September weather forecast
Ostrovica, Croatia

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Ostrovica, Croatia, with an average temperature fluctuating between 17.7°C (63.9°F) and 23.9°C (75°F).

Temperature

The onset of September coincides with a reduction in the average high-temperature, falling from 29.1°C (84.4°F) in August to a still warm 23.9°C (75°F). An average temperature of 17.7°C (63.9°F) marks the nights in Ostrovica in September.

Humidity

In September, the average relative humidity in Ostrovica is 63%.

Rainfall

In Ostrovica, during September, the rain falls for 9.3 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, in Ostrovica, there are 138.3 rainfall days, and 671mm (26.42") of precipitation is accumulated.

Snowfall

In Ostrovica, Croatia, snow does not fall in April through December.

Daylight

The average length of the day in September is 12h and 31min.
On the first day of September in Ostrovica, sunrise is at 06:20 and sunset at 19:32. On the last day of the month, sunrise is at 06:53 and sunset at 18:39 CEST.

Sunshine

The average sunshine in September is 10.7h.

UV index

The average daily maximum UV index in September in Ostrovica is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Experience reduced UV exposure by about half when donning a wide-brim hat.

Frequently asked questions

What are September temperatures in Ostrovica?
In Ostrovica, 23.9°C (75°F) is the average high-temperature and 17.7°C (63.9°F) is the average low-temperature during September. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is evaluated at 31°C (87.8°F).
What is the average humidity in September in Ostrovica?
In Ostrovica, the average relative humidity in September is 63%.
How many days does it rain in September in Ostrovica?
In Ostrovica, in September, during 9.3 rainfall days, 56mm (2.2") of precipitation is typically accumulated.
When it does not snow in Ostrovica?
April through December are months without snowfall in Ostrovica.
What is the average length of the day in September in Ostrovica?
In Ostrovica, Croatia, the average day length in September is 12h and 31min.
What time are sunrise and sunset in September in Ostrovica?
On the first day of September in Ostrovica, sunrise is at 06:20 and sunset at 19:32. On the last day of the month, sunrise is at 06:53 and sunset at 18:39 CEST.
How long on average sun shines in September in Ostrovica?
In Ostrovica, Croatia, the average sunshine duration in September is 10.7h.
What is the UV index intensity in September in Ostrovica?
The average daily maximum UV index in September in Ostrovica is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Ostrovica, Croatia
Average temperature in September
Ostrovica, Croatia
  • Average high temperature in September: 23.9°C

The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (9.2°C).

  • Average low temperature in September: 17.7°C

The month with the highest average low temperature is August (21.4°C).
The coldest month (with the lowest average low temperature) is January (4.5°C).

Average pressure in September - Ostrovica, Croatia
Average pressure in September
Ostrovica, Croatia
  • Average pressure in September: 1016.1mbar

The month with the highest atmospheric pressure is December (1019.1mbar).
The month with the lowest atmospheric pressure is July (1013.7mbar).

Average wind speed in September - Ostrovica, Croatia
Average wind speed in September
Ostrovica, Croatia
  • Average wind speed in September: 12.7km/h

The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is August (11.4km/h).

Average humidity in September - Ostrovica, Croatia
Average humidity in September
Ostrovica, Croatia
  • Average humidity in September: 63%

The month with the highest relative humidity is November (74%).
The month with the lowest relative humidity is August (58%).

Average rainfall in September - Ostrovica, Croatia
Average rainfall in September
Ostrovica, Croatia
  • Average rainfall in September: 56mm

The wettest month (with the highest rainfall) is November (112mm).
The driest month (with the least rainfall) is August (18mm).

Average rainfall days in September - Ostrovica, Croatia
Average rainfall days in September
Ostrovica, Croatia
  • Average rainfall days in September: 9.3 days

The month with the highest number of rainy days is November (14.4 days).
The month with the least rainy days is August (5.9 days).

Average snowfall in September - Ostrovica, Croatia
Average snowfall in September
Ostrovica, Croatia
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (4mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September - Ostrovica, Croatia
Average snowfall days in September
Ostrovica, Croatia
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Ostrovica, Croatia
Average daylight in September /
Average sunshine in September
Ostrovica, 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: 10h and 4min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).

Average sunshine days in September - Ostrovica, Croatia
Average sunshine days in September
Ostrovica, Croatia
  • Average sunshine days in September: 18.5 days

The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is February (13.3 days).

Average UV index in September - Ostrovica, Croatia
Average UV index in September
Ostrovica, 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 December (UV index 2).

Average cloud cover in September - Ostrovica, Croatia
Average cloud cover in September
Ostrovica, Croatia
  • Average cloud cover in September: 18

The months with the most cloud cover are January and February (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 10).

Average visibility in September - Ostrovica, Croatia
Average visibility in September
Ostrovica, 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).

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