Climate averages 1991–2020

Dali Old Town weather
in September.

A mild, very wet month: the 6th warmest and the 10th driest of the year.

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

Average high 21.6°C Daytime mean, September
Average low 15.6°C Night-time mean, September
Rainfall 183 mm 23 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Dali Old Town · average highYear overview

September is a mild month in Dali Old Town: daytime highs average 21.6°C and nights cool to about 15.6°C. By daytime temperature it is the 6th warmest of the 12 months.

Expect about 183 mm of rain on roughly 23 days, which makes September a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average September day.

The nearest other city in this atlas is Dali (13 km away). In September its highs average 22.3°C, 0.7°C warmer than Dali Old Town, with 184 mm of rain.

Among the 884 cities listed in China, Dali Old Town ranks joint 759th of 884 for the warmest September highs and joint 813th of 884 for the driest September (rainfall, lowest first). The mean September high of those 884 cities is 25.7°C; Dali Old Town is 4.1°C cooler than that mean.

From September to October, average highs fall by 2.0°C to 19.6°C, and monthly rainfall falls from 183 mm to 92 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. 051015202530 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

Dali Old Town climate table

1991–2020
Monthly climate averages for Dali Old Town, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 13.8°C5.2°C5.2°C233.810.711 h
February 16.0°C6.2°C6.2°C214.111.311 h
March 19.5°C8.9°C8.9°C275.112.012 h
April 22.3°C11.6°C11.6°C386.512.713 h
May 23.7°C14.3°C14.3°C9710.513.413 h
June 23.7°C16.7°C16.7°C16319.013.714 h
July 22.6°C16.9°C16.9°C23026.013.614 h
August 22.7°C16.6°C16.6°C24226.413.013 h
September, selected 21.6°C15.6°C15.6°C18322.812.312 h
October 19.6°C13.4°C13.4°C9213.311.612 h
November 16.5°C9.6°C9.6°C264.310.911 h
December 14.1°C6.4°C6.4°C132.610.611 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 Dali Old Town

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 Dali Old Town) is explained once on the Dali Old Town year overview and on the Sources, method and limits page.