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
September
Weather in September
Temperature
The commencement of September involves a temperature shift, with the average high-temperature dropping from a warm 25.1°C (77.2°F) in August to an enjoyable 19.5°C (67.1°F). In September, Rošnja experiences an average nighttime temperature of 10.1°C (50.2°F).Humidity
In September, the average relative humidity is 81%.Rainfall
In September, the rain falls for 14.5 days. Throughout September, 77mm (3.03") of precipitation is accumulated. Throughout the year, there are 188.4 rainfall days, and 935mm (36.81") of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Rošnja, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 06:17 and sunset at 19:35. On the last day of September, in Rošnja, sunrise is at 06:54 and sunset at 18:38 CEST.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Prioritize safety - Recommendations to avert sunburn are shared. It's recommended to limit sun exposure when its radiation is at its peak during midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Rošnja, Slovenia
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is August (25.1°C).
The month with the lowest average high temperature is January (2.5°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-3.1°C).
Average pressure in September
Rošnja, Slovenia
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The months with the lowest atmospheric pressure are May and June (1015.1mbar).
Average wind speed in September
Rošnja, Slovenia
- Average wind speed in September: 6.5km/h
The windiest month (with the highest average wind speed) is March (9km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in September
Rošnja, Slovenia
- Average humidity in September: 81%
The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Rošnja, Slovenia
- Average rainfall in September: 77mm
The wettest month (with the highest rainfall) is May (139mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in September
Rošnja, Slovenia
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is May (24 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in September
Rošnja, Slovenia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (210mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Rošnja, Slovenia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12 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
Rošnja, Slovenia
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in September
Rošnja, Slovenia
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is May (4.2 days).
Average UV index in September
Rošnja, Slovenia
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Rošnja, Slovenia
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Rošnja, Slovenia
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July and August (9km).
The month with the lowest visibility is January (7km).
