Climate averages 1991–2020

Guelmim weather
in September.

A hot, very dry month: the 3rd warmest and the 5th driest of the year. Meets the pleasant-weather rule

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

Average high 28.4°C Daytime mean, September
Average low 17.5°C Night-time mean, September
Rainfall 4.1 mm fewer than one day with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Guelmim · average highYear overview

September is a hot month in Guelmim: daytime highs average 28.4°C and nights cool to about 17.5°C. By daytime temperature it is the 3rd warmest of the 12 months.

Expect about 4.1 mm of rain on fewer than one day, which makes September a very dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 22 min on an average September day.

The nearest other city in this atlas is Tiznit (85 km away). In September its highs average 26.4°C, 2.0°C cooler than Guelmim, with 5.7 mm of rain.

Among the 56 cities listed in Morocco, Guelmim ranks joint 31st of 56 for the warmest September highs and 1st of 56 for the driest September (rainfall, lowest first). The mean September high of those 56 cities is 28.8°C; Guelmim is 0.3°C cooler than that mean.

From September to October, average highs fall by 1.7°C to 26.7°C, and monthly rainfall rises from 4.1 mm to 11 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. 5101520253035 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

Guelmim climate table

1991–2020
Monthly climate averages for Guelmim, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 19.1°C8.2°C8.2°C132.410.511 h
February 20.5°C9.5°C9.5°C192.811.111 h
March 22.9°C11.3°C11.3°C172.812.012 h
April 23.2°C12.6°C12.6°C7.31.412.813 h
May 25.0°C14.2°C14.2°C3.20.613.614 h
June 26.9°C16.0°C16.0°C0.90.214.014 h
July 31.0°C18.2°C18.2°C0.30.013.814 h
August 31.6°C19.1°C19.1°C2.40.513.213 h
September, selected 28.4°C17.5°C17.5°C4.10.912.412 h
October 26.7°C16.0°C16.0°C111.711.511 h
November 23.1°C12.5°C12.5°C192.310.711 h
December 20.0°C9.5°C9.5°C193.210.310 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 Guelmim

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