Gaogou climate — normals and trends
Gaogou (China) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 14.5 °C and it receives 1,047 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 (27.1 °C on average) and the coldest is January (0.7 °C). Rainfall peaks in July.
Gaogou averages 73 frost days, 56 hot days (≥ 30 °C) and 97 rainy days per year.
Gaogou has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 85 to 61 per year over the period.
The hottest day of the period reached 40.4 °C (on 11 August 1946) and the coldest -21.6 °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
GaogouJiangsu
- coords
- 34.02°, 119.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.5°C
Average daily high
19.2°C
Average daily low
10.3°C
Annual rainfall
1,047mm
Sunshine / day
8.4h
Mean relative humidity
72%
Average peak wind
15.4km/h
Seasonal range
26.4°C
Frost days (< 0 °C)
73 d/yr
Hot days (≥ 30 °C)
56 d/yr
Rainy days (≥ 1 mm)
97 d/yr
Annual snowfall
10.5 cm
Average feels-like high
18.9 °C
Average feels-like low
9.2 °C
Average peak gust
31.7 km/h
Tropical nights (≥ 20 °C)
82 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.34 · 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
40.4 °C
11 August 1946
Coldest day
-21.6 °C
11 January 1955
Wettest day
182 mm
5 July 2018
Windiest day
45.7 km/h
26 April 1983
Strongest gust
92.9 km/h
2 August 1956
Hottest feels-like
46.4 °C
6 July 2025
Coldest feels-like
-26.8 °C
11 January 1955
Snowiest day
16.2 cm
16 February 1981
Sunniest day
14.0 h
27 May 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 | 8.9 °C | +3.5 °C | 3 mm | -20 mm |
| Feb | 9.1 °C | +1.6 °C | 7 mm | -25 mm |
| Mar | 16.1 °C | +3.1 °C | 45 mm | -3 mm |
| Apr | 24.0 °C | +4.5 °C | 19 mm | -44 mm |
| May | 27.4 °C | +2.4 °C | 42 mm | -42 mm |
| Jun | 30.9 °C | +1.8 °C | 253 mm | +122 mm |
| Jul | 34.3 °C | +3.6 °C | 51 mm | -224 mm |
| Aug | 32.6 °C | +2.2 °C | 203 mm | +38 mm |
| Sep | 27.3 °C | +1.1 °C | 202 mm | +83 mm |
| Oct | 21.4 °C | 0.0 °C | 115 mm | +66 mm |
| Nov | 17.2 °C | +2.5 °C | 13 mm | -26 mm |
| Dec | 10.6 °C | +2.7 °C | 12 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 Gaogou?
Gaogou has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 14.5 °C and it receives 1,047 mm of precipitation per year.
What is the hottest day ever recorded in Gaogou?
The hottest day measured in Gaogou between 1940 and 2025 was 11 August 1946, reaching 40.4 °C.
What is the coldest day in Gaogou?
The coldest day measured in Gaogou between 1940 and 2025 was 11 January 1955, at -21.6 °C.
Does it snow in Gaogou?
Yes. Gaogou gets on average 10.5 cm of snow per year and has around 73 frost days.
Has the climate of Gaogou warmed?
Yes: Gaogou warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gaogou?
The wettest day measured in Gaogou between 1940 and 2025 was 5 July 2018, with 182 mm of rain in 24 hours.
What was the windiest day in Gaogou?
The windiest day measured in Gaogou between 1940 and 2025 was 26 April 1983, with winds reaching 45.7 km/h.
What is the warmest month in Gaogou?
The warmest month in Gaogou is July (27.1 °C on average); the coldest is January (0.7 °C).
How much does it rain in Gaogou?
Gaogou receives on average 1,047 mm of precipitation per year, spread over about 97 rainy days.
Is it sunny in Gaogou?
Gaogou gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gaogou?
The heaviest 24-hour snowfall measured in Gaogou between 1940 and 2025 was 16 February 1981, with 16.2 cm.
Are there tropical nights in Gaogou?
Yes: Gaogou has on average 82 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gaogou?
In Gaogou, between 1940 and 2025, the highest apparent temperature reached 46.4 °C on 6 July 2025, and the lowest was -26.8 °C on 11 January 1955.
Compare Gaogou with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gaogou