Thessaloniki
Greece
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Thessaloniki, Greece

A street in front of the ancient white tower in Thessaloniki, Greece, in a park of trees
A street in front of the ancient white tower in Thessaloniki, Greece, in a park of trees
The first month of the autumn, September, is also a moderately hot month in Thessaloniki, Greece, with average temperature varying between 27.2°C (81°F) and 14.9°C (58.8°F).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 31.1°C (88°F) in August, to a warm 27.2°C (81°F). In September, in Thessaloniki, Greece, the average low-temperature is 14.9°C (58.8°F).

Rainfall

In Thessaloniki, during September, the rain falls for 5.9 days and regularly aggregates up to 27.4mm (1.1") of precipitation. In Thessaloniki, Greece, during the entire year, the rain falls for 114.1 days and collects up to 448.7mm (17.7") of precipitation.

Sea temperature

In September, the average sea temperature in Thessaloniki is 24.7°C (76.5°F).
Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 24.7°C (76.5°F).

Daylight

In Thessaloniki, the average length of the day is 12.5h.

Sunshine

The average sunshine in September is 7.7h.

UV index

The average daily maximum UV index in Thessaloniki, Greece, is 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Thessaloniki?

In Thessaloniki, Greece, in September, the average high-temperature is 27.2°C (81°F), and the average low-temperature is 14.9°C (58.8°F).

How many days does it rain in September in Thessaloniki?

In September, in Thessaloniki, Greece, the rain falls for 5.9 days. Throughout September, 27.4mm (1.1") of precipitation is accumulated.

How warm is the water in September in Thessaloniki?

In Thessaloniki, in September, the average water temperature is 24.7°C (76.5°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 24.7°C (76.5°F) water.

What is the average length of the day in September in Thessaloniki?

In September, the average length of the day in Thessaloniki, Greece, is 12.5h.

How many hours of sunshine does Thessaloniki have in September?

In Thessaloniki, Greece, the average sunshine in September is 7.7h.

What is the UV index intensity in September in Thessaloniki?

In September, the average daily maximum UV index in Thessaloniki is 6. A UV Index reading of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Thessaloniki, Greece
  • Average high temperature in September: 27.2°C

The warmest month (with the highest average high temperature) is July (31.5°C).
The month with the lowest average high temperature is January (9.3°C).

  • Average low temperature in September: 14.9°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).

Average rainfall in September - Thessaloniki, Greece
  • Average rainfall in September: 27.4mm

The wettest month (with the highest rainfall) is December (54.9mm).
The driest month (with the lowest rainfall) is August (20.4mm).

Average rainfall days in September - Thessaloniki, Greece
  • Average rainfall days in September: 5.9 days

The month with the highest number of rainy days is December (12.5 days).
The month with the lowest number of rainy days is August (4.7 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: 12.5h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 7.7h

The month with most sunshine is July (Average sunshine: 10.5h).
The month with least sunshine is January (Average sunshine: 3.2h).

Average UV index in September - Thessaloniki, Greece
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).