Jiujiang climate — normals and trends
Jiujiang (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.3 °C and it receives 1,853 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (29.2 °C on average) and the coldest is January (4.6 °C). Rainfall peaks in June.
Jiujiang averages 16 frost days, 73 hot days (≥ 30 °C) and 150 rainy days per year.
Jiujiang has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The number of frost days there went from about 21 to 11 per year over the period.
The hottest day of the period reached 40.6 °C (on 10 August 1953) and the coldest -12.8 °C (on 11 January 1955).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
JiujiangJiangxi
- coords
- 29.70°, 116.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.3°C
Average daily high
20.6°C
Average daily low
14.4°C
Annual rainfall
1,853mm
Sunshine / day
7.5h
Mean relative humidity
79%
Average peak wind
12.2km/h
Seasonal range
24.6°C
Frost days (< 0 °C)
16 d/yr
Hot days (≥ 30 °C)
73 d/yr
Rainy days (≥ 1 mm)
150 d/yr
Annual snowfall
13.2 cm
Average feels-like high
21.8 °C
Average feels-like low
14.8 °C
Average peak gust
31.3 km/h
Tropical nights (≥ 20 °C)
127 d/yr
Solar radiation
14.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.32 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
40.6 °C
10 August 1953
Coldest day
-12.8 °C
11 January 1955
Wettest day
227 mm
3 August 1990
Windiest day
36.0 km/h
22 February 1974
Strongest gust
87.8 km/h
9 August 2015
Hottest feels-like
48.1 °C
2 August 2003
Coldest feels-like
-17.3 °C
11 January 1955
Snowiest day
18.8 cm
22 January 1998
Sunniest day
13.6 h
17 June 1951
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 12.3 °C | +4.7 °C | 32 mm | -31 mm |
| Feb | 9.9 °C | +0.6 °C | 44 mm | -59 mm |
| Mar | 17.1 °C | +2.8 °C | 91 mm | -77 mm |
| Apr | 25.5 °C | +4.9 °C | 184 mm | -37 mm |
| May | 27.7 °C | +2.3 °C | 224 mm | -47 mm |
| Jun | 28.9 °C | +0.2 °C | 347 mm | -9 mm |
| Jul | 34.7 °C | +2.4 °C | 55 mm | -167 mm |
| Aug | 34.9 °C | +2.9 °C | 99 mm | -61 mm |
| Sep | 30.0 °C | +2.2 °C | 194 mm | +85 mm |
| Oct | 24.1 °C | +1.8 °C | 33 mm | -36 mm |
| Nov | 18.2 °C | +1.9 °C | 34 mm | -32 mm |
| Dec | 13.4 °C | +3.2 °C | 21 mm | -26 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Jiujiang?
Jiujiang has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.3 °C and it receives 1,853 mm of precipitation per year.
What is the hottest day ever recorded in Jiujiang?
The hottest day measured in Jiujiang between 1940 and 2025 was 10 August 1953, reaching 40.6 °C.
What is the coldest day in Jiujiang?
The coldest day measured in Jiujiang between 1940 and 2025 was 11 January 1955, at -12.8 °C.
Does it snow in Jiujiang?
Yes. Jiujiang gets on average 13.2 cm of snow per year and has around 16 frost days.
Has the climate of Jiujiang warmed?
Yes: Jiujiang warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jiujiang?
The wettest day measured in Jiujiang between 1940 and 2025 was 3 August 1990, with 227 mm of rain in 24 hours.
What was the windiest day in Jiujiang?
The windiest day measured in Jiujiang between 1940 and 2025 was 22 February 1974, with winds reaching 36.0 km/h.
What is the warmest month in Jiujiang?
The warmest month in Jiujiang is July (29.2 °C on average); the coldest is January (4.6 °C).
How much does it rain in Jiujiang?
Jiujiang receives on average 1,853 mm of precipitation per year, spread over about 150 rainy days.
Is it sunny in Jiujiang?
Jiujiang gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jiujiang?
The heaviest 24-hour snowfall measured in Jiujiang between 1940 and 2025 was 22 January 1998, with 18.8 cm.
Are there tropical nights in Jiujiang?
Yes: Jiujiang has on average 127 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jiujiang?
In Jiujiang, between 1940 and 2025, the highest apparent temperature reached 48.1 °C on 2 August 2003, and the lowest was -17.3 °C on 11 January 1955.
Compare Jiujiang with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jiujiang