Guiren climate — normals and trends
Guiren (China) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 14.8 °C and it receives 1,051 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 (0.7 °C). Rainfall peaks in July.
Guiren averages 69 frost days, 60 hot days (≥ 30 °C) and 98 rainy days per year.
Guiren has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 81 to 57 per year over the period.
The hottest day of the period reached 40.5 °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
GuirenJiangsu
- coords
- 33.67°, 118.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.8°C
Average daily high
19.4°C
Average daily low
10.7°C
Annual rainfall
1,051mm
Sunshine / day
8.5h
Mean relative humidity
72%
Average peak wind
15.0km/h
Seasonal range
26.8°C
Frost days (< 0 °C)
69 d/yr
Hot days (≥ 30 °C)
60 d/yr
Rainy days (≥ 1 mm)
98 d/yr
Annual snowfall
13.9 cm
Average feels-like high
19.2 °C
Average feels-like low
9.8 °C
Average peak gust
31.2 km/h
Tropical nights (≥ 20 °C)
89 d/yr
Solar radiation
15.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.29 · 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
40.5 °C
11 August 1946
Coldest day
-23.6 °C
11 January 1955
Wettest day
213 mm
5 July 2018
Windiest day
43.9 km/h
9 July 1949
Strongest gust
90.4 km/h
2 August 1956
Hottest feels-like
46.2 °C
2 August 2003
Coldest feels-like
-28.5 °C
11 January 1955
Snowiest day
15.6 cm
24 December 1991
Sunniest day
14.0 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 | 9.1 °C | +3.8 °C | 6 mm | -18 mm |
| Feb | 9.5 °C | +1.8 °C | 8 mm | -23 mm |
| Mar | 16.6 °C | +3.4 °C | 56 mm | +7 mm |
| Apr | 24.6 °C | +4.7 °C | 29 mm | -33 mm |
| May | 27.4 °C | +2.1 °C | 42 mm | -44 mm |
| Jun | 31.0 °C | +1.5 °C | 249 mm | +117 mm |
| Jul | 34.1 °C | +3.1 °C | 52 mm | -230 mm |
| Aug | 32.7 °C | +2.1 °C | 230 mm | +62 mm |
| Sep | 26.9 °C | +0.5 °C | 188 mm | +76 mm |
| Oct | 20.9 °C | -0.5 °C | 111 mm | +62 mm |
| Nov | 17.3 °C | +2.7 °C | 12 mm | -25 mm |
| Dec | 10.7 °C | +2.9 °C | 13 mm | -8 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 Guiren?
Guiren has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 14.8 °C and it receives 1,051 mm of precipitation per year.
What is the hottest day ever recorded in Guiren?
The hottest day measured in Guiren between 1940 and 2025 was 11 August 1946, reaching 40.5 °C.
What is the coldest day in Guiren?
The coldest day measured in Guiren between 1940 and 2025 was 11 January 1955, at -23.6 °C.
Does it snow in Guiren?
Yes. Guiren gets on average 13.9 cm of snow per year and has around 69 frost days.
Has the climate of Guiren warmed?
Yes: Guiren warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Guiren?
The wettest day measured in Guiren between 1940 and 2025 was 5 July 2018, with 213 mm of rain in 24 hours.
What was the windiest day in Guiren?
The windiest day measured in Guiren between 1940 and 2025 was 9 July 1949, with winds reaching 43.9 km/h.
What is the warmest month in Guiren?
The warmest month in Guiren is July (27.5 °C on average); the coldest is January (0.7 °C).
How much does it rain in Guiren?
Guiren receives on average 1,051 mm of precipitation per year, spread over about 98 rainy days.
Is it sunny in Guiren?
Guiren gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Guiren?
The heaviest 24-hour snowfall measured in Guiren between 1940 and 2025 was 24 December 1991, with 15.6 cm.
Are there tropical nights in Guiren?
Yes: Guiren has on average 89 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Guiren?
In Guiren, between 1940 and 2025, the highest apparent temperature reached 46.2 °C on 2 August 2003, and the lowest was -28.5 °C on 11 January 1955.
Compare Guiren with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Guiren