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
With September's onset, the weather reveals a slight temperature decrease, transitioning from 29.8°C (85.6°F) in August to a still moderately hot 24.9°C (76.8°F). Nighttime temperatures hover around an average low of 12.9°C (55.2°F) in September.Humidity
In Ustren, the average relative humidity in September is 59%.Rainfall
In Ustren, in September, during 9.8 rainfall days, 27mm (1.06") of precipitation is typically accumulated. Throughout the year, there are 133.4 rainfall days, and 458mm (18.03") of precipitation is accumulated.Snowfall
In Ustren, snow does not fall in May through September.Daylight
In Ustren, Bulgaria, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 06:45 and sunset at 19:52. On the last day of September, in Ustren, sunrise is at 07:15 and sunset at 19:02 EEST.
Sunshine
In September, the average sunshine is 10h.UV index
In September, the average daily maximum UV index in Ustren is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Guard yourself - Precautionary measures against sun damage are advocated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Ustren?
Does it snow in September?
How many hours of daylight does Ustren have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Ustren, Bulgaria
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (5.1°C).
- Average low temperature in September: 12.9°C
The month with the highest average low temperature is August (16.4°C).
The coldest month (with the lowest average low temperature) is January (-1.8°C).
Average pressure in September
Ustren, Bulgaria
- Average pressure in September: 1015.9mbar
The month with the highest atmospheric pressure is December (1019.9mbar).
The month with the lowest atmospheric pressure is July (1012.5mbar).
Average wind speed in September
Ustren, Bulgaria
- Average wind speed in September: 8.7km/h
The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is October (7.6km/h).
Average humidity in September
Ustren, Bulgaria
- Average humidity in September: 59%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Ustren, Bulgaria
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is August (18mm).
Average rainfall days in September
Ustren, Bulgaria
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is June (18.2 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in September
Ustren, Bulgaria
- Average snowfall in September: 0mm
The month with the highest snowfall is December (81mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Ustren, Bulgaria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.4 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
Ustren, Bulgaria
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Ustren, Bulgaria
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is August (20.6 days).
The month with the least sunshine days is June (8.6 days).
Average UV index in September
Ustren, Bulgaria
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Ustren, Bulgaria
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Ustren, Bulgaria
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).
