Climate averages 1991–2020

Dūmā weather
in September.

A 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 32.4°C Daytime mean, September
Average low 17.3°C Night-time mean, September
Rainfall <1 mm Almost no rain
Daylight 12 h Sunrise to sunset, per day
Every month in Dūmā · average highYear overview

September is a hot month in Dūmā: daytime highs average 32.4°C and nights cool to about 17.3°C. By daytime temperature it is the 4th warmest of the 12 months.

Rain is very rare: less than 1 mm falls in a typical September (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 25 min on an average September day.

The nearest other city in this atlas is Damascus (12 km away). In September its highs average 31.9°C, 0.5°C cooler than Dūmā, with 1.2 mm of rain.

Among the 18 cities listed in Syria, Dūmā ranks 11th of 18 for the warmest September highs and 1st of 18 for the driest September (rainfall, lowest first). The mean September high of those 18 cities is 32.7°C; Dūmā is 0.3°C cooler than that mean.

From September to October, average highs fall by 5.9°C to 26.5°C, and monthly rainfall rises from under 1 mm to 3.3 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. 0510152025303540 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 500

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

Every month, side by side

Dūmā climate table

1991–2020
Monthly climate averages for Dūmā, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 11.5°C2.2°C2.2°C245.010.210 h
February 13.2°C2.9°C2.9°C184.411.011 h
March 17.9°C5.6°C5.6°C133.112.012 h
April 23.3°C9.4°C9.4°C4.31.313.013 h
May 28.7°C13.5°C13.5°C4.01.013.914 h
June 33.3°C16.4°C16.4°C0.20.014.314 h
July 36.1°C18.3°C18.3°C0.10.014.114 h
August 35.9°C18.8°C18.8°C0.10.013.413 h
September, selected 32.4°C17.3°C17.3°C0.30.112.412 h
October 26.5°C13.6°C13.6°C3.30.911.411 h
November 18.5°C7.8°C7.8°C112.510.510 h
December 13.3°C4.0°C4.0°C163.710.010 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 Dūmā

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