, with relatively cold winters, and hot, muggy and rainy summers. Shanghai is the largest city in China and is located in the east of the country, in the Yangtze (or Blue River) Delta.
amounts to 1,150 millimeters (46 inches) per year; there is no real dry season, however, autumn is the least rainy season, while summer, when the rains occur mainly in the form of showers or thunderstorms, is the rainiest season.
, from December to February, is quite cold: the average January temperature is 5 °C (41 °F). There may be cold periods, with highs around 5 °C (41 °F) or below, and occasionally, even snow can fall. The temperature dropped to -10 °C (14 °F) in January 1977 and to -7 °C (19.5 °F) in January 2016. On the other hand, in other periods, the temperature becomes mild, around 15 °C (59 °F).
, 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. The heat island effect of the big city and the humidity from the sea make the heat annoying, especially in July and August. However, the breeze tempers the heat a bit. June is the rainiest month of the year. In periods of good weather, it can be sweltering, especially in July and August, with highs around 37/38 °C (99/100 °F) or more, and tropical nights. In August 2013, the temperature reached 41 °C (106 °F), and in July 2017, it reached 42 °C (107.5 °F).
, in October and November, is initially mild, and gradually becomes cooler, and then quite cold at night by November. Rainfall is moderate.
Shanghai is not a very sunny city; however, the sunniest months (albeit slightly) are July and August, and autumn is a little bit sunnier than spring.
(East China Sea), cold in winter, becomes warm enough for swimming from July to September; in June and October, it is a bit cool.
, the tropical cyclones of Southeast Asia, can affect this area, though less so than in southern China. In May 2006, Typhoon Chanchu was the earliest typhoon to affect Shanghai in 80 years.
It is not easy to find the best time to visit Shanghai. Since spring is more rainy, you can choose autumn, especially from the end of September to the beginning of November, which is generally a mild or pleasantly warm period; it must be said that, in this period, the arrival of a typhoon can not be excluded.
. Here are the average temperatures.
January, the coldest month of the year, is generally a quite cold month. The average temperature is of
4.9 °C, with a minimum of
1.6 °C and a maximum of
8.3 °C.
On the coldest nights of the month, the temperature usually drops to around
-4 °C. However, it dropped to
-7 °C in January 1993.
On the warmest days of the month, the temperature usually reaches around
16.5 °C. However, it reached
24 °C in January 2020.
Precipitation amounts to
75 mm, distributed over 10 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
12.9 kph.
The average sea temperature is of
8.6 °C. Therefore, the sea is very cold for swimming.
February is generally a quite mild month. The average temperature is of
6.8 °C, with a minimum of
3.3 °C and a maximum of
10.3 °C.
On the coldest nights of the month, the temperature usually drops to around
-2.5 °C. However, it dropped to
-6 °C in February 1996.
On the warmest days of the month, the temperature usually reaches around
20.5 °C. However, it reached
27 °C in February 1998.
Precipitation amounts to
60 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 38% of the time.
The average humidity is 70%.
The average wind speed is of
13.5 kph.
The average sea temperature is of
7 °C. Therefore, the sea is very cold for swimming.
March is generally a mild month. The average temperature is of
10.8 °C, with a minimum of
7.2 °C and a maximum of
14.4 °C.
On the coldest nights of the month, the temperature usually drops to around
0.5 °C. However, it dropped to
-2 °C in March 1994.
On the warmest days of the month, the temperature usually reaches around
24.5 °C. However, it reached
31 °C in March 2013.
Precipitation amounts to
95 mm, distributed over 12 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 69%.
The average wind speed is of
14.3 kph.
The average sea temperature is of
8.2 °C. Therefore, the sea is very cold for swimming.
April is generally a very mild month. The average temperature is of
16.5 °C, with a minimum of
12.5 °C and a maximum of
20.4 °C.
On the coldest nights of the month, the temperature usually drops to around
5.5 °C. However, it dropped to
0 °C in April 1991.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
33 °C in April 2004.
Precipitation amounts to
75 mm, distributed over 11 days.
The day lasts on average 13 hours and 0 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 68%.
The average wind speed is of
14.1 kph.
The average sea temperature is of
11.5 °C. Therefore, the sea is very cold for swimming.
May is generally a warm month. The average temperature is of
21.7 °C, with a minimum of
17.8 °C and a maximum of
25.6 °C.
