Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September comes with a decrease in the average high-temperature, falling from a moderately hot 23.5°C (74.3°F) in August to a refreshing 18.2°C (64.8°F). During September, Cerkno's temperature averages to a chilly 8.5°C (47.3°F) at night.Humidity
In September, the average relative humidity in Cerkno, Slovenia, is 82%.Rainfall
In Cerkno, in September, during 13.7 rainfall days, 78mm (3.07") of precipitation is typically accumulated. Throughout the year, there are 165.5 rainfall days, and 1310mm (51.57") of precipitation is accumulated.Snowfall
In Cerkno, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:25 and sunset at 19:42. On the last day of September, in Cerkno, sunrise is at 07:01 and sunset at 18:45 CEST.
Sunshine
In September, the average sunshine in Cerkno, Slovenia, is 9.5h.UV index
In Cerkno, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What are the temperatures in Cerkno in September?
What is the average humidity in September in Cerkno?
How many days does it rain in September in Cerkno?
When it does not snow in Cerkno?
Does it snow in Cerkno in September?
How many hours of daylight does Cerkno have in September?
When are sunrise and sunset in September in Cerkno?
How long on average sun shines in September in Cerkno?
What is the UV index intensity in September in Cerkno?
Average temperature in September
Cerkno, Slovenia
- Average high temperature in September: 18.2°C
The warmest month (with the highest average high temperature) is August (23.5°C).
The month with the lowest average high temperature is January (1.5°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is August (12.2°C).
The coldest months (with the lowest average low temperature) are January and February (-4.3°C).
Average pressure in September
Cerkno, Slovenia
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The month with the lowest atmospheric pressure is May (1015.1mbar).
Average wind speed in September
Cerkno, Slovenia
- Average wind speed in September: 6.5km/h
The windiest month (with the highest average wind speed) is February (7.5km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).
Average humidity in September
Cerkno, Slovenia
- Average humidity in September: 82%
The month with the highest relative humidity is November (88%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall in September
Cerkno, Slovenia
- Average rainfall in September: 78mm
The wettest month (with the highest rainfall) is November (197mm).
The driest month (with the least rainfall) is January (69mm).
Average rainfall days in September
Cerkno, Slovenia
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (22.4 days).
The month with the least rainy days is December (8.5 days).
Average snowfall in September
Cerkno, Slovenia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (856mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Cerkno, Slovenia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (16.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cerkno, Slovenia
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is November (Average sunshine: 4h and 36min).
Average sunshine days in September
Cerkno, Slovenia
- Average sunshine days in September: 14 days
The month with the most sunshine days is August (16.4 days).
The month with the least sunshine days is May (6.4 days).
Average UV index in September
Cerkno, Slovenia
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Cerkno, Slovenia
- Average cloud cover in September: 38
The month with the most cloud cover is November (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Cerkno, Slovenia
- Average visibility in September: 8km
The months with the highest visibility are April, June, July and August (9km).
The months with the lowest visibility are February and November (7km).
Cerkno, Slovenia
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