Climate - Changsha (Hunan)

The climate of Changsha is temperate humid, with quite cold winters and hot, muggy and rainy summers.
The city is located in southern China, in the province of Hunan, at 28 degrees north latitude, on the banks of the Xiang River, which 50 km (30 mi) to the north feeds Lake Dongting.
From January to June, the sky is often cloudy and the rains are frequent, but at first they are quite light, then they gradually become more abundant. In July and August, the rains become less frequent, and these are also the sunniest months of the year. The rains continue with moderate frequency until December.
In winter there are mild periods, but also quite cold periods, in which fog forms. In addition, there can sometimes be very cold periods, with snow and frost. In January 2016, the temperature dropped to -6.6 °C (20.1 °F).
Summer is particularly hot and humid. On the hottest days, the temperature can reach 39/40 °C (102/104 °F).

Best Time

It is not easy to find the best time to visit Changsha. 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.

Changsha - Climate data

In Changsha, the average temperature of the coldest month (January) is of 5.3 °C (41.6 °F), that of the warmest month (July) is of 30.0 °C (86.0 °F). Here are the average temperatures.
In Changsha, precipitation amounts to 1430 millimeters (56.3 inches) per year: it is therefore quite abundant. It ranges from 45 mm (1.8 in) in the driest month (December) to 225 mm (8.9 in) in the wettest one (June). Here is the average precipitation.
In Changsha, there are on average around 1545 sunshine hours per year. Here are the average hours of sunshine per day.

Changsha - Weather by month

Based on the period 2004-2020

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In January, the coldest month of the year, the weather in Changsha is usually quite cold. The average temperature is of 5.3 °C (42 °F), with a minimum of 2 °C (35.7 °F) and a maximum of 8.6 °C (47.5 °F).
On the coldest nights of the month, the temperature usually drops to around -3 °C (26.5 °F). However, it dropped to -6 °C (21.2 °F) in January 2016.
On the warmest days of the month, the temperature usually reaches around 18.5 °C (65.5 °F). However, it reached 27 °C (80.6 °F) in January 2014.
Precipitation amounts to 75 mm (3 in), distributed over 14 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 23% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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In February, the weather in Changsha is usually quite mild. The average temperature is of 7.9 °C (46 °F), with a minimum of 4.4 °C (39.9 °F) and a maximum of 11.5 °C (52.6 °F).
On the coldest nights of the month, the temperature usually drops to around -1.5 °C (29.5 °F). However, it dropped to -6 °C (21.2 °F) in February 2008.
On the warmest days of the month, the temperature usually reaches around 24.5 °C (76 °F). However, it reached 30 °C (86 °F) in February 2010.
Precipitation amounts to 95 mm (3.7 in), distributed over 14 days.
The day lasts on average 11 hours and 10 minutes.
There are on average 2 hours of sunshine per day. So, the sun shines 20% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).

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In March, the weather in Changsha is usually mild. The average temperature is of 13.0 °C (55 °F), with a minimum of 9.1 °C (48.5 °F) and a maximum of 16.8 °C (62.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 2 °C (36 °F). However, it dropped to -2 °C (28.4 °F) in March 2006.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 28.5 °C (83.5 °F). However, it reached 33 °C (91.4 °F) in March 2007.
Precipitation amounts to 140 mm (5.5 in), distributed over 18 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 2 hours of sunshine per day. So, the sun shines 19% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 9 kph (5 mph).

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In April, the weather in Changsha is usually warm. The average temperature is of 18.8 °C (66 °F), with a minimum of 14.6 °C (58.2 °F) and a maximum of 23 °C (73.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 7.5 °C (46 °F). However, it dropped to 4 °C (39.2 °F) in April 2010.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 32 °C (90 °F). However, it reached 35 °C (95 °F) in April 2005.
Precipitation amounts to 190 mm (7.5 in), distributed over 19 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 23% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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In May, the weather in Changsha is usually warm to hot and muggy. The average temperature is of 23.4 °C (74 °F), with a minimum of 19.4 °C (67 °F) and a maximum of 27.4 °C (81.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 13 °C (55.5 °F). However, it dropped to 11.5 °C (52.7 °F) in May 2015.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 34.5 °C (94 °F). However, it reached 38 °C (100.4 °F) in May 2008.
Precipitation amounts to 180 mm (7.1 in), distributed over 16 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 9 kph (5 mph).

