Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
Weather Guide
Thessaloniki, Greece Average Monthly Weather
Weather score52Mixed annual avg
Best months: August, July, June
Across the year, average daytime temperatures are around 20°C, sunshine averages 6.5h per day, and rainfall totals about 480mm. Sea temperatures average 19°C across the year.
Annual weather
Annual averages
Temp
20°C
Rain
480mm
Annual total
Sun
6.5h
Sea
19°C
Weather score
52
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 23mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.7h per day, so bright days are a strong part of the month.
Swimmable
Sea temperatures average 27°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Thessaloniki, Greece with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August31°C average high
August is one of Thessaloniki'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
August23mm average rain
August is one of Thessaloniki's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August9.7 hours average sun
August is brighter than Thessaloniki's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August27°C average sea
August is one of Thessaloniki's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
Weather score
August90 weather score
August is one of Thessaloniki'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.
