The highest day temperature in August 2026 was 103°F. The lowest night temperature was 58°F. The average values for day and night temperatures during August were 95.5°F и 77.6°F respectivly.

The average sea surface temperature in August 2026 for Thessaloniki was 86.6°F. The maximum and minimum values were 84.6°F and 88.2°F respectively.

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation total in August for Thessaloniki is 0.6 in. It makes august the least rainy month of the year.

The average wind speed in August is 5.9 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Thessaloniki in August is 11.7 hours.