 71 | 71 | 69 | 70 | 76 |
| Wind speed (m/s) | 3.6 | 3.5 | 3.6 | 3.5 | 3.3 | 3.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 64 | 59 | 53 | 50 | 48 |
| Clear days (≤ 30% cloud) | 3 | 5 | 7 | 10 | 11 | 12 |
| Partly cloudy days (30–70%) | 10 | 11 | 10 | 10 | 9 | 10 |
| Cloudy days (≥ 70%) | 18 | 15 | 13 | 11 | 10 | 10 |
| Relative humidity (%) | 83 | 82 | 75 | 70 | 71 | 71 |
| Wind speed (m/s) | 3.0 | 3.2 | 3.2 | 3.4 | 3.8 | 3.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Ganyu, a weather station, about 141 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.