September weather forecast
Primošten, Croatia

The first month of the autumn, September, is also a moderately hot month in Primošten, Croatia, with temperature in the range of an average low of 15°C (59°F) and an average high of 25°C (77°F).

Temperature

The onset of September brings a small shift in high-temperatures, falling from a warm 29°C (84.2°F) in August to a still moderately hot 25°C (77°F). Throughout September nights, Primošten registers an average low-temperature of 15°C (59°F).

Rainfall

In September, in Primošten, the rain falls for 10 days. Throughout September, 73mm (2.87") of precipitation is accumulated. In Primošten, during the entire year, the rain falls for 142 days and collects up to 873mm (34.37") of precipitation.

Sea temperature

In Primošten, in September, the average water temperature is 23.8°C (74.8°F).
Note: For those with a heightened sensitivity to cold, sunshine, wind, and outside temperature make a big difference in enjoying a swim at 23.8°C (74.8°F). (Olympic swimming regulations state a water temperature of 25°C (77°F) to 28°C (82.4°F).)

Daylight

In September, the average length of the day is 12h and 30min.
On the first day of the month, sunrise is at 06:20 and sunset at 19:31. On the last day of September, sunrise is at 06:53 and sunset at 18:39 CEST.

Sunshine

In Primošten, Croatia, the average sunshine in September is 8h.

UV index

In Primošten, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 5 during September, leads to the following recommendations:
Act with care - The need to guard against sun damage is communicated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.