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
The arrival of September corresponds with a shift in temperature, down from a moderately hot 27.6°C (81.7°F) in August to a pleasant 22.4°C (72.3°F). A marked difference from the daytime temperatures, Kostandovo's nighttime temperature falls to an average low of 9.9°C (49.8°F) in September.Humidity
The average relative humidity in September in Kostandovo is 63%.Rainfall
In September, in Kostandovo, Bulgaria, the rain falls for 10.5 days. Throughout September, 28mm (1.1") of precipitation is accumulated. Throughout the year, there are 148.7 rainfall days, and 459mm (18.07") of precipitation is accumulated.Snowfall
In Kostandovo, snow does not fall in May through October.Daylight
The average length of the day in September in Kostandovo, Bulgaria, is 12h and 29min.On the first day of September, sunrise is at 06:49 and sunset at 19:57. On the last day of the month, sunrise is at 07:19 and sunset at 19:06 EEST.
Sunshine
The average sunshine in September is 9.8h.UV index
The average daily maximum UV index in September in Kostandovo is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Kostandovo in September?
What is the average humidity in September in Kostandovo?
How many days does it rain in September in Kostandovo?
When it does not snow in Kostandovo?
What is the average length of the day in September in Kostandovo?
When is the sunrise / sunset in September in Kostandovo?
How long on average sun shines in September in Kostandovo?
What is the UV index reading in September in Kostandovo?
Average temperature in September
Kostandovo, Bulgaria
- Average high temperature in September: 22.4°C
The warmest month (with the highest average high temperature) is August (27.6°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is January (-4°C).
Average pressure in September
Kostandovo, Bulgaria
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is December (1020.4mbar).
The month with the lowest atmospheric pressure is July (1013.4mbar).
Average wind speed in September
Kostandovo, Bulgaria
- Average wind speed in September: 6.1km/h
The windiest month (with the highest average wind speed) is March (7.7km/h).
The calmest month (with the lowest average wind speed) is August (5.7km/h).
Average humidity in September
Kostandovo, Bulgaria
- Average humidity in September: 63%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Kostandovo, Bulgaria
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is June (61mm).
The driest month (with the least rainfall) is August (24mm).
Average rainfall days in September
Kostandovo, Bulgaria
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (7.2 days).
Average snowfall in September
Kostandovo, Bulgaria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (117mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Kostandovo, Bulgaria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Kostandovo, Bulgaria
- Average daylight in September: 12h and 3min
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 5min
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 42min).
Average sunshine days in September
Kostandovo, Bulgaria
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is May (8.2 days).
Average UV index in September
Kostandovo, Bulgaria
- Average UV index in September: 4
The months with the highest UV index are 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
Kostandovo, Bulgaria
- Average cloud cover in September: 24
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Kostandovo, Bulgaria
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January and February (8km).
