Mild
Average highs are around 25°C, so days are mild rather than hot.
September verdict
Santorini, Greece in September
Weather score87Excellent
Excellent for holiday weather
Average highs are around 25°C, so days are mild rather than hot. Sunshine averages 10h per day, so bright days are a strong part of the month. Rainfall averages 14mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
25°C
Rain
14mm
Sun
10h
Sea
24°C
Weather score
87
Excellent
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 14mm, which is relatively low for holiday planning.
Bright
Sunshine averages 10h per day, so bright days are a strong part of the month.
Swimmable
Sea temperatures average 24°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Santorini, Greece with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September25°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September14mm average rain
September sits on the drier side of Santorini's year, which helps with sightseeing and transfers.
Driest monthsApril to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September10 hours average sun
September sits close to Santorini's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September24°C average sea
September is one of Santorini's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 24°C in this stretch, so swimming comfort is at its strongest.
Weather score
September87 weather score
September is one of Santorini's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
