Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
Weather Guide
Santorini, Greece Average Monthly Weather
Weather score60Good annual avg
Best months: August, July, June
Across the year, average daytime temperatures are around 21°C, sunshine averages 8.2h per day, and rainfall totals about 554mm. Sea temperatures average 20°C across the year.
Annual weather
Annual averages
Temp
21°C
Rain
554mm
Annual total
Sun
8.2h
Sea
20°C
Weather score
60
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 1mm, which is relatively low for holiday planning.
Bright
Sunshine averages 13h 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
July28°C average high
July is one of Santorini's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
July1mm average rain
July is one of Santorini's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July13 hours average sun
July is one of Santorini's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July24°C average sea
July 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
July91 weather score
July 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.
