September weather forecastGradsko, Bulgaria
September
Weather in September
September, the first month of the autumn in Gradsko, is still a warm month, with an average temperature ranging between min 13.6°C (56.5°F) and max 24.6°C (76.3°F).Temperature
The arrival of September indicates a decrease in the average high-temperature, moving from a warm 29.9°C (85.8°F) in August to a still moderately hot 24.6°C (76.3°F). During the month of September, an average temperature of 13.6°C (56.5°F) is noted during the nights.Humidity
The average relative humidity in September is 59%.Rainfall
In Gradsko, during September, the rain falls for 9.2 days and regularly aggregates up to 22mm (0.87") of precipitation. Throughout the year, there are 140.5 rainfall days, and 455mm (17.91") of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Gradsko, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 06:40 and sunset at 19:50. On the last day of the month, sunrise is at 07:12 and sunset at 18:58 EEST.
Sunshine
In September, the average sunshine is 10.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gradsko, Bulgaria
- Average high temperature in September: 24.6°C
The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (4.2°C).
- Average low temperature in September: 13.6°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is January (-2.5°C).
Average pressure in September
Gradsko, Bulgaria
- Average pressure in September: 1016.2mbar
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
Gradsko, Bulgaria
- Average wind speed in September: 9km/h
The windiest months (with the highest average wind speed) are February and March (10.6km/h).
The calmest month (with the lowest average wind speed) is October (8.7km/h).
Average humidity in September
Gradsko, 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 (54%).
Average rainfall in September
Gradsko, Bulgaria
- Average rainfall in September: 22mm
The wettest month (with the highest rainfall) is June (73mm).
The driest month (with the least rainfall) is August (21mm).
Average rainfall days in September
Gradsko, Bulgaria
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is August (8 days).
Average snowfall in September
Gradsko, Bulgaria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (95mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Gradsko, Bulgaria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 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
Gradsko, Bulgaria
- Average daylight in September: 12h and 30min
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 18min
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 12min).
Average sunshine days in September
Gradsko, Bulgaria
- Average sunshine days in September: 19.7 days
The month with the most sunshine days is August (21.1 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Gradsko, 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 and December (UV index 2).
Average cloud cover in September
Gradsko, 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
Gradsko, 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).
