September · Greece
Best time to visit Athens in September Weather, crowds & prices
Weather in Athens in September
Average temperature 25°C, 40 mm of rain, about 22 days with 6+ hours of sunshine and 60% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.6/10
Ranked #4 of 12 months
- Avg temp
- 25°C
- Rainfall
- 40 mm
- Humidity
- 60%
- Days with 6h+ sun
- 22
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Athens scores 8.6/10 for sightseeing and cultural travel - an above-average month (#4 of 12). Expect around 25°C, 40 mm of rain, and roughly 22 days with 6+ hours of sunshine this month.
Athens shines Apr–Jun: cool 18–25°C mornings on the Acropolis, light crowds before 9am, taverna evenings in Plaka.
September is one of the strongest months in Athens (4th)
At 25°C (76°F) this is comfortable city weather in September, with sightseeing easiest before lunch and after the afternoon peak.
With around 40 mm of rain, any showers tend to pass through rather than settle in; about 22 days with 6+ hours of sunshine and 12.2 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Athens at 8.6/10 (4th of 12), just behind May at 10/10.
Pack light clothing, a hat and real sun protection.
Budget for mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Athens in September?
- In September, Athens averages 25°C, 40 mm of rain, and about 22 days with 6+ hours of sunshine. Its climate-comfort score is 8.6/10.
- Is September a good time to visit Athens?
- September earns a 8.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Athens in September?
- Expect about 40 mm of rain in September. Average humidity is 60% and there are about 22 days with 6+ hours of sunshine.
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