Weather in Jiangsu

Calculated from weather data of Nanjing Lukou International Airport (ZSNJ) between 2020 and 2024.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	8.4	9.3	10.5	8.1	9.4	7.7
February	10.2	8.6	9.5	8.3	14.8	13.0
March	17.0	17.3	18.1	18.5	15.8	16.8
April	22.1	22.0	22.3	23.0	20.6	21.3
May	27.1		26.8	26.6	26.6	28.1
June	30.1		30.1	32.2	30.1	29.1
July	32.8		32.5	35.7	32.1	28.0
August	33.3		32.8	36.1	31.3	34.7
September	28.6		28.3	28.3	30.8	28.3
October	22.8		24.8	22.1	23.6	21.6
November	17.7		18.3	18.3	18.1	17.1
December	10.1		9.8	8.8	12.5	8.6
Average	20.9	14.3	22.1	22.6	22.2	21.2

18th highest temperature of China

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	0.0	-1	-2	1	-1	2
February	1.9	1	2	1	5	3
March	7.3	7	8	9	8	7
April	12.3	14	12	12	12	10
May	17.6		17	16	18	19
June	22.2		22	23	23	23
July	25.6		26	27	26	23
August	25.3		25	27	24	26
September	20.6		22	20	22	20
October	13.4		14	13	15	13
November	7.6		6	10	7	9
December	0.4		0	0	0	0
Average	12.0	5.3	12.6	13.5	13.2	12.8

19th lowest temperature of China

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days	2024	2023	2022	2021	2020
30 °C or warmer	1	89	92	89	67
25 °C or warmer	10	154	152	150	140
20 °C or warmer	28	219	211	206	213
0 °C or colder	32	44	31	33	25

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	15.4	12	7	18	8	28
February	16.3	31	15	18	12	12
March	11.7	10	10	13	14	14
April	7.8	14	8	6	12	3
May	7.0		9	3	11	5
June	10.1		15	3	12	17
July	10.6		11	2	20	25
August	6.6		7	1	11	2
September	9.0		15	7	2	11
October	8.1		5	9	11	11
November	8.0		4	8	4	13
December	10.4		11	9	3	8
Average	10.6	16.3	9.6	7.7	10.2	12.5

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (km/h)

Month	Average	2024	2023	2022	2021	2020
January	10.6	9	10	10	12	10
February	11.7	11	12	12	14	12
March	12.5	12	13	13	13	13
April	12.5	13	15	11	13	12
May	12.1		12	12	12	13
June	12.4		11	15	11	12
July	12.7		13	12	15	11
August	12.6		11	13	10	12
September	10.6		10	12	12	9
October	10.8		10	13	10	11
November	11.0		11	10	12	11
December	9.6		9	10	10	9
Average	11.6	11.2	11.4	12.0	11.9	11.3

23rd highest wind speed of China

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	N	NE	E	NW	NE
February	NE	E	E	E	E
March	E	E	E	E	E
April	E	E	E	E	E
May		SE	SE	S	S
June		S	S	SE	SE
July		S	SW	SE	SE
August		E	SW	E	SW
September		E	NE	E	NE
October		E	E	NE	E
November		NW	NE	NW	E
December		NW	N	N	NE

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Jiangsu weather Q&A

What is the warmest month in Jiangsu?

The warmest month is August with an average temperature of 33 °C over the past years.

What is the coldest month in Jiangsu?

The coldest month is January with an average daytime temperature of 8 °C in the past few years.

Which month is the wettest in Jiangsu?

Chance of precipitation is the highest in February with a probability of around 16.3 %.

Which month is the driest in Jiangsu?

The least rainfall and snow can be expected in August. The probability is about 6.6 %.