Weather in September
Temperature
September signals a slight drop in average high-temperature, sliding from August's 28°C (82.4°F) to a still moderately hot 25°C (77°F). Supetar experiences a nighttime temperature average of 16°C (60.8°F) during September.Rainfall
In Supetar, in September, it is raining for 10 days, with typically 68mm (2.68") of accumulated precipitation. In Supetar, during the entire year, the rain falls for 139 days and collects up to 937mm (36.89") of precipitation.Sea temperature
In Supetar, the average seawater temperature in September is 23.9°C (75°F).Note: The allure of a swim in 23.9°C (75°F) waters can be influenced by your feelings towards the cold, today's sunshine, the wind's touch, and the ambient warmth. To put it in perspective, Olympic standards demand water temperatures of 25°C (77°F) to 28°C (82.4°F).
Daylight
In Supetar, the average length of the day in September is 12h and 30min.On the first day of September in Supetar, 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
In September, the average sunshine is 8h.UV index
In Supetar, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be on guard! The reflective nature of sand and water boosts UV exposure.
Frequently asked questions
What are September temperatures in Supetar?
How many days does it rain in September in Supetar?
What is the water temperature in September in Supetar?
How many hours of daylight does Supetar have in September?
What time are sunrise and sunset in September in Supetar?
How many hours of sunshine does Supetar have in September?
What is the UV index intensity in September in Supetar?
Average temperature in September
Supetar, Croatia
- Average high temperature in September: 25°C
The warmest month (with the highest average high temperature) is July (29°C).
The month with the lowest average high temperature is January (9°C).
- Average low temperature in September: 16°C
The months with the highest average low temperature are July and August (19°C).
The coldest month (with the lowest average low temperature) is January (3°C).
Average rainfall in September
Supetar, Croatia
- Average rainfall in September: 68mm
The wettest month (with the highest rainfall) is November (120mm).
The driest month (with the least rainfall) is July (38mm).
Average rainfall days in September
Supetar, Croatia
- Average rainfall days in September: 10 days
The months with the highest number of rainy days are January, April, November and December (13 days).
The months with the least rainy days are July and August (9 days).
Average sea temperature in September
Supetar, Croatia
- Average sea temperature in September: 23.9°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 and February (13.9°C).
Average daylight in September /
Average sunshine in September
Supetar, Croatia
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- 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
Supetar, 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).
Supetar, Croatia
Weather forecast for your location
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