What September feels like in Thessaloniki
September is early autumn in Thessaloniki. Afternoons are warm and pleasant, good for long days out. Evenings bring a clear drop in temperature, and nights stay mild. The air carries some moisture, so hot spells feel a little sticky.
Rain in Thessaloniki in September
Most days stay dry; rain arrives about one day in 4. Each rainy day adds about 8.3 mm (0.3 in), a proper wetting rather than a sprinkle. That is close to Thessaloniki's typical rain per wet day for the whole year (about 7.6 mm).
Daylight and sunshine in September
Mid-month, Thessaloniki gets 12 h 32 min of daylight, from sunrise near 7:08 am to sunset near 7:39 pm. Evenings are drawing in — 1 h 19 min less daylight than mid-August. Measured sunshine covers about 85% of the daylight — skies are mostly clear.
How September compares to the rest of the year
In Thessaloniki's temperature order, September sits as the 4th warmest month. Compared with August, afternoons are 5.1°C (9.2°F) cooler, with 22 mm more rain. Temperatures keep falling into October. By October, typical highs are 20.8°C (69.4°F).
Who September suits
- Sightseeing: a good fit — daytime temperatures are fine for walking around.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
Tips for visiting Thessaloniki in September
Versatile Layers
Pack pieces you can take off by noon and put back on at dusk.
Sunglasses
Frequent sunshine — sunglasses and a light hat.
Quick questions
How warm is Thessaloniki in September?
Expect around 26.8°C (80.2°F) in the afternoon and 17.9°C (64.2°F) at night, which most visitors would call warm.
Does it rain a lot in Thessaloniki in September?
Not especially. There are about 7 rainy days (58 mm), mostly moderate rain.
What should I wear in Thessaloniki in September?
The numbers point to versatile layers and sunglasses. Add a layer for after dark.
Is September or October better for visiting Thessaloniki?
On our 12-month climate ranking, September comes out ahead (#2 of 12 vs #3). October is cooler.