On the coldest nights of the month, the temperature usually drops to around
12 °C. However, it dropped to
8 °C in May 1995.
On the warmest days of the month, the temperature usually reaches around
32.5 °C. However, it reached
37 °C in May 2018.
Precipitation amounts to
84.5 mm, distributed over 10 days.
The day lasts on average 13 hours and 50 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 69%.
The average wind speed is of
14.1 kph.
The average sea temperature is of
16.9 °C. Therefore, the sea is cold for swimming.
June is generally a warm to hot, muggy month. The average temperature is of
25.1 °C, with a minimum of
22 °C and a maximum of
28.3 °C.
On the coldest nights of the month, the temperature usually drops to around
17.5 °C. However, it dropped to
15 °C in June 1995.
On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
38 °C in June 2018.
Precipitation amounts to
180 mm, distributed over 13 days.
The day lasts on average 14 hours and 5 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 4.5 hours of sunshine per day. So, the sun shines 31% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of
12.5 kph.
The average sea temperature is of
21.7 °C. Therefore, the sea is cool for swimming.
July, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of
29.5 °C, with a minimum of
26.2 °C and a maximum of
32.8 °C.
On the coldest nights of the month, the temperature usually drops to around
22 °C. However, it dropped to
18 °C in July 2015.
On the warmest days of the month, the temperature usually reaches around
38 °C. However, it reached
42 °C in July 2017.
Precipitation amounts to
145 mm, distributed over 11 days.
The day lasts on average 13 hours and 55 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
13.8 kph.
The average sea temperature is of
25.5 °C. Therefore, the sea is warm enough for swimming.
August is generally a very hot, muggy month. The average temperature is of
29.2 °C, with a minimum of
26 °C and a maximum of
32.3 °C.
On the coldest nights of the month, the temperature usually drops to around
22 °C. However, it dropped to
19 °C in August 1993.
On the warmest days of the month, the temperature usually reaches around
36.5 °C. However, it reached
41 °C in August 2013.
Precipitation amounts to
215 mm, distributed over 12 days.
The day lasts on average 13 hours and 10 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
14.4 kph.
The average sea temperature is of
27.3 °C. Therefore, the sea is pleasantly warm and allows long swims.
September is generally a warm to hot, muggy month. The average temperature is of
25.1 °C, with a minimum of
21.8 °C and a maximum of
28.4 °C.
On the coldest nights of the month, the temperature usually drops to around
16.5 °C. However, it dropped to
13 °C in September 1993.
On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
37 °C in September 1995.
Precipitation amounts to
85 mm, distributed over 9 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 45% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
13.4 kph.
The average sea temperature is of
25.4 °C. Therefore, the sea is warm enough for swimming.
October is generally a warm month. The average temperature is of
19.7 °C, with a minimum of
16 °C and a maximum of
23.3 °C.
On the coldest nights of the month, the temperature usually drops to around
9.5 °C. However, it dropped to
5 °C in October 1993.
On the warmest days of the month, the temperature usually reaches around
29 °C. However, it reached
33 °C in October 2002.
Precipitation amounts to
55 mm, distributed over 7 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 46% of the time.
The average humidity is 70%.
The average wind speed is of
12.2 kph.
The average sea temperature is of
22 °C. Therefore, the sea is cool for swimming.
November is generally a mild month. The average temperature is of
13.7 °C, with a minimum of
10 °C and a maximum of
17.4 °C.
On the coldest nights of the month, the temperature usually drops to around
2.5 °C. However, it dropped to
-3 °C in November 1993.
On the warmest days of the month, the temperature usually reaches around
24.5 °C. However, it reached
29 °C in November 2020.
Precipitation amounts to
50 mm, distributed over 8 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 41% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
12.2 kph.
The average sea temperature is of
18 °C. Therefore, the sea is cold for swimming.
December is generally a quite mild month. The average temperature is of
7.3 °C, with a minimum of
3.7 °C and a maximum of
11 °C.
On the coldest nights of the month, the temperature usually drops to around
-3 °C. However, it dropped to
-8 °C in December 1991.
On the warmest days of the month, the temperature usually reaches around
18.5 °C. However, it reached
22 °C in December 2008.
Precipitation amounts to
45 mm, distributed over 8 days.
The day lasts on average 10 hours and 10 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 4 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 69%.
The average wind speed is of
12.4 kph.
The average sea temperature is of
12.9 °C. Therefore, the sea is very cold for swimming.