September weather forecastOnek, Slovenia
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Onek, Slovenia, with an average temperature fluctuating between 20.4°C (68.7°F) and 9.4°C (48.9°F).Temperature
With the beginning of September, the average high-temperature shows a decrease, transitioning from a warm 26.3°C (79.3°F) in August to an agreeable 20.4°C (68.7°F). Throughout September nights, Onek registers an average low-temperature of 9.4°C (48.9°F).Humidity
In Onek, the average relative humidity in September is 80%.Rainfall
In September, in Onek, the rain falls for 13.5 days. Throughout September, 73mm (2.87") of precipitation is accumulated. In Onek, during the entire year, the rain falls for 159.4 days and collects up to 758mm (29.84") of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Onek, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 06:22 and sunset at 19:38. On the last day of the month, sunrise is at 06:57 and sunset at 18:42 CEST.
Sunshine
The average sunshine in September is 8.9h.UV index
In Onek, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Onek, Slovenia
- Average high temperature in September: 20.4°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in September: 9.4°C
The months with the highest average low temperature are July and August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).
Average pressure in September
Onek, Slovenia
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The months with the lowest atmospheric pressure are May and June (1014.8mbar).
Average wind speed in September
Onek, Slovenia
- Average wind speed in September: 5.8km/h
The windiest month (with the highest average wind speed) is March (8.2km/h).
The calmest month (with the lowest average wind speed) is August (5.6km/h).
Average humidity in September
Onek, Slovenia
- Average humidity in September: 80%
The months with the highest relative humidity are January and November (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Onek, Slovenia
- Average rainfall in September: 73mm
The wettest month (with the highest rainfall) is May (106mm).
The driest month (with the least rainfall) is January (42mm).
Average rainfall days in September
Onek, Slovenia
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is February (9.7 days).
Average snowfall in September
Onek, Slovenia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (154mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Onek, Slovenia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Onek, Slovenia
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Onek, Slovenia
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (8.3 days).
Average UV index in September
Onek, Slovenia
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Onek, Slovenia
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Onek, 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 January, February, October and November (7km).
