September weather forecastZadar, Croatia
September
Weather in September
September brings the start of Autumn to Zadar but still carries over some elements of the city's summer climate. The weather subsides from August's heat, exhibiting a noticeable decline in daily temperature averages, but it still remains comfortably warm. Predictably, the onset of fall ushers in more rainfall, amounting to 63mm (2.48"). Daylight hours continue to decrease yet provide ample daylight for sightseeing and other outdoor activities. Despite the seasonal change, sea temperatures maintain their warmth from summer, providing suitable conditions for water-based activities.Temperature
The transition to September results in a modest reduction in average high-temperature, moving from 28.3°C (82.9°F) in August to a still warm 23.5°C (74.3°F). An average temperature of 17.9°C (64.2°F) is recorded in Zadar during the nights in September.Humidity
The average relative humidity in September is 64%.Rainfall
In Zadar, Croatia, in September, during 10.6 rainfall days, 63mm (2.48") of precipitation is typically accumulated. In Zadar, during the entire year, the rain falls for 143.1 days and collects up to 707mm (27.83") of precipitation.Snowfall
January, March through December are months without snowfall in Zadar.Sea temperature
In September, the average sea temperature is 23.8°C (74.8°F).Note: While a person's sensitivity to cold is personal, factors like sunshine, wind, and the temperature can influence their comfort in 23.8°C (74.8°F) waters. Olympians, for perspective, swim in waters between 25°C (77°F) and 28°C (82.4°F).
Daylight
In Zadar, the average length of the day in September is 12h and 31min.On the first day of September in Zadar, sunrise is at 06:22 and sunset at 19:35. On the last day of the month, sunrise is at 06:56 and sunset at 18:41 CEST.
Sunshine
The average sunshine in September in Zadar, Croatia, is 10.6h.UV index
In Zadar, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 5 during September translates into these guidelines:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Beware! Reflecting off water and sand, UV rays are much stronger.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Zadar, Croatia
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (9.2°C).
- Average low temperature in September: 17.9°C
The month with the highest average low temperature is August (21.7°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).
Average pressure in September
Zadar, Croatia
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is July (1013.7mbar).
Average wind speed in September
Zadar, Croatia
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is February (18.9km/h).
The calmest month (with the lowest average wind speed) is July (11.9km/h).
Average humidity in September
Zadar, Croatia
- Average humidity in September: 64%
The month with the highest relative humidity is November (74%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
Zadar, Croatia
- Average rainfall in September: 63mm
The wettest month (with the highest rainfall) is November (115mm).
The driest month (with the least rainfall) is August (28mm).
Average rainfall days in September
Zadar, Croatia
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is November (15.3 days).
The month with the least rainy days is August (7.9 days).
Average snowfall in September
Zadar, Croatia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (2mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Zadar, Croatia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Zadar, Croatia
- Average sea temperature in September: 23.8°C
The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (12.4°C).
Average daylight in September /
Average sunshine in September
Zadar, Croatia
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 10h and 36min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 5h and 42min).
Average sunshine days in September
Zadar, Croatia
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is August (20.8 days).
The month with the least sunshine days is November (13.4 days).
Average UV index in September
Zadar, Croatia
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Zadar, Croatia
- Average cloud cover in September: 20
The months with the most cloud cover are January and February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Zadar, Croatia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





