September weather forecastOmiš, Croatia
September
Weather in September
Sea temperature
In September, the average sea temperature in Omiš, Croatia, is 23.9°C (75°F).Note: Individual preferences to cold, influenced by conditions such as sunshine, wind, and surrounding temperature, play a part in the comfort of swimming in 23.9°C (75°F) waters. (As an aside, Olympic swimming standards dictate water temperatures from 25°C (77°F) to 28°C (82.4°F).)
Daylight
In Omiš, the average length of the day in September is 12h and 30min.On the first day of September in Omiš, sunrise is at 06:17 and sunset at 19:28. On the last day of the month, sunrise is at 06:50 and sunset at 18:36 CEST.
Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In September, the average sea temperature in Omiš is 23.9°C (75°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 23.9°C (75°F).
The average day length in September is 12h and 30min.
In September, on the first day of the month, sunrise is at 06:17 and sunset at 19:28. On the last day of the month, sunrise is at 06:50 and sunset at 18:36 CEST.
Average sea temperature in September
Omiš, Croatia
- Average sea temperature in September: 23.9°C
The best month for swimming (with the highest average sea temperature) is August (25°C).
The coldest months (with the lowest average sea temperature) are January and February (13.9°C).
Average daylight in September
Omiš, Croatia
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).





