Attica weather in September
September is one of the best months to visit Attica: highs of 28°C (82°F) and about 29 mm (1.1 in) of rain on average. Nights average 20°C (67°F) and cloud cover 24% (NASA POWER, 2001–2025 averages). The sea averages 26°C (80°F). It is the 5th driest month of the year and the 4th warmest. Compared with August, it is cooler and wetter; October brings highs of 23°C (73°F) and 49 mm (1.9 in) of rain.
Figures are long-term averages for Athens, the largest city in Attica. See below for other places.
Is September a good time to visit Attica?
best month Weather score 90/100.
Yes. September is one of the best months for weather in Attica.
Does it rain a lot in Attica in September?
No, it is usually dry: about 29 mm (1.1 in) falls in an average September. It is the 5th driest month of the year.
How warm is Attica in September?
Days average 28°C (82°F) and nights 20°C (67°F).
Attica weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 12°C (54°F) | 6°C (44°F) | 66 mm | 57% | 17°C (62°F) | least pleasant |
| February | 13°C (55°F) | 7°C (44°F) | 58 mm | 56% | 16°C (60°F) | least pleasant |
| March | 15°C (60°F) | 8°C (47°F) | 53 mm | 50% | 16°C (61°F) | fair |
| April | 19°C (66°F) | 11°C (51°F) | 30 mm | 45% | 18°C (64°F) | best |
| May | 25°C (76°F) | 15°C (59°F) | 21 mm | 37% | 20°C (67°F) | best |
| June | 30°C (86°F) | 20°C (68°F) | 20 mm | 21% | 24°C (76°F) | best |
| July | 32°C (90°F) | 23°C (73°F) | 11 mm | 11% | 27°C (80°F) | best |
| August | 32°C (90°F) | 23°C (73°F) | 8 mm | 10% | 27°C (81°F) | best |
| September | 28°C (82°F) | 20°C (67°F) | 29 mm | 24% | 26°C (80°F) | best |
| October | 23°C (73°F) | 16°C (60°F) | 49 mm | 38% | 24°C (75°F) | best |
| November | 18°C (64°F) | 12°C (53°F) | 69 mm | 50% | 21°C (71°F) | fair |
| December | 14°C (56°F) | 8°C (47°F) | 86 mm | 58% | 18°C (65°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months
Weather across Attica in September
Weather can differ a lot within Attica: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Athens | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Piraeus | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Peristéri | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Kallithéa | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Acharnés | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Níkaia | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Glyfáda | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Ílion | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Ilioúpoli | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Keratsíni | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Khalándrion | 28°C (82°F) | 20°C (67°F) | 29 mm | best |
| Néa Smýrni | 28°C (82°F) | 20°C (67°F) | 29 mm | best |