Climate - Nanchang (Jiangxi)
Average weather, temperature, rainfall, sunshine hours
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Climate chart - Nanchang (Jiangxi)
The climate of Nanchang is temperate, with relatively cold winters and hot, muggy and rainy summers. Nanchang is the capital of the Jiangxi Province and is located in southeastern China, at a low latitude (at the 28th parallel), but also in a large continental area, and 450 kilometers (280 miles) away from the sea, so the summer heat is intense and annoying, while in winter, cold air can stagnate on the ground. Nanchang is a city with a millennia-old history, but today it is a metropolis, polluted as often happens in large Chinese cities.
Here are the average temperatures.
Nanchang - Average temperatures (1991-2020) | Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
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| January | 3.1 | 8.9 | 6 | 38 | 48 | 42.8 |
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| February | 5.2 | 11.8 | 8.5 | 41 | 53 | 47.3 |
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| March | 8.8 | 15.7 | 12.3 | 48 | 60 | 54.1 |
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| April | 14.6 | 22.2 | 18.4 | 58 | 72 | 65.2 |
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| May | 19.7 | 27.1 | 23.4 | 67 | 81 | 74.1 |
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| June | 23.1 | 29.6 | 26.3 | 74 | 85 | 79.4 |
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| July | 26.1 | 33.5 | 29.8 | 79 | 92 | 85.7 |
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| August | 25.9 | 33.1 | 29.5 | 79 | 92 | 85.1 |
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| September | 22.2 | 29.4 | 25.8 | 72 | 85 | 78.4 |
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| October | 16.8 | 24.3 | 20.5 | 62 | 76 | 69 |
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| November | 10.4 | 18.1 | 14.2 | 51 | 65 | 57.6 |
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| December | 4.8 | 11.8 | 8.3 | 41 | 53 | 47 |
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| Year | 15.1 | 22.2 | 18.6 | 59.2 | 71.9 | 65.5 |
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Precipitation is quite abundant, and amounts to 1,615 millimeters (64 inches) per year. We can notice a minimum between autumn and early winter, and a clear maximum between spring and early summer: more than 200 mm (8 in) of rain per month fall between April and June. Here is the average rainfall.
Nanchang - Average precipitation| Month | Millimeters | Inches | Days |
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| January | 80 | 3.1 | 13 |
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| February | 105 | 4.1 | 14 |
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| March | 175 | 6.9 | 17 |
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| April | 220 | 8.7 | 17 |
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| May | 225 | 8.9 | 16 |
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| June | 300 | 11.8 | 15 |
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| July | 140 | 5.5 | 11 |
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| August | 125 | 4.9 | 10 |
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| September | 70 | 2.8 | 7 |
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| October | 55 | 2.2 | 8 |
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| November | 75 | 3 | 9 |
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| December | 45 | 1.8 | 8 |
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| Year | 1615 | 63.6 | 144 |
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Winter, from December to February, is not very cold on average, in fact, the average January temperature is 6 °C (42 °F). However, there may be cold periods, with temperatures remaining around freezing even during the day and with possible snowfalls. At other periods, subtropical air masses prevail, so much so that the temperature becomes decidedly mild, around 20 °C (68 °F) during the day. Sunny days are a bit more frequent in December, then they become rarer.
Spring, from March to May, is initially mild, and then becomes gradually warmer, but it is also decidedly rainy. In May, there are already several warm and summer-like days, at least as regards to the temperature.
Summer, from June to September, is decidedly hot and muggy. The distance from the sea and the humidity make the heat sweltering, especially in July and August. June is a very rainy month and there's not much sun, then the weather gradually becomes more stable, but on sunny periods, it can be very hot, especially in July and August, with peaks around 36/38 °C (97/100 °F) and tropical nights.
Autumn, in October and November, is initially mild, and gradually becomes cooler, and then quite cold at night by November. The rains are not very frequent: autumn is the least rainy season of the year.
On average, the amount of sunshine in Nanchang is never very good; however, it is quite good in July and August, while it is low (with a percentage equal to or less than 30%) from January to April.
