The city is the capital of the Anhui province and is located in the east of China, at 31 degrees north latitude, on the north shore of Lake Chao, and west of Nanjing and Shanghai.
, from December to February, is quite cold: the average January temperature is 3 °C (37.5 °F). There may be very cold periods, with temperatures around freezing even during the day, and with some chance of snow. The temperature dropped to -13.5 °C (7.7 °F) in December 1991, and to -12 °C (10.5 °F) in January 1984 and in February 2008. In other periods, instead, the temperature becomes mild, around 15 °C (59 °F). At night, fog can form.
, from March to May, is initially mild, and becomes gradually warmer. In May, there are already some hot, summer-like days. Spring is a more unstable season than autumn.
, from June to September, is hot and muggy. Both the heat island effect of the big city and the humidity make the heat uncomfortable, especially in July and August. June is a wet and cloudy month. Periods of good weather can be sweltering, especially in July and August, with highs around 37/38 °C (99/100 °F) or more and tropical nights. The temperature reached 40 °C (104 °F) in August 2003 and in August 2013, and 41 °C (106 °F) in July 2017.
, in October and November, is initially mild, and gradually becomes cooler, and then quite cold at night by November. This is the time of year when the rains are least frequent.
, the tropical cyclones of Southeast Asia, can affect this area, though less frequently than in southern China.
The best times to visit Hefei are spring and autumn, and in particular, from April to mid-May and from the end of September to the beginning of November. It must be said that spring is rainier, while in autumn, the arrival of a typhoon can not be excluded.
. Here are the average temperatures.
January, the coldest month of the year, is generally a cold month. The average temperature is of
3 °C, with a minimum of
-1.1 °C and a maximum of
7.1 °C.

On the coldest nights of the month, the temperature usually drops to around
-6.5 °C. However, it dropped to
-11 °C in January 2016.

On the warmest days of the month, the temperature usually reaches around
15.5 °C. However, it reached
23 °C in January 2014.

Precipitation amounts to
40 mm, distributed over 8 days.
The day lasts on average 10 hours and 20 minutes.

There are on average 4 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
9.2 kph.
February is generally a quite cold month. The average temperature is of
5.6 °C, with a minimum of
1.2 °C and a maximum of
10 °C.

On the coldest nights of the month, the temperature usually drops to around
-4.5 °C. However, it dropped to
-12 °C in February 2008.

On the warmest days of the month, the temperature usually reaches around
20 °C. However, it reached
27.5 °C in February 2009.

Precipitation amounts to
50 mm, distributed over 9 days.
The day lasts on average 11 hours and 5 minutes.

There are on average 4 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
10.2 kph.
March is generally a mild month. The average temperature is of
10.4 °C, with a minimum of
5.5 °C and a maximum of
15.2 °C.

On the coldest nights of the month, the temperature usually drops to around
-0.5 °C. However, it dropped to
-3.8 °C in March 2006.

On the warmest days of the month, the temperature usually reaches around
26 °C. However, it reached
31 °C in March 2007.

Precipitation amounts to
75 mm, distributed over 12 days.
The day lasts on average 12 hours and 0 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 69%.
The average wind speed is of
11 kph.
April is generally a very mild month. The average temperature is of
16.5 °C, with a minimum of
11.4 °C and a maximum of
21.7 °C.

On the coldest nights of the month, the temperature usually drops to around
5 °C. However, it dropped to
1 °C in April 2015.

On the warmest days of the month, the temperature usually reaches around
30 °C. However, it reached
34.7 °C in April 2011.

Precipitation amounts to
80 mm, distributed over 10 days.
The day lasts on average 13 hours and 0 minutes.

There are on average 5.5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 68%.
The average wind speed is of
10.9 kph.
May is generally a warm month. The average temperature is of
21.9 °C, with a minimum of
16.9 °C and a maximum of
27 °C.

On the coldest nights of the month, the temperature usually drops to around
11 °C. However, it dropped to
7 °C in May 2004.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
38 °C in May 2020.

Precipitation amounts to
90 mm, distributed over 10 days.
The day lasts on average 13 hours and 50 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 68%.
The average wind speed is of
10.4 kph.
June is generally a warm to hot, muggy month. The average temperature is of
25.4 °C, with a minimum of
21.3 °C and a maximum of
29.6 °C.

On the coldest nights of the month, the temperature usually drops to around
17 °C. However, it dropped to
13.9 °C in June 2015.

On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
37 °C in June 2006.

Precipitation amounts to
145 mm, distributed over 11 days.
The day lasts on average 14 hours and 10 minutes. So the days are long. 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 39% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
9.9 kph.
July, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of
28.8 °C, with a minimum of
24.9 °C and a maximum of
32.7 °C.

On the coldest nights of the month, the temperature usually drops to around
21 °C. However, it dropped to
17.5 °C in July 2015.

On the warmest days of the month, the temperature usually reaches around
37.5 °C. However, it reached
41.1 °C in July 2017.

Precipitation amounts to
175 mm, distributed over 12 days.
The day lasts on average 14 hours and 0 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
9.9 kph.
August is generally a very hot, muggy month. The average temperature is of
28.1 °C, with a minimum of
24.1 °C and a maximum of
32 °C.

On the coldest nights of the month, the temperature usually drops to around
19.5 °C. However, it dropped to
15.8 °C in August 2009.

On the warmest days of the month, the temperature usually reaches around
37 °C. However, it reached
40.3 °C in August 2003.

Precipitation amounts to
125 mm, distributed over 11 days.
The day lasts on average 13 hours and 20 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
9.6 kph.
September is generally a warm to hot, muggy month. The average temperature is of
23.7 °C, with a minimum of
19.3 °C and a maximum of
28 °C.

On the coldest nights of the month, the temperature usually drops to around
14.5 °C. However, it dropped to
10 °C in September 2012.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
38.3 °C in September 1995.

Precipitation amounts to
65 mm, distributed over 8 days.
The day lasts on average 12 hours and 20 minutes.

There are on average 5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
9.1 kph.
October is generally a very mild month. The average temperature is of
17.8 °C, with a minimum of
12.9 °C and a maximum of
22.8 °C.

On the coldest nights of the month, the temperature usually drops to around
6.5 °C. However, it dropped to
1.9 °C in October 1997.

On the warmest days of the month, the temperature usually reaches around
30 °C. However, it reached
34.7 °C in October 2002.

Precipitation amounts to
55 mm, distributed over 8 days.
The day lasts on average 11 hours and 25 minutes.

There are on average 5 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
8.6 kph.
November is generally a mild month. The average temperature is of
11.2 °C, with a minimum of
6.1 °C and a maximum of
16.2 °C.

On the coldest nights of the month, the temperature usually drops to around
-0.5 °C. However, it dropped to
-6 °C in November 2016.

On the warmest days of the month, the temperature usually reaches around
24.5 °C. However, it reached
30.1 °C in November 2003.

Precipitation amounts to
60 mm, distributed over 8 days.
The day lasts on average 10 hours and 30 minutes.

There are on average 5 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
9.3 kph.
December is generally a quite cold month. The average temperature is of
5.2 °C, with a minimum of
0.6 °C and a maximum of
9.8 °C.

On the coldest nights of the month, the temperature usually drops to around
-5.5 °C. However, it dropped to
-13.5 °C in December 1991.

On the warmest days of the month, the temperature usually reaches around
17 °C. However, it reached
22.3 °C in December 2008.

Precipitation amounts to
30 mm, distributed over 6 days.
The day lasts on average 10 hours and 5 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 70%.
The average wind speed is of
9.3 kph.