Climate averages 1991–2020

Tehuacán weather
in September.

A warm, wet month: the 8th warmest and the 11th driest of the year.

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

Average high 23.7°C Daytime mean, September
Average low 14.8°C Night-time mean, September
Rainfall 121 mm 15 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Tehuacán · average highYear overview

September is a warm month in Tehuacán: daytime highs average 23.7°C and nights cool to about 14.8°C. By daytime temperature it is the 8th warmest of the 12 months.

Expect about 121 mm of rain on roughly 15 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average September day.

The nearest other city in this atlas is Orizaba (53 km away). In September its highs average 24.0°C, about as warm as Tehuacán, with 204 mm of rain.

Among the 153 cities listed in Mexico, Tehuacán ranks 108th of 153 for the warmest September highs and 62nd of 153 for the driest September (rainfall, lowest first). The mean September high of those 153 cities is 26.5°C; Tehuacán is 2.9°C cooler than that mean.

From September to October, average highs fall by 0.5°C to 23.1°C, and monthly rainfall falls from 121 mm to 65 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. 51015202530 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 1500

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

Every month, side by side

Tehuacán climate table

1991–2020
Monthly climate averages for Tehuacán, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 21.9°C9.7°C9.7°C7.11.511.211 h
February 24.1°C10.6°C10.6°C7.71.811.512 h
March 26.2°C12.0°C12.0°C194.712.012 h
April 27.8°C14.2°C14.2°C498.512.613 h
May 27.0°C15.1°C15.1°C10015.313.013 h
June 24.8°C15.1°C15.1°C14316.213.213 h
July 24.4°C14.0°C14.0°C7410.113.113 h
August 24.9°C14.5°C14.5°C8312.212.813 h
September, selected 23.7°C14.8°C14.8°C12115.312.312 h
October 23.1°C13.5°C13.5°C6510.411.712 h
November 22.3°C11.4°C11.4°C163.811.311 h
December 22.2°C10.2°C10.2°C5.51.211.011 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 Tehuacán

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