Wenzhou climate — normals and trends
Wenzhou (China) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 18.0 °C and it receives 1,731 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 (27.4 °C on average) and the coldest is January (8.2 °C). Rainfall peaks in June.
Wenzhou averages 3 frost days, 36 hot days (≥ 30 °C) and 170 rainy days per year.
Wenzhou has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 5 to 1 per year over the period.
The hottest day of the period reached 36.2 °C (on 21 August 2022) and the coldest -8.6 °C (on 16 January 1970).
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
WenzhouZhejiang
- coords
- 28.00°, 120.67°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.0°C
Average daily high
20.8°C
Average daily low
15.6°C
Annual rainfall
1,731mm
Sunshine / day
7.6h
Mean relative humidity
80%
Average peak wind
14.4km/h
Seasonal range
19.2°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
36 d/yr
Rainy days (≥ 1 mm)
170 d/yr
Annual snowfall
4.1 cm
Average feels-like high
22.2 °C
Average feels-like low
16.0 °C
Average peak gust
29.2 km/h
Tropical nights (≥ 20 °C)
130 d/yr
Solar radiation
14.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.67 · 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
36.2 °C
21 August 2022
Coldest day
-8.6 °C
16 January 1970
Wettest day
204 mm
19 July 2005
Windiest day
64.5 km/h
7 September 2002
Strongest gust
163.4 km/h
6 October 2013
Hottest feels-like
44.0 °C
2 August 2024
Coldest feels-like
-13.6 °C
16 January 1970
Snowiest day
11.6 cm
14 January 1989
Sunniest day
13.8 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 | 13.7 °C | +2.3 °C | 10 mm | -51 mm |
| Feb | 12.4 °C | +0.6 °C | 53 mm | -31 mm |
| Mar | 16.6 °C | +2.0 °C | 119 mm | -6 mm |
| Apr | 21.7 °C | +2.9 °C | 157 mm | +10 mm |
| May | 25.1 °C | +2.2 °C | 311 mm | +83 mm |
| Jun | 29.4 °C | +2.8 °C | 157 mm | -141 mm |
| Jul | 30.4 °C | +0.6 °C | 501 mm | +320 mm |
| Aug | 31.8 °C | +2.0 °C | 80 mm | -142 mm |
| Sep | 31.3 °C | +3.7 °C | 176 mm | -1 mm |
| Oct | 27.2 °C | +3.8 °C | 68 mm | -15 mm |
| Nov | 19.5 °C | +0.7 °C | 92 mm | +19 mm |
| Dec | 16.7 °C | +2.9 °C | 15 mm | -39 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 Wenzhou?
Wenzhou has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 18.0 °C and it receives 1,731 mm of precipitation per year.
What is the hottest day ever recorded in Wenzhou?
The hottest day measured in Wenzhou between 1940 and 2025 was 21 August 2022, reaching 36.2 °C.
What is the coldest day in Wenzhou?
The coldest day measured in Wenzhou between 1940 and 2025 was 16 January 1970, at -8.6 °C.
Does it snow in Wenzhou?
Yes. Wenzhou gets on average 4.1 cm of snow per year and has around 3 frost days.
Has the climate of Wenzhou warmed?
Yes: Wenzhou warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wenzhou?
The wettest day measured in Wenzhou between 1940 and 2025 was 19 July 2005, with 204 mm of rain in 24 hours.
What was the windiest day in Wenzhou?
The windiest day measured in Wenzhou between 1940 and 2025 was 7 September 2002, with winds reaching 64.5 km/h.
What is the warmest month in Wenzhou?
The warmest month in Wenzhou is July (27.4 °C on average); the coldest is January (8.2 °C).
How much does it rain in Wenzhou?
Wenzhou receives on average 1,731 mm of precipitation per year, spread over about 170 rainy days.
Is it sunny in Wenzhou?
Wenzhou gets on average 7.6 hours of sunshine per day, roughly 2,774 hours per year over 1940-2025.
What is the biggest single-day snowfall in Wenzhou?
The heaviest 24-hour snowfall measured in Wenzhou between 1940 and 2025 was 14 January 1989, with 11.6 cm.
Are there tropical nights in Wenzhou?
Yes: Wenzhou has on average 130 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wenzhou?
In Wenzhou, between 1940 and 2025, the highest apparent temperature reached 44.0 °C on 2 August 2024, and the lowest was -13.6 °C on 16 January 1970.
Compare Wenzhou with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wenzhou