September signals a subtle change in the weather as
Chalcis begins its transition from the heat of summer towards the cool of autumn. The city starts to mellow, the summer crowds dissolve, and there’s a tranquil beauty in the air. However, the sea remains warm at 24.8°C (76.6°F), an alluring prospect for late-season swimmers. The daylight hours start to decrease, but Autumn is still far off with
October promising a more noticeable shift in seasonal weather.
Temperature
Chalcis's September weather features a light decline in high-temperatures, reducing from a tropical 32.3°C (90.1°F) in
August to a warm 28.9°C (84°F). Chalcis experiences an average low-temperature of 19.2°C (66.6°F) in month of September.
Sea temperature
In September, the average sea temperature is 24.8°C (76.6°F).
Note: The cold tolerance of an individual, along with sunshine, wind, and the temperature of the environment, affects the enjoyment of swimming in 24.8°C (76.6°F) waters. (Olympic swimmers participate in waters ranging from 25°C (77°F) to 28°C (82.4°F).)
Daylight
In September, the average length of the day in Chalcis is 12h and 26min.
On the first day of September in Chalcis,
Greece, sunrise is at 06:55 and sunset at 19:55. On the last day of the month, sunrise is at 07:20 and sunset at 19:09 EEST.