Cool
Average highs are around 16°C, so pack for cooler days.
December verdict
Santorini, Greece in December
Weather score31Poor
Poor for holiday weather
Average highs are around 16°C, so pack for cooler days. Sunshine averages 4.2h per day, so this is not one of the brighter months. Rainfall averages 103mm, so some wet days are possible.
December weather
Monthly averages
Temp
16°C
Rain
103mm
Sun
4.2h
Sea
18°C
Weather score
31
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 103mm, so some wet days are possible.
Limited sun
Sunshine averages 4.2h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 18°C, so the water can feel cool.
Map
Weather map
Compare Santorini, Greece with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December16°C average high
December is on the cooler side of Santorini's year, useful if you prefer less intense daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
December103mm average rain
December is one of Santorini's wettest months, so rain is likely to be a major planning factor.
Driest monthsApril to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December4.2 hours average sun
December is one of Santorini's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December18°C average sea
December is below Santorini's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 24°C in this stretch, so swimming comfort is at its strongest.
Weather score
December31 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
