Weather in Thessaloniki in September

September in Thessaloniki is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.

In Greece, this is how Thessaloniki actually wears September, not how a country centroid would. Compared with July and January, September sits in the middle of Thessaloniki's year.

Pack for Thessaloniki in September, not for a brochure that was photographed in another season.

Thessaloniki
Average temp
22°C

17–27°C

Rainfall
33 mm

Not much rain

Sunshine
7.9 h

hours per day

What to expect

Daytime

Warm days in Thessaloniki in September. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.

You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.

Rain

Mixed skies in Thessaloniki in September. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.

Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.

Evening

Evenings are cooler. A layer helps after sunset.

What to pack

  • Sun protection

  • A layer for cooler evenings

Where to stay in Thessaloniki

Dates are a starting point for September.

All hotels in Thessaloniki

Travel guides for Thessaloniki

What to read before you book.

All travel guides in Thessaloniki

Average weather in Thessaloniki

TemperatureRainfall

Source: MeteostatPeriod: 1991-2020Checked: 28 Aug 2026265 places covered

Similar weather in September

Other destinations whose September averages sit close to this one.

Check another month

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FAQs about Thessaloniki

Climate averages for Thessaloniki, 1991–2020.

The best time to visit Thessaloniki is between May and October, the most comfortable stretch of the year on these averages.

August is the hottest month, with an average around 27°C.

December is the wettest month, with about 56 mm of rain.

No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.