October weather forecastKoper, Slovenia
October
Weather in October
Koper in October feels the sturdy grip of autumn as the temperature continues to fall. The sea temperature drops to a cooler 19°C (66.2°F), indicating a shift from the summer's warmth. As daylight hours reduce further, the city shows its readiness to welcome the colder months. Despite these changes, Koper retains its charm, painted in hues of autumn and adorned with a crisp cool air.Sea temperature
In Koper, the average seawater temperature in October is 19°C (66.2°F).Note: For the majority, swimming in water with a temperature of 19°C (66.2°F) is not enjoyable. The difficulty in managing breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in October in Koper, Slovenia, is 10h and 56min.On the first day of October in Koper, sunrise is at 07:03 and sunset at 18:45 CEST. On the last day of the month, sunrise is at 06:43 and sunset at 16:53 CET.
Note: On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. Daylight Saving Time starts again on Sunday, 30. March 2025, at 02:00; consequently, the time zone reverts from CET to 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 Koper, Slovenia, in October, the average water temperature is 19°C (66.2°F). For swimming, a surface water temperature of 19°C (66.2°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
In October, the average day length in Koper, Slovenia, is 10h and 56min.
In October, on the first day of the month, sunrise is at 07:03 and sunset at 18:45 CEST. On the last day of the month, in Koper, sunrise is at 06:43 and sunset at 16:53 CET.
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Koper, and the time zone changes from CEST to CET. The next DST starts on Sunday, 30. March 2025, at 02:00.
Average sea temperature in October
Koper, Slovenia
- Average sea temperature in October: 19°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 October
Koper, Slovenia
- Average daylight in October: 10h and 54min
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).





