Huainan climate — normals and trends
Huainan (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.7 °C and it receives 1,083 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 (28.1 °C on average) and the coldest is January (1.9 °C). Rainfall peaks in July.
Huainan averages 50 frost days, 69 hot days (≥ 30 °C) and 104 rainy days per year.
Huainan 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 60 to 40 per year over the period.
The hottest day of the period reached 40.7 °C (on 11 August 1946) and the coldest -23.6 °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
HuainanAnhui
- coords
- 32.63°, 117.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.7°C
Average daily high
20.0°C
Average daily low
11.9°C
Annual rainfall
1,083mm
Sunshine / day
8.0h
Mean relative humidity
74%
Average peak wind
14.6km/h
Seasonal range
26.2°C
Frost days (< 0 °C)
50 d/yr
Hot days (≥ 30 °C)
69 d/yr
Rainy days (≥ 1 mm)
104 d/yr
Annual snowfall
16.7 cm
Average feels-like high
20.1 °C
Average feels-like low
11.3 °C
Average peak gust
29.9 km/h
Tropical nights (≥ 20 °C)
101 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.23 · 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
40.7 °C
11 August 1946
Coldest day
-23.6 °C
11 January 1955
Wettest day
168 mm
10 July 1981
Windiest day
44.2 km/h
17 August 2018
Strongest gust
91.4 km/h
17 August 2018
Hottest feels-like
46.6 °C
2 August 2003
Coldest feels-like
-28.6 °C
11 January 1955
Snowiest day
18.8 cm
24 December 1991
Sunniest day
13.9 h
6 June 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 | 9.9 °C | +3.8 °C | 37 mm | +7 mm |
| Feb | 9.9 °C | +1.4 °C | 7 mm | -34 mm |
| Mar | 17.0 °C | +3.1 °C | 50 mm | -16 mm |
| Apr | 25.7 °C | +5.2 °C | 38 mm | -38 mm |
| May | 27.8 °C | +2.0 °C | 106 mm | +2 mm |
| Jun | 29.8 °C | 0.0 °C | 273 mm | +118 mm |
| Jul | 34.3 °C | +2.7 °C | 50 mm | -196 mm |
| Aug | 32.9 °C | +1.8 °C | 218 mm | +76 mm |
| Sep | 26.8 °C | +0.1 °C | 185 mm | +85 mm |
| Oct | 20.9 °C | -0.8 °C | 85 mm | +30 mm |
| Nov | 17.9 °C | +2.7 °C | 18 mm | -24 mm |
| Dec | 11.6 °C | +2.9 °C | 15 mm | -10 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 Huainan?
Huainan has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.7 °C and it receives 1,083 mm of precipitation per year.
What is the hottest day ever recorded in Huainan?
The hottest day measured in Huainan between 1940 and 2025 was 11 August 1946, reaching 40.7 °C.
What is the coldest day in Huainan?
The coldest day measured in Huainan between 1940 and 2025 was 11 January 1955, at -23.6 °C.
Does it snow in Huainan?
Yes. Huainan gets on average 16.7 cm of snow per year and has around 50 frost days.
Has the climate of Huainan warmed?
Yes: Huainan warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Huainan?
The wettest day measured in Huainan between 1940 and 2025 was 10 July 1981, with 168 mm of rain in 24 hours.
What was the windiest day in Huainan?
The windiest day measured in Huainan between 1940 and 2025 was 17 August 2018, with winds reaching 44.2 km/h.
What is the warmest month in Huainan?
The warmest month in Huainan is July (28.1 °C on average); the coldest is January (1.9 °C).
How much does it rain in Huainan?
Huainan receives on average 1,083 mm of precipitation per year, spread over about 104 rainy days.
Is it sunny in Huainan?
Huainan gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.
What is the biggest single-day snowfall in Huainan?
The heaviest 24-hour snowfall measured in Huainan between 1940 and 2025 was 24 December 1991, with 18.8 cm.
Are there tropical nights in Huainan?
Yes: Huainan has on average 101 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Huainan?
In Huainan, between 1940 and 2025, the highest apparent temperature reached 46.6 °C on 2 August 2003, and the lowest was -28.6 °C on 11 January 1955.
Compare Huainan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Huainan