Gunan climate — normals and trends
Gunan (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.1 °C and it receives 1,443 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 (27.0 °C on average) and the coldest is January (6.6 °C). Rainfall peaks in June.
Gunan averages 5 frost days, 60 hot days (≥ 30 °C) and 191 rainy days per year.
Gunan has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The number of frost days there went from about 8 to 2 per year over the period.
The hottest day of the period reached 41.8 °C (on 23 July 1961) and the coldest -8.9 °C (on 16 December 1975).
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
GunanChongqing Municipality
- coords
- 29.02°, 106.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.1°C
Average daily high
20.5°C
Average daily low
14.1°C
Annual rainfall
1,443mm
Sunshine / day
5.7h
Mean relative humidity
78%
Average peak wind
8.7km/h
Seasonal range
20.4°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
60 d/yr
Rainy days (≥ 1 mm)
191 d/yr
Annual snowfall
6.2 cm
Average feels-like high
21.5 °C
Average feels-like low
14.5 °C
Average peak gust
24.6 km/h
Tropical nights (≥ 20 °C)
98 d/yr
Solar radiation
11.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.26 · 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
41.8 °C
23 July 1961
Coldest day
-8.9 °C
16 December 1975
Wettest day
120 mm
22 July 1999
Windiest day
47.9 km/h
28 May 1946
Strongest gust
112.3 km/h
28 June 1946
Hottest feels-like
46.1 °C
23 July 1961
Coldest feels-like
-13.3 °C
16 December 1975
Snowiest day
11.3 cm
27 December 1991
Sunniest day
13.9 h
21 June 1944
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 | 11.4 °C | +2.2 °C | 77 mm | +25 mm |
| Feb | 10.9 °C | -0.5 °C | 51 mm | -1 mm |
| Mar | 16.0 °C | -0.4 °C | 88 mm | -1 mm |
| Apr | 23.7 °C | +2.3 °C | 92 mm | -40 mm |
| May | 26.2 °C | +1.5 °C | 161 mm | -23 mm |
| Jun | 28.5 °C | +1.3 °C | 194 mm | +4 mm |
| Jul | 32.9 °C | +2.0 °C | 239 mm | +72 mm |
| Aug | 33.3 °C | +2.2 °C | 76 mm | -76 mm |
| Sep | 29.8 °C | +3.2 °C | 93 mm | -42 mm |
| Oct | 23.5 °C | +3.0 °C | 146 mm | +12 mm |
| Nov | 15.7 °C | 0.0 °C | 91 mm | -2 mm |
| Dec | 12.5 °C | +1.9 °C | 58 mm | -4 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 Gunan?
Gunan has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.1 °C and it receives 1,443 mm of precipitation per year.
What is the hottest day ever recorded in Gunan?
The hottest day measured in Gunan between 1940 and 2025 was 23 July 1961, reaching 41.8 °C.
What is the coldest day in Gunan?
The coldest day measured in Gunan between 1940 and 2025 was 16 December 1975, at -8.9 °C.
Does it snow in Gunan?
Yes. Gunan gets on average 6.2 cm of snow per year and has around 5 frost days.
Has the climate of Gunan warmed?
Yes: Gunan warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gunan?
The wettest day measured in Gunan between 1940 and 2025 was 22 July 1999, with 120 mm of rain in 24 hours.
What was the windiest day in Gunan?
The windiest day measured in Gunan between 1940 and 2025 was 28 May 1946, with winds reaching 47.9 km/h.
What is the warmest month in Gunan?
The warmest month in Gunan is July (27.0 °C on average); the coldest is January (6.6 °C).
How much does it rain in Gunan?
Gunan receives on average 1,443 mm of precipitation per year, spread over about 191 rainy days.
Is it sunny in Gunan?
Gunan gets on average 5.7 hours of sunshine per day, roughly 2,081 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gunan?
The heaviest 24-hour snowfall measured in Gunan between 1940 and 2025 was 27 December 1991, with 11.3 cm.
Are there tropical nights in Gunan?
Yes: Gunan has on average 98 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gunan?
In Gunan, between 1940 and 2025, the highest apparent temperature reached 46.1 °C on 23 July 1961, and the lowest was -13.3 °C on 16 December 1975.
Compare Gunan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gunan