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
Transition into September marks a drop in the average high-temperature, moving from a moderately hot 26.3°C (79.3°F) in August to an agreeable 20.2°C (68.4°F). An average low-temperature of 9.4°C (48.9°F) is observed during September nights.Humidity
In September, the average relative humidity in Trebnje is 81%.Rainfall
In Trebnje, during September, the rain falls for 13.6 days and regularly aggregates up to 67mm (2.64") of precipitation. In Trebnje, during the entire year, the rain falls for 159.5 days and collects up to 752mm (29.61") of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:21 and sunset at 19:38. On the last day of September, in Trebnje, sunrise is at 06:57 and sunset at 18:41 CEST.
Sunshine
In Trebnje, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Take precautions - Protection against sunburn is recommended. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
What is the temperature in September in Trebnje?
What is the average humidity in September in Trebnje?
How much does it rain in Trebnje in September?
When it does not snow in Trebnje?
Does it snow in Trebnje in September?
How many hours of daylight does Trebnje have in September?
When are sunrise and sunset in September in Trebnje?
How many hours of sunshine does Trebnje have in September?
What is the UV index intensity in September in Trebnje?
Average temperature in September
Trebnje, Slovenia
- Average high temperature in September: 20.2°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
Trebnje, Slovenia
- Average pressure in September: 1017.5mbar
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
Trebnje, Slovenia
- Average wind speed in September: 5.9km/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
Trebnje, Slovenia
- Average humidity in September: 81%
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
Trebnje, Slovenia
- Average rainfall in September: 67mm
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
Trebnje, Slovenia
- Average rainfall days in September: 13.6 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
Trebnje, 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
Trebnje, 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
Trebnje, 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 0min
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
Trebnje, Slovenia
- Average sunshine days in September: 14.1 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
Trebnje, Slovenia
- Average UV index in September: 3
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
Trebnje, Slovenia
- Average cloud cover in September: 37
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
Trebnje, 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).
Trebnje, Slovenia
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