September weather forecastKostur, Bulgaria
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Kostur, Bulgaria, with an average temperature fluctuating between 26.4°C (79.5°F) and 14.8°C (58.6°F).Temperature
As September begins, there is a decrease in the average high-temperature, falling from a tropical 31.8°C (89.2°F) in August to a moderately hot 26.4°C (79.5°F). Throughout the month of September, Kostur witnesses an average low-temperature of 14.8°C (58.6°F).Humidity
In Kostur, Bulgaria, the average relative humidity in September is 57%.Rainfall
In Kostur, during September, the rain falls for 7.8 days and regularly aggregates up to 28mm (1.1") of precipitation. Throughout the year, there are 111.8 rainfall days, and 370mm (14.57") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 06:40 and sunset at 19:48. On the last day of September, in Kostur, sunrise is at 07:11 and sunset at 18:58 EEST.
Sunshine
In Kostur, the average sunshine in September is 10.1h.UV index
In Kostur, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kostur, Bulgaria
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is August (31.8°C).
The month with the lowest average high temperature is January (6.1°C).
- Average low temperature in September: 14.8°C
The month with the highest average low temperature is August (18°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).
Average pressure in September
Kostur, Bulgaria
- Average pressure in September: 1015.7mbar
The month with the highest atmospheric pressure is December (1019.8mbar).
The month with the lowest atmospheric pressure is July (1012.3mbar).
Average wind speed in September
Kostur, Bulgaria
- Average wind speed in September: 10.3km/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 June (9.4km/h).
Average humidity in September
Kostur, Bulgaria
- Average humidity in September: 57%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (51%).
Average rainfall in September
Kostur, Bulgaria
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is June (47mm).
The driest month (with the least rainfall) is August (17mm).
Average rainfall days in September
Kostur, Bulgaria
- Average rainfall days in September: 7.8 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is August (5.8 days).
Average snowfall in September
Kostur, Bulgaria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (55mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Kostur, Bulgaria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Kostur, Bulgaria
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 6min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Kostur, Bulgaria
- Average sunshine days in September: 21.3 days
The month with the most sunshine days is August (24.1 days).
The month with the least sunshine days is June (15.9 days).
Average UV index in September
Kostur, Bulgaria
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Kostur, Bulgaria
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Kostur, 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).
