Cixi climate — normals and trends
Cixi (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 17.2 °C and it receives 1,435 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 (28.8 °C on average) and the coldest is January (5.5 °C). Rainfall peaks in June.
Cixi averages 15 frost days, 63 hot days (≥ 30 °C) and 137 rainy days per year.
Cixi has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 22 to 8 per year over the period.
The hottest day of the period reached 41.1 °C (on 20 July 2009) and the coldest -8.6 °C (on 13 December 1985).
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
CixiZhejiang
- coords
- 30.18°, 121.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.2°C
Average daily high
20.4°C
Average daily low
14.3°C
Annual rainfall
1,435mm
Sunshine / day
7.8h
Mean relative humidity
78%
Average peak wind
18.3km/h
Seasonal range
23.3°C
Frost days (< 0 °C)
15 d/yr
Hot days (≥ 30 °C)
63 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
5.9 cm
Average feels-like high
21.1 °C
Average feels-like low
13.9 °C
Average peak gust
34.9 km/h
Tropical nights (≥ 20 °C)
119 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.49 · 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
41.1 °C
20 July 2009
Coldest day
-8.6 °C
13 December 1985
Wettest day
165 mm
20 August 2014
Windiest day
67.0 km/h
17 August 1953
Strongest gust
160.2 km/h
2 August 1956
Hottest feels-like
47.8 °C
13 July 2022
Coldest feels-like
-14.3 °C
24 January 2016
Snowiest day
12.1 cm
17 February 1964
Sunniest day
13.9 h
3 July 2025
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 | 11.6 °C | +3.1 °C | 16 mm | -44 mm |
| Feb | 9.9 °C | +0.4 °C | 40 mm | -35 mm |
| Mar | 17.6 °C | +4.0 °C | 52 mm | -57 mm |
| Apr | 24.7 °C | +5.5 °C | 49 mm | -82 mm |
| May | 26.8 °C | +3.0 °C | 232 mm | +57 mm |
| Jun | 29.8 °C | +2.4 °C | 393 mm | +112 mm |
| Jul | 32.4 °C | 0.0 °C | 283 mm | +141 mm |
| Aug | 35.7 °C | +3.8 °C | 27 mm | -108 mm |
| Sep | 33.5 °C | +5.8 °C | 88 mm | -52 mm |
| Oct | 27.3 °C | +4.7 °C | 39 mm | -38 mm |
| Nov | 18.6 °C | +1.3 °C | 40 mm | -20 mm |
| Dec | 14.8 °C | +3.5 °C | 12 mm | -36 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 Cixi?
Cixi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 17.2 °C and it receives 1,435 mm of precipitation per year.
What is the hottest day ever recorded in Cixi?
The hottest day measured in Cixi between 1940 and 2025 was 20 July 2009, reaching 41.1 °C.
What is the coldest day in Cixi?
The coldest day measured in Cixi between 1940 and 2025 was 13 December 1985, at -8.6 °C.
Does it snow in Cixi?
Yes. Cixi gets on average 5.9 cm of snow per year and has around 15 frost days.
Has the climate of Cixi warmed?
Yes: Cixi warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Cixi?
The wettest day measured in Cixi between 1940 and 2025 was 20 August 2014, with 165 mm of rain in 24 hours.
What was the windiest day in Cixi?
The windiest day measured in Cixi between 1940 and 2025 was 17 August 1953, with winds reaching 67.0 km/h.
What is the warmest month in Cixi?
The warmest month in Cixi is July (28.8 °C on average); the coldest is January (5.5 °C).
How much does it rain in Cixi?
Cixi receives on average 1,435 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Cixi?
Cixi gets on average 7.8 hours of sunshine per day, roughly 2,847 hours per year over 1940-2025.
What is the biggest single-day snowfall in Cixi?
The heaviest 24-hour snowfall measured in Cixi between 1940 and 2025 was 17 February 1964, with 12.1 cm.
Are there tropical nights in Cixi?
Yes: Cixi has on average 119 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Cixi?
In Cixi, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 13 July 2022, and the lowest was -14.3 °C on 24 January 2016.
Compare Cixi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Cixi