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In June, the weather in Changsha is usually warm to hot and muggy. The average temperature is of 26.9 °C (80 °F), with a minimum of 23.4 °C (74 °F) and a maximum of 30.4 °C (86.7 °F).
On the coldest nights, the temperature usually drops to around 19 °C (66 °F). However, it dropped to 16 °C (60.8 °F) in June 2013.
On the warmest days, the temperature usually reaches around 36 °C (97 °F). However, it reached 38 °C (100.4 °F) in June 2005.
Precipitation amounts to 225 mm (8.9 in), distributed over 13 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 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).

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In July, the hottest month of the year, the weather in Changsha is usually very hot and muggy. The average temperature is of 30.0 °C (86 °F), with a minimum of 25.9 °C (78.6 °F) and a maximum of 34.1 °C (93.4 °F).
On the coldest nights of the month, the temperature usually drops to around 22.5 °C (73 °F). However, it dropped to 19 °C (66.2 °F) in July 2015.
On the warmest days of the month, the temperature usually reaches around 38.5 °C (101.5 °F). However, it reached 41 °C (105.8 °F) in July 2008.
Precipitation amounts to 145 mm (5.7 in), distributed over 10 days.
The day lasts on average 13 hours and 40 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).

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In August, the weather in Changsha is usually very hot and muggy. The average temperature is of 29.5 °C (85 °F), with a minimum of 25.2 °C (77.3 °F) and a maximum of 33.8 °C (92.8 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (69.5 °F). However, it dropped to 18 °C (64.4 °F) in August 2005.
On the warmest days of the month, the temperature usually reaches around 38.5 °C (101 °F). However, it reached 40 °C (104 °F) in August 2007.
Precipitation amounts to 105 mm (4.1 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 74%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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In September, the weather in Changsha is usually warm to hot and muggy. The average temperature is of 25.3 °C (78 °F), with a minimum of 21.2 °C (70.1 °F) and a maximum of 29.4 °C (84.9 °F).
On the coldest nights, the temperature usually drops to around 16 °C (61 °F). However, it dropped to 13 °C (55.4 °F) in September 2011.
On the warmest days, the temperature usually reaches around 36.5 °C (97.5 °F). However, it reached 39 °C (102.2 °F) in September 2008.
Precipitation amounts to 75 mm (3 in), distributed over 10 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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In October, the weather in Changsha is usually warm. The average temperature is of 19.8 °C (68 °F), with a minimum of 15.5 °C (59.9 °F) and a maximum of 24.2 °C (75.5 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 10 °C (49.5 °F). However, it dropped to 5 °C (41 °F) in October 2010.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 31.5 °C (89 °F). However, it reached 38 °C (100.4 °F) in October 2019.
Precipitation amounts to 75 mm (3 in), distributed over 11 days.
The day lasts on average 11 hours and 30 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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In November, the weather in Changsha is usually mild. The average temperature is of 13.6 °C (56 °F), with a minimum of 9.3 °C (48.8 °F) and a maximum of 17.9 °C (64.2 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 3 °C (37.5 °F). However, it dropped to -2 °C (28.4 °F) in November 2007.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 27 °C (81 °F). However, it reached 31 °C (87.8 °F) in November 2005.
Precipitation amounts to 80 mm (3.1 in), distributed over 10 days.
The day lasts on average 10 hours and 40 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 36% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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In December, the weather in Changsha is usually quite mild. The average temperature is of 7.6 °C (46 °F), with a minimum of 3.5 °C (38.3 °F) and a maximum of 11.7 °C (53.1 °F).
On the coldest nights of the month, the temperature usually drops to around -2.5 °C (27.5 °F). However, it dropped to -6 °C (21.2 °F) in December 2004.
On the warmest days of the month, the temperature usually reaches around 19.5 °C (67 °F). However, it reached 24 °C (75.2 °F) in December 2010.
Precipitation amounts to 45 mm (1.8 in), distributed over 9 days.
The day lasts on average 10 hours and 25 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 3.5 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).