The climate in Zákynthos during September can be summarized as hot and reasonably dry.
September is in the fall / autumn in Zákynthos and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (82°F), whilst at night 18°C (65°F) is normal.
| Daytime temperature | 27.8°C 82°F |
|---|---|
| Nightly temperature | 18.4°C 65.1°F |
| Average temperature | 23.1°C 73.6°F |
| Daily sunshine | 10.4 hrs |
| Avg rainfall | 35 mm 1.4 ins |
| Rainy days | 3 days |
| Sea temperature | 25.3°C 77.5°F |
| Humidity | 67% |
| Windspeed | 8.6kph 5 mph |
On average September is the 5th driest month of the year in Zákynthos with around 35mm 1.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.4 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Zákynthos in September 2025.
Best places to visit in September
| Hottest month: | August | 30.5°C 86.9°F |
|---|---|---|
| Driest month: | July | 6mm 0.2ins |
| Sunniest month: | July | 14.1hrs |
| Coldest month: | January | 14.2°C 57.6°F |
| Wettest month: | December | 188mm 7.4ins |