Weather in Thessaloniki in August 2025
- August is usually the hottest month of the year in Thessaloniki;
Average weather
Average temperature in Thessaloniki in August
The expected average maximum temperature in August is +33°C with a maximum of +37°C and a minimum of +20°C.
The average maximum temperature goes up 6% by the end of the month, compared with the beginning of the month, from +32°C to +33°C.
Is Thessaloniki warm or cold in August?
Thessaloniki is typically hot in August.
Maximum temperatures go up compared to the previous month from +31°C to +31°C. The minimum temperature also goes up from +22°C to +22°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
August is the hottest month in Thessaloniki, here is the comparison with other months:
Water temperature in Thessaloniki in August
Water in Thessaloniki in August is Warm. It varies from +24°C to +28°C, with an average of +26°C. This is almost similar to the air temperature, which averages +31°C.
The water temperature in August is one of the warmest of the entire year:
Can you swim in Thessaloniki in August?
Climate in Thessaloniki in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +31°C | +31°C | +27°C | ||||
| Min. temperature | ||||||
| +16°C | +14°C | +10°C | ||||
| Max. temperature | ||||||
| +41°C | +41°C | +36°C | ||||
| Rainfall | ||||||
| 20 mm | 25 mm | 49 mm | ||||
| Wind | ||||||
| 3 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +26°C | +26°C | +25°C | ||||
| Humidity | ||||||
| 53% | 55% | 61% | ||||
| Air pressure | ||||||
| 1012 HPa | 1012 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 20 | 20 | 16 | ||||
| Cloudy days | ||||||
| 2 | 2 | 4 | ||||
| Rainy days | ||||||
| 5 | 5 | 7 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as great as in July. The temperature levels stay the same in the area of +31°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 20 mm to 25 mm. Humidity rises from 53% to 55%. Winds are calmer in comparison to July, going down from 3 m/s to 2 m/s on average. The amount of sunny days stay about the same, averaging 20 sunny days during the month.
September brings much the same weather, it remains great.
Wind
The average wind speed is 2 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Thessaloniki is gradually increasing during August, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last August in Thessaloniki?
Climate Change over Years
The climate in Thessaloniki in August has not changed much over the last 43 years.
The average temperature was the lowest in 1991 (+18°C) and the highest in 2013 (+23°C). The driest year was 1989 with only 258 mm of rainfall, and the wettest year was 2020 with 1565 mm.
FAQ
Is August a good time to visit Thessaloniki?
Can you sunbathe in Thessaloniki in August?
Can you swim in Thessaloniki in August?
Is Thessaloniki rainy in August?
Is it sunny in Thessaloniki in August?
Other cities in Greece
Monthly weather in Thessaloniki
Source of the data
For this page, we’ve looked at the typical weather in Thessaloniki, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.