Hongjiang climate — normals and trends
Hongjiang (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.0 °C and it receives 1,794 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 (27.5 °C on average) and the coldest is January (5.4 °C). Rainfall peaks in May.
Hongjiang averages 14 frost days, 73 hot days (≥ 30 °C) and 185 rainy days per year.
Hongjiang has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 19 to 9 per year over the period.
The hottest day of the period reached 39.8 °C (on 13 August 1953) and the coldest -12.6 °C (on 30 January 1977).
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
HongjiangHunan
- coords
- 27.11°, 110.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.0°C
Average daily high
20.8°C
Average daily low
13.8°C
Annual rainfall
1,794mm
Sunshine / day
6.3h
Mean relative humidity
79%
Average peak wind
10.8km/h
Seasonal range
22.1°C
Frost days (< 0 °C)
14 d/yr
Hot days (≥ 30 °C)
73 d/yr
Rainy days (≥ 1 mm)
185 d/yr
Annual snowfall
15.1 cm
Average feels-like high
21.6 °C
Average feels-like low
14.2 °C
Average peak gust
29.4 km/h
Tropical nights (≥ 20 °C)
113 d/yr
Solar radiation
11.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °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
39.8 °C
13 August 1953
Coldest day
-12.6 °C
30 January 1977
Wettest day
192 mm
19 June 1955
Windiest day
37.7 km/h
14 June 1946
Strongest gust
94.7 km/h
6 July 1946
Hottest feels-like
44.4 °C
15 July 2002
Coldest feels-like
-16.9 °C
30 January 1977
Snowiest day
15.9 cm
8 February 1977
Sunniest day
13.3 h
5 July 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 13.2 °C | +4.6 °C | 39 mm | -45 mm |
| Feb | 9.0 °C | -1.1 °C | 119 mm | +4 mm |
| Mar | 17.0 °C | +1.8 °C | 168 mm | -16 mm |
| Apr | 24.9 °C | +3.8 °C | 210 mm | -39 mm |
| May | 26.8 °C | +1.4 °C | 299 mm | +31 mm |
| Jun | 28.9 °C | +0.5 °C | 348 mm | +83 mm |
| Jul | 33.2 °C | +1.7 °C | 174 mm | +20 mm |
| Aug | 32.8 °C | +1.6 °C | 121 mm | -23 mm |
| Sep | 29.7 °C | +1.6 °C | 93 mm | +5 mm |
| Oct | 24.7 °C | +2.3 °C | 36 mm | -63 mm |
| Nov | 18.0 °C | +1.1 °C | 111 mm | +28 mm |
| Dec | 14.5 °C | +3.3 °C | 33 mm | -29 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 Hongjiang?
Hongjiang has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.0 °C and it receives 1,794 mm of precipitation per year.
What is the hottest day ever recorded in Hongjiang?
The hottest day measured in Hongjiang between 1940 and 2025 was 13 August 1953, reaching 39.8 °C.
What is the coldest day in Hongjiang?
The coldest day measured in Hongjiang between 1940 and 2025 was 30 January 1977, at -12.6 °C.
Does it snow in Hongjiang?
Yes. Hongjiang gets on average 15.1 cm of snow per year and has around 14 frost days.
Has the climate of Hongjiang warmed?
Yes: Hongjiang warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hongjiang?
The wettest day measured in Hongjiang between 1940 and 2025 was 19 June 1955, with 192 mm of rain in 24 hours.
What was the windiest day in Hongjiang?
The windiest day measured in Hongjiang between 1940 and 2025 was 14 June 1946, with winds reaching 37.7 km/h.
What is the warmest month in Hongjiang?
The warmest month in Hongjiang is July (27.5 °C on average); the coldest is January (5.4 °C).
How much does it rain in Hongjiang?
Hongjiang receives on average 1,794 mm of precipitation per year, spread over about 185 rainy days.
Is it sunny in Hongjiang?
Hongjiang gets on average 6.3 hours of sunshine per day, roughly 2,300 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hongjiang?
The heaviest 24-hour snowfall measured in Hongjiang between 1940 and 2025 was 8 February 1977, with 15.9 cm.
Are there tropical nights in Hongjiang?
Yes: Hongjiang has on average 113 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hongjiang?
In Hongjiang, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 15 July 2002, and the lowest was -16.9 °C on 30 January 1977.
Compare Hongjiang with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hongjiang