Climate averages 1991–2020

Arar weather
in September.

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

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

Average high 36.6°C Daytime mean, September
Average low 21.9°C Night-time mean, September
Rainfall <1 mm Almost no rain
Daylight 12 h Sunrise to sunset, per day
Every month in Arar · average highYear overview

September is a very hot month in Arar: daytime highs average 36.6°C and nights cool to about 21.9°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 (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 12 h 23 min on an average September day.

The nearest other city in this atlas is Sakakah (137 km away). In September its highs average 37.1°C, about as warm as Arar, with almost no rain (under 1 mm).

Among the 35 cities listed in Saudi Arabia, Arar ranks 19th of 35 for the warmest September highs and joint 1st of 35 for the driest September (rainfall, lowest first). The mean September high of those 35 cities is 36.0°C; Arar is 0.6°C warmer than that mean.

From September to October, average highs fall by 6.3°C to 30.4°C, and monthly rainfall rises from under 1 mm to 3.2 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. 051015202530354045 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

Arar climate table

1991–2020
Monthly climate averages for Arar, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 14.1°C2.7°C2.7°C112.610.410 h
February 16.8°C4.2°C4.2°C9.52.411.111 h
March 22.0°C8.5°C8.5°C8.41.912.012 h
April 28.0°C13.8°C13.8°C6.51.512.913 h
May 33.7°C19.3°C19.3°C2.10.313.714 h
June 37.8°C23.0°C23.0°C00.014.114 h
July 39.9°C25.3°C25.3°C00.013.914 h
August 40.2°C25.3°C25.3°C00.013.313 h
September, selected 36.6°C21.9°C21.9°C00.012.412 h
October 30.4°C16.5°C16.5°C3.20.811.411 h
November 20.7°C8.9°C8.9°C122.210.611 h
December 15.4°C4.2°C4.2°C122.210.210 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 Arar

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