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
Weather in September
Temperature
As August shifts into September, a slight alteration in temperatures is observed, with average highs reducing from a hot 32°C (89.6°F) to a moderately hot 26.6°C (79.9°F). During September, an average low-temperature of 14.7°C (58.5°F) is observed.Humidity
The average relative humidity in September in Opan is 55%.Rainfall
In September, the rain falls for 7.4 days. Throughout September, 21mm (0.83") of precipitation is accumulated. Throughout the year, in Opan, there are 115.6 rainfall days, and 378mm (14.88") of precipitation is accumulated.Snowfall
In Opan, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September in Opan, sunrise is at 06:43 and sunset at 19:51. On the last day of the month, sunrise is at 07:13 and sunset at 19:00 EEST.
Sunshine
In Opan, the average sunshine in September is 10h.UV index
In Opan, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 5 in September suggests the following recommendations:
Be vigilant - Preventing sunburn is recommended. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What is the average September temperature in Opan?
What is the average humidity in September in Opan?
How much does it rain in Opan in September?
When it does not snow in Opan?
What is the average length of the day in September in Opan?
When are sunrise and sunset in September in Opan?
How long on average sun shines in September in Opan?
How high is the UV index in September in Opan?
Average temperature in September
Opan, Bulgaria
- Average high temperature in September: 26.6°C
The warmest month (with the highest average high temperature) is August (32°C).
The month with the lowest average high temperature is January (5.9°C).
- Average low temperature in September: 14.7°C
The month with the highest average low temperature is August (18.1°C).
The coldest month (with the lowest average low temperature) is January (-1.4°C).
Average pressure in September
Opan, Bulgaria
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is December (1020.1mbar).
The month with the lowest atmospheric pressure is July (1012.7mbar).
Average wind speed in September
Opan, Bulgaria
- Average wind speed in September: 8.2km/h
The windiest month (with the highest average wind speed) is March (9.4km/h).
The calmest month (with the lowest average wind speed) is October (7.4km/h).
Average humidity in September
Opan, Bulgaria
- Average humidity in September: 55%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Opan, Bulgaria
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is June (47mm).
The driest month (with the least rainfall) is August (13mm).
Average rainfall days in September
Opan, Bulgaria
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is June (14.3 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in September
Opan, 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, September and October (0mm).
Average snowfall days in September
Opan, Bulgaria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.1 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
Opan, 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: 10h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in September
Opan, Bulgaria
- Average sunshine days in September: 20.8 days
The month with the most sunshine days is August (23.6 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in September
Opan, 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
Opan, Bulgaria
- Average cloud cover in September: 24
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Opan, Bulgaria
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January and February (8km).
Opan, Bulgaria
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