Climate and monthly weather forecast
Nanchang, China

Set in China's Jiangxi province, Nanchang claims a humid subtropical climate according to the Köppen climate classification, labeled as 'Cfa'. This designates a region bearing no dry season and typically facing a considerably warm climate. Across the calendar year, this city sees variations emerging in weather parameters that significantly affect the city's overall climate.

Earth's axial tilt implicates fluctuations in daylight hours from a minimum of 10.3 hours in December, stretching up to a high of 14 hours observed during June. Concurrently, the amount of sunshine received each day follows a similar pattern, reaching its zenith at 8 hours during July, and then receding to a nadir at merely 2.7 hours in March.

Depicting a trend akin to most subtropical climates, Nanchang experiences rainfall predominantly in the summer months. The city receives the heaviest rainfall, 307mm (12.09"), in June, almost seven times the annual low, 42mm (1.65"), observed in December. Despite the magnitude of rainfall, the frequency of rainy days stays between a high of 18 in April and reaching a low of 7.8 in December.

Opposing the rainfall pattern, temperatures escalate from a chilly 2.7°C (36.9°F) in January to a staggering 33.4°C (92.1°F) in July. The heat of the summer months coupled with high humidity levels tends to intensify the perception of warmth. Relative humidity hovers roughly between 71% and 84% throughout the year.

Taking into account rainfall, temperature, and sunlight hours, the best time suggested to visit Nanchang is from late autumn to early winter. Specifically, the months of November and December offer a mild and relatively dry climate that ensures a comfortable sightseeing experience. However, it is important to note that December brings the shortest daylight hours along with decreased sunshine hours, so daylight activities should be planned accordingly.

June emerges as the least favorable time to visit Nanchang, given the high levels of precipitation, peaking at 307mm (12.09"), and the temperatures soaring as high as 29.4°C (84.9°F). The high humidity levels only exacerbate the discomfort, making outdoor activities challenging to undertake.

The spring in Nanchang commences in March with an average high temperature of 14.6°C (58.3°F) and a rare low of 8.2°C (46.8°F). By May, the daytime temperature leaps to 26.3°C (79.3°F), while nights in the city are warm, displaying a temperature of about 19.2°C (66.6°F). This season also brings substantial rain, with May being the rainiest spring month, receiving 244mm (9.61") of rainfall dispersed over 16.6 rainy days.

The summer season in Nanchang, encompassing the months from June to August, is characterized by high temperatures and high humidity, punctuated by heavy rainfall. The maximum temperature hovers around 33.4°C (92.1°F) in July, while the lowest minimum recorded is 22.8°C (73°F) in June. June also tops as the wettest month in Nanchang with an average rainfall of 307mm (12.09").

Autumn sees a marked transition from the sweltering summer to the cooler autumn months in Nanchang. The temperatures drop from 28.7°C (83.7°F) in September to 17.6°C (63.7°F) in November, while the low temperatures follow a similar trend by decreasing from 21.6°C (70.9°F) to 10.1°C (50.2°F). The amount of rainfall also drops significantly, with November registering a moderate 57mm (2.24") compared to September's 69mm (2.72").

Winter in Nanchang runs from December to February, posing low temperatures that average between 4.6°C (40.3°F) and 2.7°C (36.9°F). The highs during this period only reach a moderate 12.1°C (53.8°F) in December, dropping to 8.7°C (47.7°F) by January. Accompanying the low temperatures, winter carries the least rainfall, with December marking the driest month of the year, sporting only 42mm (1.65") precipitation.

The new year brings Nanchang its coldest month. With the lowest recorded temperatures ranging from 2.7°C (36.9°F) to 8.7°C (47.7°F), January offers a chilly start to the year. An overcast sky is common, with sunlight appearing only in short spurts. Weather in January »

As Nanchang transitions from winter to spring, a slight temperature increase is evident but the city remains in the firm grip of the cold season. On the upside, the hours of daylight slightly lengthen, giving people a tad more sunlight to enjoy. Weather in February »

In Nanchang, March is a pivotal month showing a considerable jump in the average temperature bracket, from 8.2°C (46.8°F) to 14.6°C (58.3°F), setting the stage for warmer months. Venice of the East, as it gradually sheds its winter coat, sees longer days and the increase in sunshine is perceptible. Weather in March »

April in Nanchang is a truly spring month, shedding any residue cold from previous months. Temperature increase, longer days, and elevated UV index signify the city's transition towards summer. The contribution to this transformation is the increased rainfall, which makes April one of the city's rainiest months. Weather in April »

May serves as a clear signpost towards the impending summer in Nanchang. The temperature increase is palpable, and the days continue growing brighter and longer. The thickening vegetation provides a green canopy across the city, fed by the showers that are frequent but not unbearably so. Weather in May »

Nanchang experiences a distinct shift in weather during June. The rising heat, accompanied by the city's highest average rainfall of 307mm (12.09"), signals the arrival of early summer. There is an unmistakable contrast in the weather conditions during the day and night. Weather in June »

July walks in with sizzling temperatures, heralding true summer in Nanchang. This is the hottest month, with the mercury often rising to a scorching 33.4°C (92.1°F). Though the sultry afternoons are best spent indoors, evenings provide some respite from the heat. Weather in July »

August maintains the high temperatures of July, keeping Nanchang firmly in the summer bracket. The days are sunny with displays of cloud pastel blues and warm breezes. The rainfall drops substantially to 129mm (5.08"), resulting in slightly drier conditions. Weather in August »

September in Nanchang brings with it the first whispers of autumn. A noticeable dip in temperatures, along with a decrease in rainfall to 69mm (2.72"), underscores the transition from summer. The days are still pretty long, with a good amount of sunshine, perfect for a walk along the Gan River. Weather in September »

October sees Nanchang fully embracing the Autumn. Moderating temperatures and the diminishing rains make this an ideal month for outdoor activities. The city's ancient buildings, tinted by autumn colors, offer a magical sight-seeing experience. Weather in October »

November continues the cool trend of autumn in Nanchang. Daylight hours reduce, uniforms of vermilion and gold foliage reign over the cityscape. Evenings begin to run a slight chill, a harbinger of the forthcoming winter. There is a stark change in climate from the hot and humid summer months, providing a welcome relief for residents and visitors. Weather in November »

December brings the winter back to Nanchang. Cold winds sweep over the city, and warmer clothing resurfaces. The nostalgia of autumn continues with pleasant days under heavy, grey skies. Despite the temperatures dropping to 4.6°C (40.3°F), the cold remains manageable. Weather in December »