Jianchang climate
Jianchang (Jiangxi, China) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 19 °C67 °F, and about 1,882 mm74 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Jianchang climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1355 | 236 | 846 | 793.1 |
| Feb | 1661 | 541 | 1151 | 1044.1 |
| Mar | 2068 | 948 | 1458 | 2038.0 |
| Apr | 2577 | 1458 | 2067 | 2248.8 |
| May | 2883 | 1966 | 2475 | 28411 |
| Jun | 3087 | 2373 | 2780 | 35414 |
| Jul | 3391 | 2577 | 2984 | 1766.9 |
| Aug | 3391 | 2476 | 2984 | 1395.5 |
| Sep | 3087 | 2170 | 2678 | 953.8 |
| Oct | 2679 | 1559 | 2169 | 532.1 |
| Nov | 2170 | 1050 | 1560 | 1044.1 |
| Dec | 1558 | 338 | 948 | 662.6 |
| Year | 3391 | 236 | 1967 | 1,88274 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 81% | 73% | 2.0 | 10:34 |
| Feb | 82% | 75% | 2.4 | 11:11 |
| Mar | 82% | 78% | 2.9 | 11:56 |
| Apr | 82% | 78% | 3.6 | 12:47 |
| May | 83% | 80% | 4.0 | 13:30 |
| Jun | 86% | 83% | 4.2 | 13:52 |
| Jul | 83% | 71% | 5.5 | 13:43 |
| Aug | 83% | 68% | 5.0 | 13:07 |
| Sep | 82% | 63% | 4.1 | 12:17 |
| Oct | 78% | 56% | 3.5 | 11:27 |
| Nov | 80% | 61% | 2.7 | 10:45 |
| Dec | 78% | 60% | 2.4 | 10:24 |
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 Jianchang is like
The warmest month is July, with an average high of 33 °C91 °F and a low of 25 °C77 °F. The coldest is January, when highs average 13 °C55 °F and lows 2 °C36 °F. Seasons are strongly marked: the warmest month is on average 21.3 °C38.3 °F warmer than the coldest.
It is wet, with about 1,882 mm74 in of precipitation per year. The wettest three-month stretch is April–June, which brings 46% of the annual total. The wettest month is June (354 mm14 in), the driest is October (53 mm2.1 in).
Relative humidity ranges from 78% in December to 86% in June. The clearest skies (lowest average cloud amount, 56%) are typical of October. Average wind speed near the ground ranges from 4 km/h (2 mph) in August to 5 km/h (3 mph) in April. Daylight lasts from about 10.4 hours in December to 13.9 hours in June.
Best time to visit Jianchang
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October: average highs of 26 °C79 °F to 26 °C79 °F with 53 mm2.1 in to 53 mm2.1 in of precipitation per month.
The most challenging month is June, which is hot, with average highs of 30 °C87 °F, very wet (354 mm14 in) and humid (86% relative humidity).
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.
What to pack for Jianchang
- Winter (December–February) — highs 1355 to 16 °C61 °F, lows 236 to 5 °C41 °F, about 83 mm3.3 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2068 to 28 °C83 °F, lows 948 to 19 °C66 °F, about 237 mm9.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and a good rain jacket or umbrella and quick-drying shoes.
- Summer (June–August) — highs 3087 to 33 °C91 °F, lows 2373 to 25 °C77 °F, about 223 mm8.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Autumn (September–November) — highs 2170 to 30 °C87 °F, lows 1050 to 21 °C70 °F, about 84 mm3.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Jianchang compares
Compared with Fuzhou, about 54 km to the northwest, Jianchang is on average 0.8 °C1.4 °F warmer and receives 5% more precipitation (1,882 mm74 in vs 1,788 mm70 in). The difference is largest in January (1.6 °C2.9 °F warmer).
Of the 547 places in China covered by World Climates, Jianchang is the 89th warmest by annual mean temperature and the 13th 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: Baton Rouge (United States, Cfa), Montgomery (United States, Cfa) and Shreveport (United States, Cfa).
Nearby places
- Fuzhou 54 km · 18 °C65 °F · 1,788 mm70 in
- Jinfeng 76 km · 19 °C66 °F · 1,867 mm74 in
- Yingtan 83 km · 19 °C66 °F · 1,867 mm74 in
- Shaowu 87 km · 19 °C66 °F · 1,955 mm77 in
- Wuyishan 139 km · 18 °C65 °F · 1,909 mm75 in
- Nanchang 147 km · 18 °C65 °F · 1,697 mm67 in
- Shangrao 162 km · 19 °C66 °F · 1,854 mm73 in
- Xinyu 170 km · 18 °C65 °F · 1,712 mm67 in
Frequently asked questions
What is the warmest month in Jianchang?
July is the warmest month in Jianchang, with an average high of 33 °C (91 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Jianchang?
January is the coldest month, with an average high of 13 °C (55 °F) and an average low of 2 °C (36 °F).
When does it rain the most in Jianchang?
June is the wettest month with about 354 mm (13.9 in) of precipitation; October is the driest with about 53 mm (2.1 in).
What is the best time to visit Jianchang?
Judging by long-term averages, the most comfortable months are 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.
The grid cell’s average elevation is 329 m, while Jianchang lies at about 78 m. Temperatures on this page were therefore adjusted by +1.6 °C2.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.