September weather forecast
Stari Grad, Croatia

September

Weather in September

September, the first month of the autumn in Stari Grad, is still a warm month, with an average temperature fluctuating between 25°C (77°F) and 16°C (60.8°F).

Temperature

As September arrives, Stari Grad's weather displays a minor decrease in high-temperatures, transitioning from August's moderately hot 28°C (82.4°F) to a still warm 25°C (77°F). Throughout September, Stari Grad records an average temperature of 16°C (60.8°F) at night.

Rainfall

In Stari Grad, Croatia, during September, the rain falls for 9 days and regularly aggregates up to 67mm (2.64") of precipitation. Throughout the year, there are 134 rainfall days, and 904mm (35.59") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature is 23°C (73.4°F).
Note: Imagine a swim in 23°C (73.4°F) waters. How you'd feel depends on your cold sensitivity, the sun's rays, the caress of the wind, and the warmth enveloping you. Comparatively, Olympic swimmers train in waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

In September, the average length of the day is 12h and 30min.
On the first day of September, sunrise is at 06:18 and sunset at 19:28. On the last day of the month, sunrise is at 06:50 and sunset at 18:36 CEST.

Sunshine

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 health risk from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 5 in September transforms into the following instructions:
Guard yourself - Avoiding sunburn is suggested. When the Sun is at its strongest around midday, find shade and limit exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Attention! The reflection of both water and sand can increase the intensity of UV rays.

Frequently asked questions

What is the average September temperature in Stari Grad?
The average high-temperature and low-temperature in Stari Grad, Croatia, during September are 25°C (77°F) and 16°C (60.8°F) respectively.
How much does it rain in Stari Grad in September?
In Stari Grad, Croatia, in September, it is raining for 9 days, with typically 67mm (2.64") of accumulated precipitation.
What is the sea temperature in September in Stari Grad?
In Stari Grad, in September, the average water temperature is 23°C (73.4°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23°C (73.4°F) water.
What is the average length of the day in September in Stari Grad?
The average day length in September is 12h and 30min.
What time are sunrise and sunset in September in Stari Grad?
In September, on the first day of the month, sunrise is at 06:18 and sunset at 19:28. On the last day of the month, in Stari Grad, sunrise is at 06:50 and sunset at 18:36 CEST.
How long on average sun shines in September in Stari Grad?
In September, the average sunshine duration in Stari Grad, Croatia, is 8h.
What is the UV index reading in September in Stari Grad?
In Stari Grad, Croatia, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average UV index
Average temperature in September - Stari Grad, Croatia
Average temperature in September
Stari Grad, Croatia
  • Average high temperature in September: 25°C

The warmest months (with the highest average high temperature) are July and August (28°C).
The month with the lowest average high temperature is January (9°C).

  • Average low temperature in September: 16°C

The month with the highest average low temperature is July (19°C).
The coldest month (with the lowest average low temperature) is January (3°C).

Average rainfall in September - Stari Grad, Croatia
Average rainfall in September
Stari Grad, Croatia
  • Average rainfall in September: 67mm

The wettest month (with the highest rainfall) is December (116mm).
The driest month (with the least rainfall) is July (36mm).

Average rainfall days in September - Stari Grad, Croatia
Average rainfall days in September
Stari Grad, Croatia
  • Average rainfall days in September: 9 days

The months with the highest number of rainy days are January, November and December (13 days).
The month with the least rainy days is July (8 days).

Average sea temperature in September - Stari Grad, Croatia
Average sea temperature in September
Stari Grad, Croatia
  • Average sea temperature in September: 23°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, February, March and April (14°C).

Average daylight in September / Average sunshine in September - Stari Grad, Croatia
Average daylight in September /
Average sunshine in September
Stari Grad, Croatia
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 8h

The month with the most sunshine is July (Average sunshine: 11h).
The months with the least sunshine are January, November and December (Average sunshine: 4h).

Average UV index in September - Stari Grad, Croatia
Average UV index in September
Stari Grad, Croatia
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 1).

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