Northwest Croatia weather in September 2025
Northwest Croatia weather in September 2025
Day
24 °C
Night
15 °C
Sea
22 °C
Precipitation
114 mm
in month
Rainy days
9 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
70 %
Day
24 °C
Night
15 °C
Sea
22 °C
Precipitation
114 mm
in month
Rainy days
9 days
in month
Daylight
12 hours
average
Sunshine
7 hours
average
Humidity
70 %
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Weather overview and FAQs
Weather overview
In September in Northwest Croatia, the average air temperature ranges from 24 °C (75 °F) during the day to 15 °C (59 °F) at night. There are 9 days of rain on average, where the rainfall is 114 mm (4.48 in).
Is September a good month to visit Northwest Croatia?
There are good conditions for visiting in September in Northwest Croatia. There are only 9 days of rain in the whole month, so you can leave your umbrella at home. There are some people, who may feel a slight chill at 24 °C (75 °F), but others will feel perfectly fine. A sea temperature of 22 °C (71 °F) can seem colder to some, but others will call it refreshing. The temperature of 15 °C (59 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the sea temperature in Northwest Croatia in September?
The temperature of the sea in Northwest Croatia in September is 22 °C (71 °F). The sea at this temperature is quite cold, but it is already possible to stay in it for a long time and it is pleasantly refreshing on hot, steamy days.
What temperature can I expect during the day in Northwest Croatia in September?
In Northwest Croatia in September, the average daily temperatures will be 24 °C (75 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.
How many rainy days can I expect in September in Northwest Croatia?
There are 9 days, which are rainy in September in Northwest Croatia, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.2 days of the week, or in general - 31 % days.
How many sunny hours can I expect in September in Northwest Croatia?
In September in Northwest Croatia, you can expect around 7 hours of sunshine.
What is the rainfall intensity in September in Northwest Croatia?
In September in Northwest Croatia, there is 114 mm (4.48 in) rainfall, which means on average 4 mm (0.15 in) rainfall per day.
What is the air temperature in September in Northwest Croatia at night?
The average night temperature in Northwest Croatia in September is 15 °C (59 °F). This temperature is pleasant for a wide range of evening, night, and morning activities from sports to sitting outside in restaurants or evening walks.
How windy is Northwest Croatia in September?
In Northwest Croatia in September, there will be an average wind scale of 3. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.
Is the sea in Northwest Croatia warmer in September than in October?
Yes, in Northwest Croatia the sea is warmer in September than in October by 3 °C (37 °F).
What level of humidity is to expect in September in Northwest Croatia?
Humidity in Northwest Croatia in September is 70 %.
How does the sea temperature evolve during the month in September in Northwest Croatia?
Northwest Croatia has a decreasing trend of the sea temperature during September - from 23 °C (73 °F) in the first days of the month to 20 °C (69 °F) in the last days of the month.
How long is the day (from dawn till dusk) in Northwest Croatia in September?
The length of daylight in Northwest Croatia in September is 12 hours.
Is the weather in Northwest Croatia warmer in September than in August?
No, in Northwest Croatia in September the temperature is not higher than in August.
Is Northwest Croatia rainier in September than in October?
No, in September in Northwest Croatia it does not rain more than in October.
Is the temperature rising or falling in the course of time in September in Northwest Croatia?
During September in Northwest Croatia, the day temperatures are decreasing - from 26 °C (79 °F) at the beginning of the month to 21 °C (70 °F) at the end of the month.