September weather forecastKosti, Bulgaria
September
Weather in September
September, the first month of the autumn in Kosti, is also a moderately hot month, with temperature in the range of an average low of 16.7°C (62.1°F) and an average high of 23.3°C (73.9°F).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's warm 26.7°C (80.1°F) to a still moderately hot 23.3°C (73.9°F). During the September nights, an average temperature of 16.7°C (62.1°F) is observed in Kosti.Humidity
August and September, with an average relative humidity of 70%, are the least humid months.Rainfall
In Kosti, in September, during 10.6 rainfall days, 31mm (1.22") of precipitation is typically accumulated. Throughout the year, there are 143.6 rainfall days, and 486mm (19.13") of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Kosti is 12h and 29min.On the first day of the month, sunrise is at 06:34 and sunset at 19:42. On the last day of September, sunrise is at 07:05 and sunset at 18:52 EEST.
Sunshine
In Kosti, the average sunshine in September is 9.9h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 during September translates into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kosti, Bulgaria
- Average high temperature in September: 23.3°C
The warmest month (with the highest average high temperature) is August (26.7°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 16.7°C
The month with the highest average low temperature is August (20°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in September
Kosti, Bulgaria
- Average pressure in September: 1015.8mbar
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
Kosti, Bulgaria
- Average wind speed in September: 14.3km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is June (11.4km/h).
Average humidity in September
Kosti, Bulgaria
- Average humidity in September: 70%
The months with the highest relative humidity are January and February (81%).
The months with the lowest relative humidity are August and September (70%).
Average rainfall in September
Kosti, Bulgaria
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is October (55mm).
The driest month (with the least rainfall) is August (15mm).
Average rainfall days in September
Kosti, Bulgaria
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is August (6.5 days).
Average snowfall in September
Kosti, Bulgaria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (39mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Kosti, Bulgaria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5 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
Kosti, 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: 9h and 54min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 4h and 24min).
Average sunshine days in September
Kosti, Bulgaria
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is August (21.1 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in September
Kosti, Bulgaria
- Average UV index in September: 5
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 and December (UV index 2).
Average cloud cover in September
Kosti, Bulgaria
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Kosti, Bulgaria
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
