Yancheng climate
Yancheng (Jiangsu, China) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 15 °C59 °F, and about 1,028 mm40 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Yancheng climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 642 | −426 | 134 | 311.2 | 26 |
| Feb | 948 | −229 | 338 | 381.5 | 19 |
| Mar | 1558 | 235 | 846 | 441.7 | 10 |
| Apr | 2170 | 745 | 1458 | 522.1 | 1 |
| May | 2781 | 1457 | 2069 | 763.0 | 0 |
| Jun | 3087 | 1965 | 2476 | 1335.3 | 0 |
| Jul | 3188 | 2374 | 2781 | 2409.4 | 0 |
| Aug | 3187 | 2373 | 2780 | 1807.1 | 0 |
| Sep | 2781 | 1864 | 2272 | 943.7 | 0 |
| Oct | 2272 | 1152 | 1762 | 512.0 | 0 |
| Nov | 1560 | 540 | 1050 | 562.2 | 4 |
| Dec | 846 | −229 | 337 | 321.2 | 20 |
| Year | 3188 | −426 | 1559 | 1,02840 | 79 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 76% | 71% | 2.3 | 10:10 |
| Feb | 76% | 70% | 2.8 | 10:57 |
| Mar | 73% | 62% | 4.0 | 11:53 |
| Apr | 69% | 63% | 4.8 | 12:58 |
| May | 67% | 68% | 5.0 | 13:52 |
| Jun | 72% | 73% | 4.6 | 14:21 |
| Jul | 83% | 73% | 4.6 | 14:09 |
| Aug | 83% | 66% | 4.7 | 13:23 |
| Sep | 80% | 65% | 4.1 | 12:20 |
| Oct | 75% | 60% | 3.3 | 11:17 |
| Nov | 76% | 64% | 2.5 | 10:23 |
| Dec | 75% | 70% | 2.1 | 9:57 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Yancheng is like
The warmest month is July, with an average high of 31 °C88 °F and a low of 23 °C74 °F. The coldest is January, when highs average 6 °C42 °F and lows −4 °C26 °F. Seasons are strongly marked: the warmest month is on average 26.1 °C46.9 °F warmer than the coldest.
It is wet, with about 1,028 mm40 in of precipitation per year. The wettest three-month stretch is June–August, which brings 54% of the annual total. The wettest month is July (240 mm9.4 in), the driest is January (31 mm1.2 in).
Relative humidity ranges from 67% in May to 83% in August. The clearest skies (lowest average cloud amount, 60%) are typical of October. Average wind speed near the ground ranges from 8 km/h (5 mph) in October to 10 km/h (7 mph) in April. Daylight lasts from about 10.0 hours in December to 14.3 hours in June.
Best time to visit Yancheng
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April and May and October: average highs of 21 °C70 °F to 27 °C81 °F with 51 mm2.0 in to 76 mm3.0 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 6 °C42 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
Yancheng weather by month
- January6 °C42 °F / −4 °C26 °F
- February9 °C48 °F / −2 °C29 °F
- March15 °C58 °F / 2 °C35 °F
- April21 °C70 °F / 7 °C45 °F
- May27 °C81 °F / 14 °C57 °F
- June30 °C87 °F / 19 °C65 °F
- July31 °C88 °F / 23 °C74 °F
- August31 °C87 °F / 23 °C73 °F
- September27 °C81 °F / 18 °C64 °F
- October22 °C72 °F / 11 °C52 °F
- November15 °C60 °F / 5 °C40 °F
- December8 °C46 °F / −2 °C29 °F
What to pack for Yancheng
- Winter (December–February) — highs 642 to 9 °C48 °F, lows −426 to −2 °C29 °F, about 34 mm1.3 in of precipitation a month. Pack a warm coat, layers and closed shoes and shoes with good grip, as frost is common.
- Spring (March–May) — highs 1558 to 27 °C81 °F, lows 235 to 14 °C57 °F, about 57 mm2.3 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3087 to 31 °C88 °F, lows 1965 to 23 °C74 °F, about 184 mm7.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1560 to 27 °C81 °F, lows 540 to 18 °C64 °F, about 67 mm2.6 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
How Yancheng compares
Compared with Huaian, about 109 km to the west, Yancheng is on average 0.4 °C0.7 °F cooler and receives a similar amount of precipitation. The difference is largest in April (1 °C1.8 °F cooler).
Of the 547 places in China covered by World Climates, Yancheng is the 308th warmest by annual mean temperature and the 247th wettest by annual precipitation. See all of them on the China climate page.
Places in other countries with the most similar temperature and rainfall pattern: Pohang (South Korea, Cfa), Gyeongju (South Korea, Cfa) and Wichita (United States, Cfa).
Nearby places
- Xinghua 55 km · 15 °C59 °F · 1,057 mm42 in
- Dongtai 58 km · 15 °C59 °F · 1,057 mm42 in
- Taizhou 99 km · 16 °C60 °F · 1,101 mm43 in
- Huaian 109 km · 15 °C59 °F · 987 mm39 in
- Rugao 117 km · 15 °C60 °F · 1,113 mm44 in
- Yangzhou 126 km · 16 °C60 °F · 1,116 mm44 in
- Zhenjiang 143 km · 16 °C61 °F · 1,179 mm46 in
- Jiangyin 161 km · 16 °C61 °F · 1,145 mm45 in
Frequently asked questions
What is the warmest month in Yancheng?
July is the warmest month in Yancheng, with an average high of 31 °C (88 °F) and an average low of 23 °C (74 °F).
What is the coldest month in Yancheng?
January is the coldest month, with an average high of 6 °C (42 °F) and an average low of -4 °C (26 °F).
When does it rain the most in Yancheng?
July is the wettest month with about 240 mm (9.4 in) of precipitation; January is the driest with about 31 mm (1.2 in).
What is the best time to visit Yancheng?
Judging by long-term averages, the most comfortable months are April and May and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.