Athens in September
In September, Athens averages 29°C (84°F) during the day and 19°C (66°F) at night, with only about 3 rainy days.
High seasonConditions are warm and beach-friendly. Skies are generally dry and clear.
September is a great month to visit Athens: pleasant temperatures and relatively few wet days.
How September compares to the rest of the year in Athens
September is in the middle of the year for warmth in Athens (4th of 12) and moderately rainy compared to the rest of the year (9th of 12). Daytime temperature runs 7°C above the annual average (22°C). September runs 4°C cooler than August (33°C) and cools 6°C in October (23°C).
September sunrise & sunset in Athens
Times shown for Athens local time (Europe/Athens), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Athens — September
Golden-hour and blue-hour windows for the 15th of September, in Athens's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Athens in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (High season) and Athens's popularity.
Crowds & pricing — September in Athens
This is a busy month in Athens — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — September in Athens
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Athens — September
Across the year Athens's sea swings from 15.7°C (March) to 27.8°C (August) — September sits at 26°C.
Athens in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 13°C / 55°F | 7°C / 45°F | 55 mm | 7 | — |
| February | 14°C / 57°F | 7°C / 45°F | 45 mm | 6 | — |
| March | 16°C / 61°F | 8°C / 46°F | 45 mm | 6 | — |
| April | 20°C / 68°F | 11°C / 52°F | 30 mm | 5 | — |
| May | 25°C / 77°F | 16°C / 61°F | 20 mm | 4 | — |
| June | 30°C / 86°F | 20°C / 68°F | 10 mm | 2 | — |
| July | 33°C / 91°F | 23°C / 73°F | 5 mm | 1 | — |
| August | 33°C / 91°F | 23°C / 73°F | 10 mm | 1 | — |
| September | 29°C / 84°F | 19°C / 66°F | 15 mm | 3 | — |
| October | 23°C / 73°F | 15°C / 59°F | 55 mm | 6 | — |
| November | 18°C / 64°F | 11°C / 52°F | 75 mm | 7 | — |
| December | 14°C / 57°F | 8°C / 46°F | 75 mm | 8 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Athens in September →
Frequently asked questions
How hot is Athens in September?
In September, Athens averages a high of 29°C (84°F) and a low of 19°C (66°F) — generally warm.
Does it rain a lot in Athens in September?
September is generally dry in Athens, with about 3 rainy days on average.
Is September a good time to visit Athens?
September is warm and mostly dry. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Athens in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full September packing list for Athens for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.