Climate averages 1991–2020

Sishui weather
in September.

A warm, moderately wet month: the 5th warmest and the 9th driest of the year. Meets the pleasant-weather rule

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

Average high 25.9°C Daytime mean, September
Average low 17.1°C Night-time mean, September
Rainfall 73 mm 7 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Sishui · average highYear overview

September is a warm month in Sishui: daytime highs average 25.9°C and nights cool to about 17.1°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 73 mm of rain on roughly 7 days, which makes September a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.

The nearest other city in this atlas is Qufu (26 km away). In September its highs average 26.3°C, about as warm as Sishui, with 77 mm of rain.

Among the 884 cities listed in China, Sishui ranks joint 527th of 884 for the warmest September highs and joint 290th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Sishui is 0.2°C warmer than that mean.

From September to October, average highs fall by 5.3°C to 20.6°C, and monthly rainfall falls from 73 mm to 32 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. -10-505101520253035 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 2500

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

Every month, side by side

Sishui climate table

1991–2020
Monthly climate averages for Sishui, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 5.0°C-4.1°C-4.1°C8.62.210.010 h
February 8.3°C-1.8°C-1.8°C153.010.911 h
March 14.2°C2.7°C2.7°C233.811.912 h
April 20.9°C9.2°C9.2°C395.513.113 h
May 26.2°C15.1°C15.1°C636.014.014 h
June 30.2°C20.0°C20.0°C827.814.515 h
July 30.7°C23.1°C23.1°C22814.514.314 h
August 29.5°C22.1°C22.1°C18813.113.514 h
September, selected 25.9°C17.1°C17.1°C736.912.412 h
October 20.6°C10.7°C10.7°C324.511.311 h
November 13.0°C3.5°C3.5°C284.010.310 h
December 6.5°C-2.4°C-2.4°C112.49.810 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 Sishui

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 Sishui) is explained once on the Sishui year overview and on the Sources, method and limits page.