Climate averages 1991–2020

Dezful weather
in September.

A very hot, very dry month: the 4th warmest and the 4th driest of the year.

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

Average high 41.7°C Daytime mean, September
Average low 24.7°C Night-time mean, September
Rainfall 1.1 mm fewer than one day with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Dezful · average highYear overview

September is a very hot month in Dezful: daytime highs average 41.7°C and nights cool to about 24.7°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 1.1 mm of rain on fewer than one day, which makes September a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 24 min on an average September day.

The nearest other city in this atlas is Andīmeshk (10 km away). In September its highs average 41.2°C, 0.5°C cooler than Dezful, with almost no rain (under 1 mm).

Among the 128 cities listed in Iran, Dezful ranks 7th of 128 for the warmest September highs and joint 54th of 128 for the driest September (rainfall, lowest first). The mean September high of those 128 cities is 31.0°C; Dezful is 10.7°C warmer than that mean.

From September to October, average highs fall by 7.1°C to 34.7°C, and monthly rainfall rises from 1.1 mm to 22 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. 05101520253035404550 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

Dezful climate table

1991–2020
Monthly climate averages for Dezful, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 16.2°C5.9°C5.9°C13310.110.310 h
February 18.3°C6.9°C6.9°C948.011.011 h
March 23.0°C10.4°C10.4°C1137.312.012 h
April 29.6°C15.5°C15.5°C705.113.013 h
May 37.7°C21.2°C21.2°C9.41.613.814 h
June 44.0°C26.0°C26.0°C0.20.014.214 h
July 46.2°C29.1°C29.1°C0.20.014.114 h
August 46.0°C29.0°C29.0°C0.20.013.313 h
September, selected 41.7°C24.7°C24.7°C1.10.312.412 h
October 34.7°C19.8°C19.8°C221.811.411 h
November 24.2°C12.8°C12.8°C896.110.511 h
December 18.2°C7.9°C7.9°C1358.210.110 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 Dezful

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