Thessaloniki weather in September 2025
September
Thessaloniki weather in September 2025
September
Day
27 °C
Night
16 °C
Sea
24 °C
Precipitation
31 mm
in month
Rainy days
5 days
in month
Daylight
12 hours
average
Sunshine
8 hours
average
Humidity
61 %
Day
27 °C
Night
16 °C
Sea
24 °C
Precipitation
31 mm
in month
Rainy days
5 days
in month
Daylight
12 hours
average
Sunshine
8 hours
average
Humidity
61 %
Overview: Thessaloniki
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We make the most from 40 years of historical weather data to predict the best weather conditions.Weather overview for Thessaloniki
Weather overview
In September in Thessaloniki, the average air temperature ranges from 27 °C (80 °F) during the day to 16 °C (60 °F) at night. There are 5 days of rain on average, where the rainfall is 31 mm (1.22 in).
Are there good conditions to visit in Thessaloniki in September?
September is one of the best months to visit Thessaloniki. The daily temperatures in this month reach pleasant 27 °C (80 °F). The seawater temperature reaches ideal 24 °C (75 °F). You can expect just 5 days of rain during the month, taking an umbrella is not necessary. The temperature of 16 °C (60 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the sea temperature in Thessaloniki in September?
In Thessaloniki in September expect the sea to be warm at 24 °C (75 °F). This warm sea is nice for swimming, maybe cold for some, but most people can spend a long time in it.
What is the temperature in Thessaloniki during the day in September?
In September in Thessaloniki, the average daily temperatures will be 27 °C (80 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.What is the air temperature in Thessaloniki in September at night?
The average night temperature in September in Thessaloniki is 16 °C (60 °F). This temperature is pleasant for a wide range of evening, night, and morning activities from sports to sitting outside in restaurants or evening walks.
How many days of precipitation on average can I expect in Thessaloniki in September?
In Thessaloniki in September, we can expect 5 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.1 days of the week, or in general - 16 % days.
How many hours of sun to expect in September in Thessaloniki?
In September in Thessaloniki, you can expect around 8 hours of sunshine.
How long is the day (from dawn till dusk) in Thessaloniki in September?
The length of daylight in September in Thessaloniki is 12 hours.
We make the most from 40 years of historical weather data to predict the best weather conditions.Is the temperature rising or falling in the course of time in September in Thessaloniki?
During September in Thessaloniki, the day temperatures are decreasing - from 29 °C (84 °F) at the beginning of the month to 24 °C (74 °F) at the end of the month.
Is there a dry season in September in Thessaloniki?
Yes, there is a dry season in Thessaloniki in September with just 5 days during the month being rainy.
Is Thessaloniki rainier in September than in October?
No, in Thessaloniki in September it does not rain more than in October.
How does the sea temperature evolve during the month in Thessaloniki in September?
Thessaloniki has a decreasing trend of the sea temperature during September - from 25 °C (77 °F) in the first days of the month to 22 °C (72 °F) in the last days of the month.
Is the weather in Thessaloniki warmer in September than in August?
No, in September in Thessaloniki the temperature is not higher than in August.
What level of humidity is to expect in September in Thessaloniki?
In Thessaloniki in September, expect humidity around 61 %.
Is the sea in Thessaloniki warmer in September than in August?
No, the sea temperature in Thessaloniki in September is not higher than in August.