Nanchang - Sunshine hours| Month | Average | Total |
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January | 3 | 90 | February | 3 | 85 | March | 3 | 95 | April | 4 | 125 | May | 5 | 160 | June | 5.5 | 160 | July | 8 | 250 | August | 7.5 | 235 | September | 6.5 | 190 | October | 5.5 | 170 | November | 5 | 145 | December | 4.5 | 140 | Year | 5 | 1835 |
Every so often, from June to October, typhoons, the tropical cyclones of Southeast Asia, which most easily affect the coastal areas, can penetrate the mainland, even though they arrive in this area decidedly weakened because of the distance from the sea.
To the north of the city lies Poyang lake, the largest freshwater lake in China, which is fed by five rivers (including the Gan River, which crosses Nanchang) and is famous not only for being the habitat of a large number of migratory birds but also for having swallowed a large number of boats and people over the centuries. The lake is affected by the rainfall level, and risks disappearing during the driest winters, also because of the Three Gorges Dam, which was built upstream on the Blue River (Yangtze) and was completed in 2006.
Best Time
It is not easy to find the best time to visit Nanchang. Being that the spring is very rainy and with little sunshine, you can choose autumn, especially from late September to early November, since it is the least rainy period of the year, and it is generally mild or pleasantly warm; it must be said that the arrival of the remains of a typhoon can not be excluded.
Nanchang - Weather by month
Based on the period 1991-2020
January, the coldest month of the year, is generally a quite cold month. The average temperature is of 6 °C (43 °F), with a minimum of 3.1 °C (37.5 °F) and a maximum of 8.9 °C (48.1 °F).
On the coldest nights of the month, the temperature usually drops to around -1.5 °C (29 °F). However, it dropped to -5.3 °C (22.5 °F) in January 2016.
On the warmest days of the month, the temperature usually reaches around 17.5 °C (63 °F). However, it reached 25.3 °C (77.5 °F) in January 1992.
Precipitation amounts to 80 mm (3.1 in), distributed over 13 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 27% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).
February is generally a quite mild month. The average temperature is of 8.5 °C (47 °F), with a minimum of 5.2 °C (41.4 °F) and a maximum of 11.8 °C (53.2 °F).
On the coldest nights of the month, the temperature usually drops to around 0 °C (31.5 °F). However, it dropped to -4.2 °C (24.4 °F) in February 2008.
On the warmest days of the month, the temperature usually reaches around 22.5 °C (72.5 °F). However, it reached 28.7 °C (83.7 °F) in February 2009.
Precipitation amounts to 105 mm (4.1 in), distributed over 14 days.
The day lasts on average 11 hours and 10 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 26% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).
March is generally a mild month. The average temperature is of 12.3 °C (54 °F), with a minimum of 8.8 °C (47.9 °F) and a maximum of 15.7 °C (60.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 3 °C (37.5 °F). However, it dropped to -1.5 °C (29.3 °F) in March 2010.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 26.5 °C (80 °F). However, it reached 32 °C (89.6 °F) in March 2007.
Precipitation amounts to 175 mm (6.9 in), distributed over 17 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 25% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).
April is generally a warm month. The average temperature is of 18.4 °C (65 °F), with a minimum of 14.6 °C (58.3 °F) and a maximum of 22.2 °C (72 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 8.5 °C (47 °F). However, it dropped to 0 °C (32 °F) in April 2001.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 30.5 °C (87.5 °F). However, it reached 34.6 °C (94.3 °F) in April 2005.
Precipitation amounts to 220 mm (8.7 in), distributed over 17 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).
May is generally a warm to hot, muggy month. The average temperature is of 23.4 °C (74 °F), with a minimum of 19.7 °C (67.5 °F) and a maximum of 27.1 °C (80.7 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 15 °C (59 °F). However, it dropped to 11.7 °C (53.1 °F) in May 2004.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 33.5 °C (92 °F). However, it reached 35.5 °C (95.9 °F) in May 2004.
Precipitation amounts to 225 mm (8.9 in), distributed over 16 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).
