Wenzhou climate

Name: Wenzhou
Address: CN

Wenzhou is warmest in July, with average highs of 30 °C, and coldest in January, when nights average 4.5 °C. June is the wettest month (287 mm) and December the driest (62 mm). Figures are 1991–2020 climate normals.

Across a full year Wenzhou averages 1,749 mm of rain, 138 days above 25 °C and 7 days below freezing.

China · population 2,650,000 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 30 °C
Coldest month January 4.5 °C
Driest month December 62 mm
Wettest month June 287 mm
Least cloud October 49 % cloud
Hottest on record July 37 °C
Coldest on record December -7.9 °C
Warmest sea August 28 °C

What to expectWenzhou through the year

Wenzhou has a clear annual cycle: average daily highs run from 12 °C in January to 30 °C in July, a swing of 19 °C in mean temperature across the year.

Counted across a normal year, 138 days a year reach 25 °C, 48 of them reach 30 °C, 7 nights drop below freezing. The warmest reading in the 1991–2020 record is 37 °C, in July.

Rain is strongly seasonal. June averages 287 mm against 62 mm in December — 4.6 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Wenzhou is warmest in August at 28 °C and coldest in February at 13 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	12.0 °C	71 mm	59 %
February	13.1 °C	82 mm	65 %
March	15.9 °C	132 mm	70 %
April	20.3 °C	132 mm	75 %
May	24.3 °C	192 mm	78 %
June	27.4 °C	287 mm	88 %
July	30.5 °C	194 mm	74 %
August	30.3 °C	255 mm	68 %
September	27.8 °C	177 mm	62 %
October	23.9 °C	83 mm	49 %
November	19.3 °C	81 mm	56 %
December	14.2 °C	62 mm	50 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	12.0 °C	4.5 °C	8.2 °C	22.8 °C	-7.0 °C	0	0	3
February	13.1 °C	5.8 °C	9.3 °C	25.7 °C	-4.9 °C	0	0	1
March	15.9 °C	9.1 °C	12.2 °C	25.4 °C	-1.5 °C	0	0	0
April	20.3 °C	13.7 °C	16.7 °C	30.1 °C	3.1 °C	3	0	0
May	24.3 °C	18.5 °C	21.1 °C	34.6 °C	9.3 °C	12	1	0
June	27.4 °C	22.6 °C	24.7 °C	35.6 °C	13.7 °C	24	6	0
July	30.5 °C	25.4 °C	27.5 °C	37.4 °C	19.3 °C	31	19	0
August	30.3 °C	25.3 °C	27.4 °C	36.7 °C	19.2 °C	31	17	0
September	27.8 °C	22.1 °C	24.6 °C	35.6 °C	12.0 °C	26	5	0
October	23.9 °C	16.7 °C	20.1 °C	32.7 °C	6.5 °C	10	0	0
November	19.3 °C	12.0 °C	15.5 °C	30.2 °C	0.8 °C	1	0	0
December	14.2 °C	6.1 °C	10.1 °C	26.1 °C	-7.9 °C	0	0	2

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	71 mm	10	11 h/day	59 %	74 %	14 km/h	14.3 °C
February	82 mm	11	11 h/day	65 %	78 %	14 km/h	13.3 °C
March	132 mm	15	12 h/day	70 %	80 %	14 km/h	13.9 °C
April	132 mm	15	13 h/day	75 %	83 %	13 km/h	16.3 °C
May	192 mm	15	14 h/day	78 %	86 %	13 km/h	20.6 °C
June	287 mm	18	14 h/day	88 %	90 %	14 km/h	24.2 °C
July	194 mm	17	14 h/day	74 %	89 %	16 km/h	27.0 °C
August	255 mm	20	13 h/day	68 %	87 %	16 km/h	28.1 °C
September	177 mm	14	12 h/day	62 %	82 %	15 km/h	26.9 °C
October	83 mm	7	12 h/day	49 %	77 %	15 km/h	23.2 °C
November	81 mm	9	11 h/day	56 %	77 %	14 km/h	19.6 °C
December	62 mm	8	10 h/day	50 %	73 %	14 km/h	16.2 °C

How Wenzhou compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Wenzhou	30 °C	4.5 °C	1,749 mm	138
Rui’an · China	30 °C	5.4 °C	1,672 mm	130
Fuding · China	32 °C	5.3 °C	1,808 mm	156
Lishui · China	33 °C	3.0 °C	1,429 mm	163
Taizhou · China	32 °C	3.5 °C	1,540 mm	143
Guli · China	33 °C	2.1 °C	1,537 mm	158
Fu’an · China	33 °C	5.6 °C	1,601 mm	176

Planning a trip? See the best time to visit Wenzhou.

QuestionsCommon questions about Wenzhou’s climate

When is the best time to visit Wenzhou?

That depends on what you want, so the honest answer is a comparison rather than a single month. April, May, October sit closest to 20 °C on average, July is the warmest month and December the driest. The month-by-month table above has the full picture.

How hot does Wenzhou get?

In July, the warmest month, daily highs average 30 °C. About 48 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 4.5 °C in January, the coldest month. A normal year has 7 nights below freezing.

Which month is wettest in Wenzhou?

June, averaging 287 mm over 18 days with rain. The driest month is December with 62 mm. The year as a whole averages 1,749 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Wenzhou rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.