Hedong climate — normals and trends
Hedong (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.4 °C and it receives 1,275 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 (28.3 °C on average) and the coldest is January (12.6 °C). Rainfall peaks in June.
Hedong averages 0 frost days, 117 hot days (≥ 30 °C) and 144 rainy days per year.
Hedong has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.2 °C (on 5 July 2002) and the coldest -2.6 °C (on 25 January 1940).
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
HedongGuangdong
- coords
- 23.92°, 115.78°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.4°C
Average daily high
25.8°C
Average daily low
17.8°C
Annual rainfall
1,275mm
Sunshine / day
8.0h
Mean relative humidity
75%
Average peak wind
11.5km/h
Seasonal range
15.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
117 d/yr
Rainy days (≥ 1 mm)
144 d/yr
Annual snowfall
0.0 cm
Average feels-like high
27.8 °C
Average feels-like low
19.4 °C
Average peak gust
28.5 km/h
Tropical nights (≥ 20 °C)
173 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.59 · 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
40.2 °C
5 July 2002
Coldest day
-2.6 °C
25 January 1940
Wettest day
255 mm
14 September 1970
Windiest day
48.0 km/h
28 July 1969
Strongest gust
126.0 km/h
20 July 1988
Hottest feels-like
45.7 °C
4 August 2024
Coldest feels-like
-7.5 °C
16 January 1967
Snowiest day
0.9 cm
16 January 1993
Sunniest day
13.1 h
13 June 2014
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 | 19.8 °C | +2.3 °C | 3 mm | -32 mm |
| Feb | 19.4 °C | +0.9 °C | 24 mm | -35 mm |
| Mar | 23.0 °C | +0.9 °C | 83 mm | -6 mm |
| Apr | 28.2 °C | +2.4 °C | 79 mm | -60 mm |
| May | 29.5 °C | +0.8 °C | 166 mm | -35 mm |
| Jun | 32.2 °C | +1.7 °C | 185 mm | -33 mm |
| Jul | 33.1 °C | +0.7 °C | 268 mm | +127 mm |
| Aug | 32.2 °C | +0.1 °C | 256 mm | +93 mm |
| Sep | 32.2 °C | +1.3 °C | 173 mm | +56 mm |
| Oct | 30.1 °C | +2.0 °C | 27 mm | -19 mm |
| Nov | 24.4 °C | +0.4 °C | 11 mm | -27 mm |
| Dec | 22.6 °C | +3.3 °C | 16 mm | -17 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 Hedong?
Hedong has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 1,275 mm of precipitation per year.
What is the hottest day ever recorded in Hedong?
The hottest day measured in Hedong between 1940 and 2025 was 5 July 2002, reaching 40.2 °C.
What is the coldest day in Hedong?
The coldest day measured in Hedong between 1940 and 2025 was 25 January 1940, at -2.6 °C.
Does it snow in Hedong?
Almost never: Hedong sees virtually no snow, with about 0 frost days per year.
Has the climate of Hedong warmed?
Yes: Hedong warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hedong?
The wettest day measured in Hedong between 1940 and 2025 was 14 September 1970, with 255 mm of rain in 24 hours.
What was the windiest day in Hedong?
The windiest day measured in Hedong between 1940 and 2025 was 28 July 1969, with winds reaching 48.0 km/h.
What is the warmest month in Hedong?
The warmest month in Hedong is July (28.3 °C on average); the coldest is January (12.6 °C).
How much does it rain in Hedong?
Hedong receives on average 1,275 mm of precipitation per year, spread over about 144 rainy days.
Is it sunny in Hedong?
Hedong 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 Hedong?
The heaviest 24-hour snowfall measured in Hedong between 1940 and 2025 was 16 January 1993, with 0.9 cm.
Are there tropical nights in Hedong?
Yes: Hedong has on average 173 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hedong?
In Hedong, between 1940 and 2025, the highest apparent temperature reached 45.7 °C on 4 August 2024, and the lowest was -7.5 °C on 16 January 1967.
Compare Hedong with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hedong