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
Kosten's September weather features a mild decline in high-temperatures, reducing from 29.1°C (84.4°F) in August to a still moderately hot 23.7°C (74.7°F). Kosten observes an average nighttime temperature of 12.5°C (54.5°F) during September.Humidity
The average relative humidity in September is 63%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.1 days and typically collects 20mm (0.79") of precipitation.Snowfall
In Kosten, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September in Kosten, sunrise is at 06:37 and sunset at 19:46. On the last day of the month, sunrise is at 07:08 and sunset at 18:55 EEST.
Sunshine
The average sunshine in September is 10h.UV index
In Kosten, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the usual temperature for Kosten in September?
What is the average humidity in September in Kosten?
What is the driest month in Kosten?
How many days does it rain in September in Kosten?
When it does not snow in Kosten?
Does it snow in Kosten in September?
What is the average length of the day in September in Kosten?
When is the sunrise / sunset in September in Kosten?
How long on average sun shines in September in Kosten?
How high is the UV index in September in Kosten?
Average temperature in September
Kosten, Bulgaria
- Average high temperature in September: 23.7°C
The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in September: 12.5°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is January (-3°C).
Average pressure in September
Kosten, Bulgaria
- Average pressure in September: 1016.3mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The month with the lowest atmospheric pressure is July (1012.7mbar).
Average wind speed in September
Kosten, Bulgaria
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is February (11.9km/h).
The calmest month (with the lowest average wind speed) is July (9.3km/h).
Average humidity in September
Kosten, Bulgaria
- Average humidity in September: 63%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Kosten, Bulgaria
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is June (61mm).
The driest month (with the least rainfall) is September (20mm).
Average rainfall days in September
Kosten, Bulgaria
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is August (8.3 days).
Average snowfall in September
Kosten, Bulgaria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (61mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Kosten, Bulgaria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.2 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
Kosten, Bulgaria
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Kosten, Bulgaria
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is August (21.4 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Kosten, 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
Kosten, Bulgaria
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Kosten, Bulgaria
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (8km).
Kosten, Bulgaria
Weather forecast for your location
2. Allow the app to use your location
