September weather forecast
Korčula, Croatia

There's a slight dip in temperatures during September yet the city continues to experience warm days with temperatures topping an average high of 25°C (77°F). After months of intense heat, a cooler breeze sets in, giving a welcoming twist to the weather. A gentle increase in rainfall does not deter the outdoor activities, largely due to the amount of available daylight and sunshine hours. UV index falls to 5, indicating reduced heat intensity. The combination of warm temperatures and extended daylight hours upholds September as a favorable month for tourists.

Temperature

A subtle shift in Korčula's weather is observed as August turns into September, with the average high temperature reducing from 28°C (82.4°F) to a still warm 25°C (77°F). In the month of September, Korčula records a consistent average low-temperature of 15°C (59°F).

Rainfall

In Korčula, Croatia, in September, it is raining for 9 days, with typically 76mm (2.99") of accumulated precipitation. Throughout the year, in Korčula, there are 131 rainfall days, and 1036mm (40.79") of precipitation is accumulated.

Sea temperature

In Korčula, the average seawater temperature in September is 24.3°C (75.7°F).
Note: Factoring in a person's dislike for cold, combined with conditions like sunshine, wind, and temperature, a dip in 24.3°C (75.7°F) waters might be satisfying. (It is worth noting that the Olympic swimming waters are maintained between 25°C (77°F) and 28°C (82.4°F).)

Daylight

The average length of the day in September in Korčula is 12h and 29min.
On the first day of the month, sunrise is at 06:16 and sunset at 19:26. On the last day of September, sunrise is at 06:48 and sunset at 18:34 CEST.

Sunshine

In Korčula, the average sunshine in September is 8h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 5 in September translates into these instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.