Climate averages 1991–2020

Wenzhou weather
in September.

A warm, wet month: the 3rd warmest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 27.7°C Daytime mean, September
Average low 22.2°C Night-time mean, September
Rainfall 171 mm 14 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Wenzhou · average highYear overview

September is a warm month in Wenzhou: daytime highs average 27.7°C and nights cool to about 22.2°C. By daytime temperature it is the 3rd warmest of the 12 months.

Expect about 171 mm of rain on roughly 14 days, which makes September a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average September day.

The nearest other city in this atlas is Rui’an (25 km away). In September its highs average 27.5°C, about as warm as Wenzhou, with 173 mm of rain.

Among the 884 cities listed in China, Wenzhou ranks joint 227th of 884 for the warmest September highs and joint 784th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Wenzhou is 2.0°C warmer than that mean.

From September to October, average highs fall by 3.9°C to 23.8°C, and monthly rainfall falls from 171 mm to 83 mm.

The annual picture

September in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 05101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 3000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Wenzhou climate table

1991–2020
Monthly climate averages for Wenzhou, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 12.0°C4.7°C4.7°C7310.310.611 h
February 13.1°C5.8°C5.8°C8211.711.211 h
March 15.8°C8.8°C8.8°C13415.412.012 h
April 20.2°C13.2°C13.2°C13215.112.813 h
May 24.2°C18.1°C18.1°C18915.313.514 h
June 27.4°C22.3°C22.3°C29018.313.914 h
July 30.3°C25.4°C25.4°C19116.313.714 h
August 30.2°C25.3°C25.3°C25419.813.113 h
September, selected 27.7°C22.2°C22.2°C17114.012.312 h
October 23.8°C16.9°C16.9°C837.311.512 h
November 19.3°C12.0°C12.0°C829.510.811 h
December 14.2°C6.4°C6.4°C648.410.410 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

September in nearby cities

Distance from Wenzhou

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Wenzhou) is explained once on the Wenzhou year overview and on the Sources, method and limits page.