Suizhou climate — normals and trends
Suizhou (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 16.0 °C and it receives 1,217 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 (27.8 °C on average) and the coldest is January (2.7 °C). Rainfall peaks in July.
Suizhou averages 44 frost days, 70 hot days (≥ 30 °C) and 114 rainy days per year.
Suizhou has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The number of frost days there went from about 55 to 33 per year over the period.
The hottest day of the period reached 40.3 °C (on 23 August 1959) and the coldest -17.4 °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
SuizhouHubei
- coords
- 31.71°, 113.36°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.0°C
Average daily high
20.3°C
Average daily low
12.1°C
Annual rainfall
1,217mm
Sunshine / day
7.9h
Mean relative humidity
74%
Average peak wind
13.6km/h
Seasonal range
25.1°C
Frost days (< 0 °C)
44 d/yr
Hot days (≥ 30 °C)
70 d/yr
Rainy days (≥ 1 mm)
114 d/yr
Annual snowfall
19.1 cm
Average feels-like high
20.6 °C
Average feels-like low
11.6 °C
Average peak gust
28.9 km/h
Tropical nights (≥ 20 °C)
98 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.21 · 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
40.3 °C
23 August 1959
Coldest day
-17.4 °C
11 January 1955
Wettest day
215 mm
13 July 2007
Windiest day
42.2 km/h
5 June 1946
Strongest gust
79.6 km/h
23 March 1977
Hottest feels-like
46.7 °C
15 July 2002
Coldest feels-like
-22.4 °C
16 January 1955
Snowiest day
20.8 cm
1 February 1943
Sunniest day
13.4 h
20 June 1943
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 | 11.2 °C | +4.0 °C | 54 mm | +25 mm |
| Feb | 10.8 °C | +1.2 °C | 6 mm | -33 mm |
| Mar | 17.3 °C | +2.5 °C | 63 mm | -6 mm |
| Apr | 25.7 °C | +4.7 °C | 70 mm | -34 mm |
| May | 28.1 °C | +2.4 °C | 180 mm | +39 mm |
| Jun | 29.2 °C | -0.2 °C | 249 mm | +76 mm |
| Jul | 34.3 °C | +2.9 °C | 60 mm | -184 mm |
| Aug | 33.2 °C | +2.0 °C | 184 mm | +20 mm |
| Sep | 25.8 °C | -1.2 °C | 250 mm | +143 mm |
| Oct | 19.9 °C | -1.8 °C | 124 mm | +53 mm |
| Nov | 18.3 °C | +2.7 °C | 27 mm | -23 mm |
| Dec | 12.8 °C | +3.2 °C | 30 mm | +5 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 Suizhou?
Suizhou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 16.0 °C and it receives 1,217 mm of precipitation per year.
What is the hottest day ever recorded in Suizhou?
The hottest day measured in Suizhou between 1940 and 2025 was 23 August 1959, reaching 40.3 °C.
What is the coldest day in Suizhou?
The coldest day measured in Suizhou between 1940 and 2025 was 11 January 1955, at -17.4 °C.
Does it snow in Suizhou?
Yes. Suizhou gets on average 19.1 cm of snow per year and has around 44 frost days.
Has the climate of Suizhou warmed?
Yes: Suizhou warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Suizhou?
The wettest day measured in Suizhou between 1940 and 2025 was 13 July 2007, with 215 mm of rain in 24 hours.
What was the windiest day in Suizhou?
The windiest day measured in Suizhou between 1940 and 2025 was 5 June 1946, with winds reaching 42.2 km/h.
What is the warmest month in Suizhou?
The warmest month in Suizhou is July (27.8 °C on average); the coldest is January (2.7 °C).
How much does it rain in Suizhou?
Suizhou receives on average 1,217 mm of precipitation per year, spread over about 114 rainy days.
Is it sunny in Suizhou?
Suizhou gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.
What is the biggest single-day snowfall in Suizhou?
The heaviest 24-hour snowfall measured in Suizhou between 1940 and 2025 was 1 February 1943, with 20.8 cm.
Are there tropical nights in Suizhou?
Yes: Suizhou has on average 98 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Suizhou?
In Suizhou, between 1940 and 2025, the highest apparent temperature reached 46.7 °C on 15 July 2002, and the lowest was -22.4 °C on 16 January 1955.
Compare Suizhou with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Suizhou