September weather forecastThessaloniki, Greece
September weather for Thessaloniki, Greece: On the first day of September in Thessaloniki, sunrise is at 06:55 and sunset at 20:00. On the first day of September in Thessaloniki, sunrise is at 06:55 and sunset at 20:00.
September
Weather in September
September marks the transition from summer to autumn in Thessaloniki. However, the warmth lingers on with average maximum temperatures sliding to 26.4°C (79.5°F). By the end of September, the weather starts to freshen up, making way for the fall season. The city begins its shift into the more comfortable and cozy autumn climate, a soothing retreat from the peak summer heat.Temperature
The average high-temperature in Thessaloniki, Greece, drops in September, from August's hot 31.7°C (89.1°F) to a moderately hot 26.4°C (79.5°F). Thessaloniki witnesses a consistent average low-temperature of 17°C (62.6°F) throughout September.Humidity
In Thessaloniki, the average relative humidity in September is 59%.Rainfall
In Thessaloniki, in September, during 9.8 rainfall days, 28mm (1.1") of precipitation is typically accumulated. Throughout the year, in Thessaloniki, there are 133.1 rainfall days, and 436mm (17.17") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Sea temperature
In September, the average sea temperature in Thessaloniki is 24.7°C (76.5°F).Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.7°C (76.5°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)
Daylight
In September, the average length of the day in Thessaloniki is 12h and 28min.On the first day of September in Thessaloniki, sunrise is at 06:55 and sunset at 20:00. On the last day of the month, sunrise is at 07:24 and sunset at 19:11 EEST.
Sunshine
The average sunshine in September in Thessaloniki is 9.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take note! Sand and water reflections strengthen the Sun's UV exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Thessaloniki, Greece
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is July (31.8°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is August (20.8°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).
Average pressure in September
Thessaloniki, Greece
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is December (1019.8mbar).
The month with the lowest atmospheric pressure is July (1013.2mbar).
Average wind speed in September
Thessaloniki, Greece
- Average wind speed in September: 7.8km/h
The windiest month (with the highest average wind speed) is February (9.2km/h).
The calmest month (with the lowest average wind speed) is November (7.3km/h).
Average humidity in September
Thessaloniki, Greece
- Average humidity in September: 59%
The months with the highest relative humidity are January and February (75%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Thessaloniki, Greece
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is March (55mm).
The driest month (with the least rainfall) is August (20mm).
Average rainfall days in September
Thessaloniki, Greece
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (8.4 days).
Average snowfall in September
Thessaloniki, Greece
- Average snowfall in September: 0mm
The month with the highest snowfall is January (35mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Thessaloniki, Greece
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Thessaloniki, Greece
- Average sea temperature in September: 24.7°C
The best month for swimming (with the highest average sea temperature) is July (26.2°C).
The coldest month (with the lowest average sea temperature) is March (13.3°C).
Average daylight in September /
Average sunshine in September
Thessaloniki, Greece
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in September
Thessaloniki, Greece
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is August (20 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in September
Thessaloniki, Greece
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Thessaloniki, Greece
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in September
Thessaloniki, Greece
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
