September weather forecastOpaka, Bulgaria
September
Weather in September
The first month of the autumn, September, is still a warm month in Opaka, Bulgaria, with temperature in the range of an average low of 13.7°C (56.7°F) and an average high of 24.1°C (75.4°F).Temperature
September's onset brings a slight change in high-temperatures, falling from 29.5°C (85.1°F) in August to a still warm 24.1°C (75.4°F). Opaka experiences a nighttime temperature average of 13.7°C (56.7°F) during September.Humidity
In September, the average relative humidity in Opaka is 58%.Rainfall
In Opaka, in September, it is raining for 8.4 days, with typically 21mm (0.83") of accumulated precipitation. Throughout the year, there are 127.1 rainfall days, and 463mm (18.23") of precipitation is accumulated.Snowfall
In Opaka, snow does not fall in May through September.Daylight
In September, the average length of the day in Opaka is 12h and 30min.On the first day of the month, sunrise is at 06:39 and sunset at 19:50. On the last day of September, sunrise is at 07:12 and sunset at 18:58 EEST.
Sunshine
In Opaka, Bulgaria, the average sunshine in September is 9.9h.UV index
In Opaka, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Opaka, Bulgaria
- Average high temperature in September: 24.1°C
The warmest month (with the highest average high temperature) is August (29.5°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 13.7°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is January (-3.5°C).
Average pressure in September
Opaka, Bulgaria
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The month with the lowest atmospheric pressure is July (1012.8mbar).
Average wind speed in September
Opaka, Bulgaria
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is March (14.3km/h).
The calmest month (with the lowest average wind speed) is July (10.8km/h).
Average humidity in September
Opaka, Bulgaria
- Average humidity in September: 58%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (54%).
Average rainfall in September
Opaka, Bulgaria
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is August (19mm).
Average rainfall days in September
Opaka, Bulgaria
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is May (16.7 days).
The months with the least rainy days are January and August (7 days).
Average snowfall in September
Opaka, Bulgaria
- Average snowfall in September: 0mm
The months with the highest snowfall are January and December (116mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Opaka, Bulgaria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.8 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
Opaka, Bulgaria
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 54min
The month with the most sunshine is August (Average sunshine: 11h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in September
Opaka, Bulgaria
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Opaka, 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, November and December (UV index 2).
Average cloud cover in September
Opaka, Bulgaria
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Opaka, Bulgaria
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September and October (10km).
The month with the lowest visibility is January (8km).