June is generally a warm to hot, muggy month. The average temperature is of 26.3 °C (79 °F), with a minimum of 23.1 °C (73.5 °F) and a maximum of 29.6 °C (85.3 °F).
On the coldest nights, the temperature usually drops to around 19.5 °C (66.5 °F). However, it dropped to 17.5 °C (63.5 °F) in June 1997.
On the warmest days, the temperature usually reaches around 35 °C (95 °F). However, it reached 37.2 °C (99 °F) in June 2013.
Precipitation amounts to 300 mm (11.8 in), distributed over 15 days.
The day lasts on average 13 hours and 55 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 5.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).
July, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 29.8 °C (86 °F), with a minimum of 26.1 °C (79 °F) and a maximum of 33.5 °C (92.4 °F).
On the coldest nights of the month, the temperature usually drops to around 22.5 °C (72 °F). However, it dropped to 18.9 °C (66 °F) in July 2015.
On the warmest days of the month, the temperature usually reaches around 37.5 °C (99.5 °F). However, it reached 40.1 °C (104.2 °F) in July 1992.
Precipitation amounts to 140 mm (5.5 in), distributed over 11 days.
The day lasts on average 13 hours and 50 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).
August is generally a very hot, muggy month. The average temperature is of 29.5 °C (85 °F), with a minimum of 25.9 °C (78.6 °F) and a maximum of 33.1 °C (91.6 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F). However, it dropped to 19.7 °C (67.5 °F) in August 2001.
On the warmest days of the month, the temperature usually reaches around 37 °C (98.5 °F). However, it reached 39.6 °C (103.3 °F) in August 2010.
Precipitation amounts to 125 mm (4.9 in), distributed over 10 days.
The day lasts on average 13 hours and 5 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 7 kph (5 mph).
September is generally a warm to hot, muggy month. The average temperature is of 25.8 °C (78 °F), with a minimum of 22.2 °C (72 °F) and a maximum of 29.4 °C (84.9 °F).
On the coldest nights, the temperature usually drops to around 17.5 °C (64 °F). However, it dropped to 15 °C (59 °F) in September 1997.
On the warmest days, the temperature usually reaches around 35.5 °C (95.5 °F). However, it reached 38 °C (100.4 °F) in September 1995.
Precipitation amounts to 70 mm (2.8 in), distributed over 7 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 7 kph (5 mph).
October is generally a warm month. The average temperature is of 20.5 °C (69 °F), with a minimum of 16.8 °C (62.2 °F) and a maximum of 24.3 °C (75.8 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 11.5 °C (53 °F). However, it dropped to 7.4 °C (45.3 °F) in October 1991.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 31.5 °C (88.5 °F). However, it reached 35.5 °C (95.9 °F) in October 2019.
Precipitation amounts to 55 mm (2.2 in), distributed over 8 days.
The day lasts on average 11 hours and 25 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 67%.
The average wind speed is 7 kph (5 mph).
November is generally a mild month. The average temperature is of 14.2 °C (58 °F), with a minimum of 10.4 °C (50.8 °F) and a maximum of 18.1 °C (64.5 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 4.5 °C (39.5 °F). However, it dropped to -0.8 °C (30.6 °F) in November 1993.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 26.5 °C (79.5 °F). However, it reached 31.4 °C (88.5 °F) in November 2013.
Precipitation amounts to 75 mm (3 in), distributed over 9 days.
The day lasts on average 10 hours and 40 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 70%.
The average wind speed is 7 kph (4 mph).
December is generally a quite mild month. The average temperature is of 8.3 °C (47 °F), with a minimum of 4.8 °C (40.7 °F) and a maximum of 11.8 °C (53.2 °F).
On the coldest nights of the month, the temperature usually drops to around -1 °C (30.5 °F). However, it dropped to -9.7 °C (14.5 °F) in December 1991.
On the warmest days of the month, the temperature usually reaches around 18.5 °C (65.5 °F). However, it reached 24.2 °C (75.6 °F) in December 2019.
Precipitation amounts to 45 mm (1.8 in), distributed over 8 days.
The day lasts on average 10 hours and 20 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 4.5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 69%.
The average wind speed is 7 kph (4 mph).
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