Sea Temperature in Onia in September

© Tobias K****

Complete information on the sea temperature range in the Aegean Sea in Onia in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Onia. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Onia Climate and Swimming Opportunities in September

Onia lies within the Kos in Greece. The average daytime temperature in Onia in September is 27°C (80°F), while the nighttime average is 20°C (68°F). There are typically two rainy days during the month, with a total precipitation of 16 mm (0.6 inches). The daylight duration in September in Onia is 12 hours, with an average of 11 hours of sunshine per day. The average wind speed in September is 15 km/h (9 mph), and the humidity level is around 57%.

The water temperature in Onia in September ranges from 24°C to 26°C (75°F to 79°F). At the beginning of the month, the average temperature is around 25°C (77°F), shifting to 25°C (77°F) by mid-September and reaching 25°C (77°F) in the last ten days. Overall, the average sea temperature in Onia for September is 25°C (77°F). Perfect swimming weather — warm water and hot air make for an enjoyable and relaxing experience.

Frequently Asked Questions About Water Temperatures in September in Onia