Weather in September
The fall breezes hint at their arrival in Izola, Slovenia as September sea temperatures drop to 23.3°C (73.9°F). The weather tends to nudge towards cooling after the constant August heat, giving residents a reprieve. As daylight hours shrink, the sun-soaked city begins a slow transition, wrapping up the vibrant hues of summer and revealing more sober autumn shades.
Note: 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 23.3°C (73.9°F).
On the first day of September, sunrise is at 06:27 and sunset at 19:43. On the last day of the month, sunrise is at 07:02 and sunset at 18:47 CEST.
[Resources]Sea temperature
In Izola, the average seawater temperature in September is 23.3°C (73.9°F).Note: 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 23.3°C (73.9°F).
Daylight
The average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 06:27 and sunset at 19:43. On the last day of the month, sunrise is at 07:02 and sunset at 18:47 CEST.
Frequently asked questions
How warm is the water in September in Izola?
In Izola, the average seawater temperature in September is 23.3°C (73.9°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 23.3°C (73.9°F).
What is the average length of the day in September in Izola?
In Izola, the average day length in September is 12h and 32min.
When is the sunrise / sunset in September in Izola?
In September, on the first day of the month, sunrise is at 06:27 and sunset at 19:43. On the last day of the month, sunrise is at 07:02 and sunset at 18:47 CEST.
Average sea temperature in September
Izola, Slovenia
- Average sea temperature in September: 23.3°C
The best months for swimming (with the highest average sea temperature) are July and August (24.8°C).
The coldest month (with the lowest average sea temperature) is February (9.3°C).
Average daylight in September
Izola, Slovenia
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
Izola, Slovenia
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