Climate averages 1991–2020

Glyfáda weather
in September.

A hot, very dry month: the 4th warmest and the joint 4th 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 20.1°C Night-time mean, September
Rainfall 11 mm 2 days with ≥1 mm
Daylight 12 h Sunrise to sunset, per day
Every month in Glyfáda · average highYear overview

September is a hot month in Glyfáda: daytime highs average 28.4°C and nights cool to about 20.1°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 11 mm of rain on roughly 2 days, which makes September a very dry month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 28 min on an average September day.

The nearest other city in this atlas is Piraeus (13 km away). In September its highs average 28.4°C, about as warm as Glyfáda, with 15 mm of rain.

Among the 11 cities listed in Greece, Glyfáda ranks joint 2nd of 11 for the warmest September highs and 1st of 11 for the driest September (rainfall, lowest first). The mean September high of those 11 cities is 27.4°C; Glyfáda is 1.0°C warmer than that mean.

From September to October, average highs fall by 5.0°C to 23.4°C, and monthly rainfall rises from 11 mm to 26 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. 05101520253035 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 1000

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

Every month, side by side

Glyfáda climate table

1991–2020
Monthly climate averages for Glyfáda, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 12.5°C7.0°C7.0°C517.09.910 h
February 13.4°C7.2°C7.2°C426.610.811 h
March 16.1°C8.8°C8.8°C445.411.912 h
April 20.0°C11.6°C11.6°C193.613.213 h
May 25.3°C15.9°C15.9°C112.614.214 h
June 30.3°C20.5°C20.5°C3.71.214.715 h
July 32.7°C23.2°C23.2°C1.60.614.515 h
August 32.6°C23.4°C23.4°C1.30.413.614 h
September, selected 28.4°C20.1°C20.1°C111.812.512 h
October 23.4°C16.4°C16.4°C263.011.211 h
November 18.2°C12.4°C12.4°C475.910.210 h
December 13.8°C8.8°C8.8°C617.59.610 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 Glyfáda

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