Thessaloniki weather in August 2025

Expect 31°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Thessaloniki in August. Check more long-term weather averages for Thessaloniki in August before you book your next holiday to Greece in 2025/2026.

  • 31°C maximum daytime temperature in August in Thessaloniki31
    31°C max day temperature
  • 10 hours of sunshine per day
  • 4 days with some rainfall in August in Thessaloniki4
    4 days with some rainfall
  • 18°C minimum night-time temperature in August in Thessaloniki18
    18°C min night temperature
  • 14 hours of daylight per day in August in Thessaloniki14
    14 hours of daylight per day
  • Moderate heat & humidity in August in ThessalonikiM
    Moderate heat & humidity
  • 23 mm monthly rainfall in August in Thessaloniki23
    23 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Thessaloniki8
    8 (Very High) UV index
  • 26°C sea temperature in August in Thessaloniki26
    26°C sea temperature

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The August weather guide for Greece (Thessaloniki) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Greece

How hot is it in Thessaloniki in August?

Daytime temperatures usually reach 31°C in Thessaloniki in August with moderate heat and humidity, falling to 18°C at night.

How sunny is it in Thessaloniki in August?

There are normally 10 hours of bright sunshine each day in Thessaloniki in August - that's 71% of daylight hours.

How warm is the sea around Thessaloniki in August?

The average sea temperature around Thessaloniki in August is 26°C.

Does it rain in Thessaloniki in August?

There are usually 4 days with some rain in Thessaloniki in August and the average monthly rainfall is 23mm.

Thessaloniki August sunrise & sunset times

Browse the sunrise and sunset times for Thessaloniki in August 2025. Select a month to view Thessaloniki sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:25 19:43
Saturday, 16th August 2025 05:40 19:25
Sunday, 31st August 2025 05:54 19:02

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