Climate averages 1991–2020

Şurmān weather
in September.

A hot, very dry month: the 3rd warmest and the 6th driest of the year.

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

Average high 32.0°C Daytime mean, September
Average low 23.2°C Night-time mean, September
Rainfall 9.7 mm 2 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Şurmān · average highYear overview

September is a hot month in Şurmān: daytime highs average 32.0°C and nights cool to about 23.2°C. By daytime temperature it is the 3rd warmest of the 12 months.

Expect about 9.7 mm of rain on roughly 2 days, which makes September a very dry month (the 6th 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 Şabrātah (9 km away). In September its highs average 31.9°C, about as warm as Şurmān, with 9.7 mm of rain.

Among the 21 cities listed in Libya, Şurmān ranks joint 4th of 21 for the warmest September highs and joint 12th of 21 for the driest September (rainfall, lowest first). The mean September high of those 21 cities is 30.9°C; Şurmān is 1.1°C warmer than that mean.

From September to October, average highs fall by 3.8°C to 28.2°C, and monthly rainfall rises from 9.7 mm to 18 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. 510152025303540 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

Şurmān climate table

1991–2020
Monthly climate averages for Şurmān, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 16.8°C9.6°C9.6°C265.010.310 h
February 17.8°C9.8°C9.8°C233.911.011 h
March 21.1°C12.0°C12.0°C163.412.012 h
April 24.7°C14.6°C14.6°C9.41.913.013 h
May 28.2°C17.9°C17.9°C4.71.013.814 h
June 31.4°C21.0°C21.0°C0.90.414.314 h
July 33.2°C22.9°C22.9°C0.10.014.114 h
August 33.8°C23.9°C23.9°C0.80.313.413 h
September, selected 32.0°C23.2°C23.2°C9.71.812.412 h
October 28.2°C20.1°C20.1°C183.311.411 h
November 22.6°C15.1°C15.1°C204.210.511 h
December 18.0°C11.2°C11.2°C254.810.010 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 Şurmān

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

Al Ajaylat and Şabrātah lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.