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Thessaloníki Weather in September
September in Thessaloníki typically sees daytime highs of 27°C (81°F) and nighttime lows of 18°C (64°F). Expect some rainfall during the month.
Rainfall in Thessaloníki in September
Typically, you can expect about 4 days of rain this month, with 50 mm (2 in) on average. Although rain is not especially frequent, individual showers can still be quite heavy.
Temperature in Thessaloníki in September
Thessaloníki in September has excellent weather. Days reach 27°C (81°F) and nights cool to 18°C (64°F). This kind of day-to-night contrast is typical for this time of year. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Thessaloníki in September
Expect sunny days throughout the month, with an estimated 231 hours of sunshine. This makes it a pleasant time to visit Thessaloníki.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Thessaloníki.
Thessaloníki Temperature in September
Min Temperature
18°C (64°F)
Max Temperature
27°C (81°F)
Chance of Rain
14%
Precipitation
50 mm (2 in)
Rainy days
4 days
Humidity
63%
Sunshine
231 hours
Percentage Sunshine
Thessaloníki Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Thessaloníki - and find the best time to visit.
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Thessaloníki typically drop from around 29°C (84°F) at the start of September to approximately 25°C (77°F) by the end. Nights are pleasant, with lows typically ranging from 15°C (59°F) to 19°C (66°F).
Average temperatures in September
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Thessaloníki in September
Browse day-by-day weather records for Thessaloníki spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Thessaloníki historical weather extremes in September
Based on 19 years of weather observations in Thessaloníki between 2006 and 2025, these are the recorded extremes.
- On September 4, 2015, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
- Thessaloníki experienced its chilliest September day on September 28, 2008, reaching only 16°C (61°F).
- The lowest overnight temperature recorded in September was 8°C (46°F) (September 23, 2022).
Best Places in Greece in September
Find out more about the weather in Greece and which places have the best travel conditions in this month. See all of Greece in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Thessaloníki in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Thessaloníki in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling8/10 -
Walking8/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports8/10
Thessaloníki 3-Day Forecast
More climate data for Thessaloníki
Temperature Rainfall Sunshine Humidity
See the full Thessaloníki climate overview or explore weather in Greece.
Popular in September
Where to go in September - average daytime high across popular destinations.
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