September · Greece
Best time to visit Thessaloniki in September Weather, crowds & prices
Weather in Thessaloniki in September
Average temperature 21°C, 75 mm of rain, about 28 days with 6+ hours of sunshine and 70% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.7/10
Ranked #4 of 12 months
- Avg temp
- 21°C
- Rainfall
- 75 mm
- Humidity
- 70%
- Days with 6h+ sun
- 28
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Thessaloniki scores 8.7/10 for sightseeing and cultural travel - an above-average month (#4 of 12). Expect around 21°C, 75 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
Thessaloniki layers Roman ruins, Byzantine churches and a seafront promenade on the Thermaic Gulf.
September ranks 4th of 12 for Thessaloniki — one of the best windows
September averages 21°C (71°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Rainfall runs 75 mm, so plan one flexible day in three; you still get about 28 days with 6+ hours of sunshine and 12.5 hours of daylight.
A 8.7/10 puts this among the year's best months in Thessaloniki (4th of 12); only October scores higher, at 9.5/10.
Pack light clothing, a hat and real sun protection, a packable rain layer.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Thessaloniki in September?
- In September, Thessaloniki averages 21°C, 75 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 8.7/10.
- Is September a good time to visit Thessaloniki?
- September earns a 8.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Thessaloniki in September?
- Expect about 75 mm of rain in September. Average humidity is 70% and there are about 28 days with 6+ hours of sunshine.
Curated in Thessaloniki
Tickets & experiences
Things to do in Thessaloniki
Thessaloniki, Greece. Live activities and tours from GetYourGuide, matched to this destination.